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Tytuł:
The hoax of ocean acidification
Autorzy:
Ollier, Clifford
Powiązania:
https://bibliotekanauki.pl/articles/1051180.pdf
Data publikacji:
2019-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
ocean
acidification
coral
limestone
pH
Opis:
A widespread alarm is sweeping the world at present about the ill effects of man-made increases in carbon dioxide (CO2 ) production. One aspect is that it may cause the ocean to become acid, and dissolve the carbonate skeletons of many living things including shellfish and corals. However, the oceans are not acid, never have been in geological history, and cannot become acid in the future. Changes in atmospheric CO2 cannot produce an acid ocean. Marine life depends on CO2 , and some plants and animals fix it as limestone. Over geological time enormous amounts of CO2 have been sequestered by living things, and today there is far more CO2 in limestones than in the atmosphere or ocean. Carbon dioxide in seawater does not dissolve coral reefs, but is essential to their survival.
Źródło:
Quaestiones Geographicae; 2019, 38, 3; 59-66
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of in situ and satellite ocean color determinations of particulate organic carbon concentration in the global ocean
Autorzy:
Swirgon, M.
Stramska, M.
Powiązania:
https://bibliotekanauki.pl/articles/48631.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
ocean colour
particulate organic carbon
dissolved organic carbon
ocean ecosystem
chlorophyll concentration
phytoplankton biomass
Źródło:
Oceanologia; 2015, 57, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectral effects in bio-optical control on the ocean system
Autorzy:
Sathyendranath, S.
Platt, T.
Powiązania:
https://bibliotekanauki.pl/articles/47462.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
primary production
ocean colour
bio-optical property
remote sensing
ocean ecosystem
phytoplankton
Opis:
The influence of phytoplankton on the spectral structure of the submarine irradiance field is reviewed. The implications for the ocean system of the spectral response by phytoplankton to the ambient light field are discussed. For example, it provides the basis for retrieval of phytoplankton biomass by visible spectral radiometry (ocean-colour remote sensing). In the computation of primary production, the results of spectral models differ in a known and systematic manner from those of non-spectral ones. The bias can be corrected without risk of incurring additional random errors. The models in use for phytoplankton growth, whether based on available light or absorbed light, whether expressed in terms of chlorophyll or carbon, are shown all to conform to the same basic formalism with the same parameters. Residual uncertainty lies less with the models than with the parameters required for their implementation. The submarine light field and the spectral characteristics of phytoplankton carry latent information on phytoplankton community structure. Differences in spectral response by different functional types of phytoplankton are small but significant. Optical considerations limit the maximum phytoplankton biomass that can be sustained in a given surface mixed layer. Moreover, the upper bound on the biomass depends on the spectral response of the dominant phytoplankton taxa. As a result, an optical control exists in the mixed layer that tends to resist extreme excursions of the biomass and also to maintain biodiversity in the phytoplankton.
Źródło:
Oceanologia; 2007, 49, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global Ocean Governance
Autorzy:
Pyć, D.
Powiązania:
https://bibliotekanauki.pl/articles/116975.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Ocean Governance (GOG)
ocean
maritime policy
International Law of the Sea
Law of the Sea
Convention on the Law of the Sea (UNCLOS)
EU Legislation
Opis:
This paper presents a few general comments on the effective global ocean governance (GOG). The Convention on the Law of the Sea (UNCLOS) establishes fundamental legal principles for the governance of the marine environment and its resources. Furthermore, in the context of GOG the international community is conscious that improving of global and regional cooperation ought to be in the mainstream of socio-economic and political discourse. Nowadays, the UNCLOS is not able to give an answer for all new questions arising in the law of the sea. Therefore, it would seem that there is a great need to provide more pragmatic approaches to global ocean governance by international community as well as national governments, using the holistic paradigm of sustainable development. At the regional level, the European Union promotes an integrated maritime policy. Each EU marine Member State is obliged to prepare national integrated maritime policy as a part of the integrated maritime policy of EU. The Maritime Policy of Poland was approved by the Council of Ministers on 17 March 2015.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 1; 159-162
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Role of Operational Ocean Forecasting in E-Navigation
Autorzy:
Graff, J.
Powiązania:
https://bibliotekanauki.pl/articles/116784.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
e-Navigation
Operational Ocean Forecasting
Climate Changes
Tide Tables
Oceanography
Sea Level
Marine Electronic Highway (MEH)
Global Ocean Observing System (GOOS)
Opis:
Advances in ocean modelling have led to improved performance for operational ocean forecasting and the availability of continuously reliable forecast information for certain ocean regions of the world. Although such forecasts are being increasingly adopted into a wide range of services across the maritime industry they have not yet been considered as candidates to supplement or to substitute conventional tide tables for navigation use. The issue is important in the context of climate change and the added uncertainty now placed on the use of conventional tide table for navigation in complex coastal waters. In the context of e-navigation it is timely to begin to explore the issue and examine how such forecasts might be used and adopted. This requires closer connectivity between ocean forecasting and navigation communities and the involvement of overarching organisations such as IMO and I GOOS. This paper raises the issue and opens the debate.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 3; 259-262
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reflection of low-frequency long-range sound in the ocean
Autorzy:
Didenkulov, I.
Powiązania:
https://bibliotekanauki.pl/articles/332043.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
low frequency
long-range
sound
ocean
underwater
Opis:
Experimental results on energetic characteristics of low frequency (about 200 Hz) underwater channel sound reflection by ocean mountains and islands are presented. lt is investigated also sound penetration into shallow water. Transformation of vertical structure of sound field over continental slope is considered. Continental slope and shelf-wedge reflection coefficients of law frequency sound propagating in the underwater waveguide were measured. Results of the work show that low-frequency sound reflections from large-scale bottom irregularities can be important in ocean acoustics.
Źródło:
Hydroacoustics; 2003, 6; 117-124
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
History as an ocean
Autorzy:
Bemben, Alicja
Powiązania:
https://bibliotekanauki.pl/articles/626222.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Opis:
‘But there is a huge difference between writing a historical novel and writing history. If I may put it like this: history is like a river, and the historian is writing about the ways the river flows and the currents and crosscurrents in the river. But, within this river, there are also fish, and […] I am interested in the fish. The  novelist’s  approach  to  the  past,  through the eyes of characters, is substantially different from the approach of the historian’. This quotation might seem to have been taken from some pre-narrative-turn  text  whose  author  appears  to  profess the conviction that the scientific status of history and the fictional character of literature is what makes these two modes of writing about the past essentially different. In fact, these words come from Amitav Ghosh, a contemporary historian, social anthropologist, historical fiction writer who, more than forty years after the Linguistic Turn, seems to advocate a new version of ‘wie es eigentlich gewesen’ and literature opposition. Starting with Dipesh Chakrabarty’s arguments in favor of  ‘regional  and  global  configurations  in  modern  history’, I would like to use them to criticize Ghosh’s idea of history as a river and put forward a thesis that history is like an ocean and if we understand it as such, then the boundary between writing a historical novel and history might be considered conventional and possible to be blurred. In order to justify this thesis I intend to provide a series of arguments supported mainly by Hayden White’s philosophy of history presented in Metahistory and Hans-Georg Gadamer’s theory of understanding  from  Truth  and  Method.  In  conclusion,  I  point to  idiosyncrasies  of  the  ocean-like  perspective  on  history as a construct alternative to this proposed by Amitav Ghosh. 
Źródło:
Review of International American Studies; 2014, 7, 1
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surowce mineralne oceanów
World ocean mineral commodities
Autorzy:
Piestrzyński, A.
Powiązania:
https://bibliotekanauki.pl/articles/350664.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
surowce mineralne oceanów
klasyfikacja genetyczna
mineral commodities
ocean environment
genetic classification
Opis:
W pracy przestawiono charakterystykę surowcową złóż surowców mineralnych, w ujęciu genetycznym, występujących w morzach i oceanach. Wyróżniono osadowe złoża biogeniczne, chemiczne i mechaniczne oraz złoża hydrotermalne. Wskazano na miejsca występowania poszczególnych typów złóż i ich znaczenie ekonomiczne.
The work consists of a mineral deposits characteristics occurring in the World Ocean, based on genetic classification. The following type of the mineral deposits have been discussed: sedimentary biogenic, chemical, and placer as well as hydrothermal types. Localization and an economic importance of all deposits types listed in the text has also been presented.
Źródło:
Górnictwo i Geoinżynieria; 2011, 35, 4/1; 303-310
1732-6702
Pojawia się w:
Górnictwo i Geoinżynieria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamiczna ewolucja
Autorzy:
Ciastoń, Rafał.
Powiązania:
Polska Zbrojna 2020, nr 9, s. 84-85
Data publikacji:
2020
Tematy:
Przemysł zbrojeniowy
Marynarka wojenna
Polityka międzynarodowa
Artykuł z czasopisma wojskowego
Opis:
Artykuł omawia modernizacje marynarki wojennej Australii. Modernizacja związana jest z koniecznością dostosowania się do zmieniajacych realiów na Pacyfiku. Narzucone przez Chiny tempo inwestycji powoduje, że Australia musi modernizować posiadaną flotę oraz budować nowe jednostki. W artykule przedstawiono plany modernizacji.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
The integrated Arctic Ocean Observing System (iAOOS): an AOSB-CliC Observing Plan for the International Polar Year
Autorzy:
Dickson, B.
Powiązania:
https://bibliotekanauki.pl/articles/48790.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
climatic impact
International Polar Year
Arctic Ocean Observing System
Arctic Ocean
sea ice
climate change
Opis:
The debate on the climatic impact of Arctic change is currently focused on the fate of the perennial sea-ice and the climatic and social effects of its disappearance. Developments in our observing techniques mean that we are in prospect of being technically able to describe the ocean-atmosphere-cryosphere system of high northern latitudes operating as a complete system for the first time. Understanding this system and improving its predictability in models seems to be our most direct way of extending the ability of society to mitigate for or adapt to its changes, including global change. The integrated Arctic Ocean Observing System (iAOOS), described here, is a means of piecing together the available PIs, gear, ships and funding on the pan-Arctic scale that seems necessary to making the attempt, and the International Polar Year (2007–2009) provides the necessary stimulus for doing so.
Źródło:
Oceanologia; 2006, 48, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maritime Biodiversity from the French State’s Perspective
Autorzy:
Siekiera, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2014242.pdf
Data publikacji:
2020-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
biodiversity
maritime
ocean
France
French territories
climate change
ocean change
Opis:
“Together, protecting marine biodiversity: know how to act” was the French governmental conference organized by three ministries in Paris on 12 March 2020. Ministry of Higher Education, Research and Innovation, Ministry of Agriculture and Alimentation, and Ministry for the Ecological and Inclusive Transition along with two research think tanks, Ifremer and OFB have organized the “day of biodiversity”. Participants were mostly researchers, governmental and local officials, business leaders, fishermen, representatives of associations and foundations, all from France. Thus, the language of the conference was French. The conference took place in the 13th century Collège of Bernardins, a former Cistercian college of the historic University of Paris. Experts and audience shared reflections and discussions on major research issues on ocean change, as well as the French position towards global maritime policy in order to find proposals for sustainable management and protection of the ocean.
Źródło:
Polish Political Science Yearbook; 2020, 2 (49); 199-202
0208-7375
Pojawia się w:
Polish Political Science Yearbook
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytoplankton of the Olaf Prydz Bay (Indian Ocean, East Antarctica) in February 1969
Autorzy:
Ligowski, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2057634.pdf
Data publikacji:
1983
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
Indian Ocean
algae
phytoplankton
Źródło:
Polish Polar Research; 1983, 4, 1-4; 21-32
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocean average current measurement using acoustic phase monitoring
Autorzy:
Zieliński, A.
Zhou, L.
Butowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/331688.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
ocean-related activities
acoustic phase monitoring
hydroacoustic
Opis:
Knowledge of water currents is important in several ocean-related activities. Typically, current speed and direction are measured at a certain fixed location and depth (or depth profile) by a suitable current meter. In this paper, we propose a novel method for average current speed measurement along a path, based on acoustic phase monitoring. In this method, a transmitter and a receiver are installed at the ends of a designated path. A transmitted sinusoidal signal propagates along the path to the receiver. Intervening currents will introduce Doppler frequency shifts that can be measured as a rate of phase change in the received signal. The phase is recovered by means of a phase detector and unwrapping techniques. The desirable feature of the proposed method is that average current speed is monitored along the entire path. Moreover, the estimated frequency shift via the phase measurement achieves a higher accuracy in current measurement than does a measure of frequency directly by an FM demodulator.
Źródło:
Hydroacoustics; 2008, 11; 459-467
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Instrumenty strategii błękitnego oceanu
Blue ocean strategy tools
Autorzy:
Kuraś, P.
Powiązania:
https://bibliotekanauki.pl/articles/324372.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
strategia
zarządzanie strategiczne
strategia błękitnego oceanu
strategy
strategic management
blue ocean strategy
Opis:
Opracowanie poświęcono koncepcji strategii błękitnego oceanu autorstwa W. Chan Kim i Renée Mauborgne. Stanowi ona wynik kilkunastoletnich badań nad istotą posunięć strategicznych przedsiębiorstw. Oprócz niewątpliwie istotnego wkładu teoretycznego, koncepcja ta charakteryzuje się wysokim poziomem operacjonalizacji, co w sposób bezpośredni przełożyło się na ogromną i stale rosnącą jej popularność w środowisku menedżerskim. Jest to zasługa głównie spójnej koncepcji oraz łatwych do zrozumienia oraz do praktycznego zastosowania narzędzi, pozwalających na budowę skutecznej strategii rozwoju przedsiębiorstwa.
The paper is devoted to the concept of blue ocean strategy proposed by the researchers: W. Chan Kim and Renée Mauborgne. It was formulated as a result of several years of studies on the essence of strategic moves of enterprises. Alongside being the influential theory, the concept offered a high level of operationalization, which attracted a wide circle of practitioners of management. It is constituted by a coherent structure as well as easily comprehensible and practical instruments allowing for efficient building of potentially effective strategy.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2017, 113; 219-232
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of ocean current perturbations using acoustic phase variations
Autorzy:
Zieliński, A.
Butowski, M.
Kraeutner, P.
Powiązania:
https://bibliotekanauki.pl/articles/332840.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
ocean current perturbations
acoustics phase variations
hydroacoustics
Opis:
In this paper, we review an acoustic method for measuring both average ocean current speed and sound speed along an acoustic path. The method requires two or more stations on the sea floor, synchronized through a connecting underwater electric cable, that can transmit and receive an acoustic signal and The method is based on reciprocal acoustic transmissions to determine time of flight in both the forward and reverse directions. A specific implementation of this method is proposed. We also consider a novel method for monitoring ocean current perturbations through acoustic phase measurements. In simplest form, a continuous sinusoidal signal is transmitted from one station to a second station. Any variations in ocean current speed will introduce a phase shift in the received signal proportional to the time derivative of the current speed. This effect has been demonstrated through ultrasonic in-air experiments. Finally, the two methods are combined into a single system that continuously measures small-scale ocean current velocity changes.
Źródło:
Hydroacoustics; 2009, 12; 237-248
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current State of Deep Ocean Bathymetric Exploration
Autorzy:
Zwolak, K.
Felski, A.
Powiązania:
https://bibliotekanauki.pl/articles/320506.pdf
Data publikacji:
2017
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
bathymetry
ocean
multibeam echosounder
AUV
ASV
satellite altimetry
bathymetric map compilation
Opis:
The paper presents current state of bathymetric survey concerning deep ocean rather than shallow areas, which are better surveyed due to safety of navigation concerns. Rules and requirements of the new challenge, called the Shell Ocean Discovery XPRIZE, became a starting point for a discussion about the possibilities of mapping large areas of the ocean using up-to-date and new technology. The amount of bathymetric data available nowadays and the current state of ocean map compilations are also discussed in the paper as a motivation to inspire the new initiatives in the deep ocean.
W artykule przedstawiono obecny stan pomiarów batymetrycznych głębokowodnych obszarów oceanicznych. Zasady najnowszego konkursu Shell Ocean Discovery XPRIZE stały się punktem wyjścia do dyskusji o obecnych możliwościach pozyskiwania danych niezbędnych do tworzenia map oceanów w oparciu o aktualnie dostępne technologie. W artykule poruszono również zagadnienie ilości i cech danych batymetrycznych znajdujących się i udostępnianych w bazach danych gromadzących tego typu informacje.
Źródło:
Annual of Navigation; 2017, 24; 257-267
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ships’ ocean route programming
Programowanie tras statków na oceanach
Autorzy:
Wiśniewski, B.
Powiązania:
https://bibliotekanauki.pl/articles/359571.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
trasy oceaniczne statków
programowanie
metody
ship’s ocean routes
programming
methods
Opis:
The methodologies, planning procedures and integrated seas and ocean routes’ programming are presented. In programming of the most convenient route current and forecasted weather conditions, criteria and restrictions, speed and fuel characteristics of ships on waves and wind, computational methods and algo-rithms, navigation aids generating a route recommendation penetrate themselves. These elements when properly identified and adopted allow the master for effective ship’s course and speed decision making.
W artykule zaprezentowano metodologie i procedury planowania oraz zintegrowanego programowania tras statków na morzach i oceanach. W programowaniu najdogodniejszej trasy brane są pod uwagę takie czynniki, jak bieżące i prognozowane warunki pogodowe, kryteria i ograniczenia, charakterystyki prędkościowe i paliwowe statków na fali i wietrze, metody obliczeniowe i algorytmy, systemy wspomagania nawigacji, wypracowujące rekomendację trasy. Te elementy, poprawnie określone i przyjęte, pozwalają kapitanowi statku na efektywne podejmowanie decyzji co do kursów i prędkości statku.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 29 (101); 164-173
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ambient noise induced by large-amplitude internal waves in the ocean
Autorzy:
Serebryany, A.
Aredov, A.
Okhrimenko, N.
Powiązania:
https://bibliotekanauki.pl/articles/332834.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
noise
Indian Ocean
South China Sea
Opis:
Experimental data on the ambient noise generated by large-amplitude internal waves in the ocean are considered. The data are obtained by us during oceanic expeditions in the Indian Ocean and South China Sea. In both cases the generation of noise was caused by solitary internal waves with 50-m amplitudes. The internal waves were accompanied by strong orbital currents (up to 1.5 m/s) which created intense convergence with choppy surface waves at the sea surface. Simultaneous observations of internal waves and parameters of the ambient noise were carried out from a drifting vessel during calm weather. In both cases, the increase in the level of the ambient noise coincided with the passages of internal waves. The analysis of experimental data and the data of numerically modeling are presented.
Źródło:
Hydroacoustics; 2009, 12; 209-216
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the geometry of ocean surface waves
Autorzy:
Massel, S.R.
Powiązania:
https://bibliotekanauki.pl/articles/48766.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
air-sea interaction
atmosphere-ocean interaction
deep water
dynamic factor
geometry
irregular wave
marine environment
ocean surface
regular wave
shallow water
surface wave
water motion
wave breaking
wave slope
Opis:
The factors influencing the atmosphere-ocean transfer of mass and momentum, as well as incipient wave breaking and the amount of energy dissipated due to breaking, are discussed in detail. In particular, the influence of directional spreading on the statistics of surface wave slopes and the area of the wind- roughened ocean surface is demonstrated. Theoretical analysis and comparison with the available experimental data show that unimodal directional spreading is not able to reproduce the observed ratio of the cross-wind/up-wind mean square slopes. Better agreement is achieved when bimodal directional spreading, consisting of two wrapped-Gaussian distributions, is applied. The bimodal form suggested by Ewans (1998) is used in the paper. Moreover, the formulae developed here show that the increase in the area due to surface waves is rather small for both regular and irregular waves.
Źródło:
Oceanologia; 2011, 53, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of chlorophyll-a and diatoms in the frontal ecosystem of Indian Ocean sector of the Southern Ocean
Autorzy:
Rajani Kanta, Mishra
Babula, Jena
Pillai Anilkumar, Narayana
Ravidas Krishna, Naik
Venkateswaran Bhaskar, Parli
Soares, Melena A.
Powiązania:
https://bibliotekanauki.pl/articles/2042169.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
chlorophyll-a
diatoms
Southern Ocean
Źródło:
Polish Polar Research; 2017, 38, 3; 375-392
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Outlier detection in ocean wave measurements by using unsupervised data mining methods
Autorzy:
Mahmoodi, K.
Ghassemi, H.
Powiązania:
https://bibliotekanauki.pl/articles/260330.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ocean wave data
data mining
outlier detection
data correction
Opis:
Outliers are considerably inconsistent and exceptional objects in the data set that do not adapt to expected normal condition. An outlier in wave measurements may be due to experimental and configuration errors, technical defects in equipment, variability in the measurement conditions, rare or unknown conditions such as tsunami, windstorm and etc. To improve the accuracy and reliability of an built ocean wave model, or to extract important and valuable information from collected wave data, detecting of outlying observations in wave measurements is very important. In this study, three typical outlier detection algorithms:Box-plot (BP), Local Distance-based Outlier Factor (LDOF), and Local Outlier Factor (LOF) methods are used to detect outliers in significant wave height (Hs) records. The historical wave data are taken from National Data Buoy Center (NDBC). Finally, those data points are considered as outlier identified by at least two methods which are presented and discussed. Then, Hs prediction has been modelled with and without the presence of outliers by using Regression trees (RTs).
Źródło:
Polish Maritime Research; 2018, 1; 44-50
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indian Ocean wind speed variability and global teleconnection patterns
Autorzy:
Sinha, M.
Jha, S.
Chakraborty, P.
Powiązania:
https://bibliotekanauki.pl/articles/2079299.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
wind speed
variability
sea surface temperature
remote sensing
Indian Ocean
Opis:
The influence of the local sea surface temperature (SST) and remote ENSO (El Niño-Southern Oscillation) indices on the wind speed (WS) data were explored for the Indian Ocean region. Relationships among the parameters were studied using spatial correlation plots and significant correlation ranges. Two months (July and January) representing opposite monsoon phases were selected for analysis for the period 1950–2016. There was a significant negative correlation between WS and SST over the Bay of Bengal (BOB) during July. Although different ENSO indices correlated differently in different areas of the Indian Ocean, the region off the coast of Sri Lanka was most significantly teleconnected. The southwest monsoon locally impacted the WS and SST relationship and the WS parameter was remotely teleconnected in both the monsoon seasons. Further empirical orthogonal function (EOF) analysis was applied on the 67 years WS data of the BOB region to extract the dominant mode representing maximum variability of the total variance. The temporal pattern of the first principal component (PC1) of WS data was linked to the North Atlantic Oscillations in January and the Atlantic Multidecadal Oscillation in July respectively. The continuous wavelet power spectra of the PC1 of WS showed significant regions in the 2–4-year band resembling the ENSO variability. Wavelet coherence applied between PC1 of WS and the ENSO indices showed greatest values for January in the 8–16-year band and for July in the 0–4-year band. A close relationship was established between the WS variability in BOB and the ENSO indices.
Źródło:
Oceanologia; 2020, 62, 2; 126-138
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Response of Eastern Indian Ocean (ODP Site 762B) benthic foraminiferal assemblages to the closure of the Indonesian seaway
Autorzy:
Rai, A.K.
Singh, V.B.
Powiązania:
https://bibliotekanauki.pl/articles/48495.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Indian Ocean
benthic foraminifera
productivity
upwelling
oligotrophic water
surface water
Pliocene
atmospheric circulation
ocean circulation
thermohaline circulation
Źródło:
Oceanologia; 2012, 54, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Neoproterozoic-Paleozoic basement in the Alpidic Supragetic/Kučaj units of eastern Serbia: a continuation of the Rheic Ocean?
Autorzy:
Spahic, Darko
Gaudenyi, Tivadar
Glavaš-Trbič, Bojan
Powiązania:
https://bibliotekanauki.pl/articles/139069.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Supragetic ”Kučaj Unit”
Carpatho-Balkanides
Rheic Ocean/seaways
Rheic suture
Kučaj
Reik
Ocean Śródeuropejski
szew transeuropejski
Opis:
This paper attempts to allocate a segment of the Paleozoic Ocean situated in what is now Southeastern Europe (SEE) into a regional geological and paleotectonic synthesis connecting the sedimentary, metamorphic and igneous records associated with the ocean’s cycle. The Supragetic basement (external section of the Carpatho-Balkan arch) represents a tectonically reworked basement vestige of the Neoproterozoic–Lower Paleozoic oceanic floor system recrystallized under regional low temperature greenschist-facies conditions. The regional geological constraints associated with this low-grade basement are integrated with information from the overlying Silurian, Devonian and Lower Carboniferous cap-rocks of the “Kučaj Unit” to demonstrate the presence of a major Paleozoic ocean crossing this segment of SEE. In connection with the Lower Paleozoic north Gondwanan Pan African processes, the low-grade Supragetic basement (including its Devonian cover) is in a complex relationship with the occasionally anchimetamorphic Silurian, Devonian, and Lower Carboniferous deep-water record of the polymetamorphic “Kučaj Unit”. The Upper Devonian–Lower Carboniferous flysch and molasse of the “Kučaj Unit” are interposed with the Neoproterozic–Lower Paleozoic oceanic vestige or with the Supragetic basement with the corresponding Devonian Balkan-Carpathian back-arc ophiolite-bearing lithosphere and its carrier (Danubian Unit). This regional-scale synthesis demonstrates that a segment of the Rheic Ocean referred to as the Saxo-Thuringian seaway and its suture lay to the east, underneath the Permian red-bed overstepping sequence and to the west of the Danubian aggregation. Unlike many of the high-pressure rocks characterizing the segment of the Rheic suture in the Central European Variscides, the SEE zone described here has only a mild overprint.
Źródło:
Acta Geologica Polonica; 2019, 69, 4; 531-548
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nawożenie oceanów żelazem
Ocean Iron Fertilization (Summary)
Autorzy:
Marciniak, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/958066.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Wagę problemu oddaje liczba państw, które ratyfikowały Ramową konwencję Narodów Zjednoczonych w sprawie zmian klimatu (Nowy Jork 1992) – 194 państwa i Unia Europejska oraz Protokół z Kioto do Ramowej konwencji NZ w sprawie zmian klimatu z 1997 r. – 192 państwa oraz Unia Europejska. Drugim największym naturalnym pochłaniaczem emisji gazów cieplarnianych są oceany. Jednym ze sposobów redukcji atmosferycznych gazów cieplarnianych jest nawożenie oceanów żelazem. Polega ono na wprowadzeniu związków żelaza (ale także azotu lub fosforu) do wód oceanu, co ma stymulować gwałtowny wzrost fitoplanktonu. Ten z kolei ma pochłonąć dwutlenek węgla i – opadając na dno morskie – doprowadzić do jego zmagazynowania w oceanach. Artykuł poświęcony jest analizie prawnej nawożenia oceanów żelazem, które jednak budzi wątpliwości naukowe, środowiskowe oraz prawne. Autor artykułu wskazuje, że nawożenie żelazem nie ma długiej historii, a pełna jego ocena nie jest obecnie możliwa. Metoda może być dopuszczona jedynie jako projekt naukowy.
The oceans are the second largest natural absorber of carbon dioxide emissions. One of the methods contemplated to enhance the process is fertilization of seawater with iron. The fertilization stimulates the growth of phytoplankton, the main biological agent responsible for the carbon dioxide sequestration processes by seawater. As phytoplankton absorbs the gas it transports it toward the seabed, thus making the ocean a natural carbon sink. Significance of this issue is reflected by the number of parties to the Kyoto Protocol (1997) to the United Nations Framework Convention for the Climate Change (UNFCCC 1992). The signatories include 194 states and the European Union to the UNFCCC and 192 states and the European Union to the Kyoto Protocol. The Author provides legal analysis on ocean iron fertilization. The issue sparks considerable controversy from the standpoint of law, science and environmental protection. Since iron fertilization has been developed only recently, no thorough evaluation is possible. The Author advocates cautious approach and recommends limiting its use to scientific endeavors.
Źródło:
Prawo Morskie; 2011, XXVII; 205-228
0860-7338
Pojawia się w:
Prawo Morskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nawożenie oceanów żelazem
Ocean Iron Fertilization (Summary)
Autorzy:
Marciniak, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/958053.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Wagę problemu oddaje liczba państw, które ratyfikowały Ramową konwencję Narodów Zjednoczonych w sprawie zmian klimatu (Nowy Jork 1992) – 194 państwa i Unia Europejska oraz Protokół z Kioto do Ramowej konwencji NZ w sprawie zmian klimatu z 1997 r. – 192 państwa oraz Unia Europejska. Drugim największym naturalnym pochłaniaczem emisji gazów cieplarnianych są oceany. Jednym ze sposobów redukcji atmosferycznych gazów cieplarnianych jest nawożenie oceanów żelazem. Polega ono na wprowadzeniu związków żelaza (ale także azotu lub fosforu) do wód oceanu, co ma stymulować gwałtowny wzrost fitoplanktonu. Ten z kolei ma pochłonąć dwutlenek węgla i – opadając na dno morskie – doprowadzić do jego zmagazynowania w oceanach. Artykuł poświęcony jest analizie prawnej nawożenia oceanów żelazem, które jednak budzi wątpliwości naukowe, środowiskowe oraz prawne. Autor artykułu wskazuje, że nawożenie żelazem nie ma długiej historii, a pełna jego ocena nie jest obecnie możliwa. Metoda może być dopuszczona jedynie jako projekt naukowy.
The oceans are the second largest natural absorber of carbon dioxide emissions. One of the methods contemplated to enhance the process is fertilization of seawater with iron. The fertilization stimulates the growth of phytoplankton, the main biological agent responsible for the carbon dioxide sequestration processes by seawater. As phytoplankton absorbs the gas it transports it toward the seabed, thus making the ocean a natural carbon sink. Significance of this issue is reflected by the number of parties to the Kyoto Protocol (1997) to the United Nations Framework Convention for the Climate Change (UNFCCC 1992). The signatories include 194 states and the European Union to the UNFCCC and 192 states and the European Union to the Kyoto Protocol. The Author provides legal analysis on ocean iron fertilization. The issue sparks considerable controversy from the standpoint of law, science and environmental protection. Since iron fertilization has been developed only recently, no thorough evaluation is possible. The Author advocates cautious approach and recommends limiting its use to scientific endeavors.
Źródło:
Prawo Morskie; 2011, XXVII; 205-228
0860-7338
Pojawia się w:
Prawo Morskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geopolityka i geostrategia wybranych mocarstw w regionie Oceanu Indyjskiego i Zachodniego Pacyfiku
Autorzy:
Skrzyp, J.
Powiązania:
https://bibliotekanauki.pl/articles/120617.pdf
Data publikacji:
2013
Wydawca:
Akademia Sztuki Wojennej
Tematy:
Indian Ocean
West Pacific
global economy
security
Ocean Indyjski
Pacyfik
geopolityka
ochrona
Opis:
The Asian Development Bank forecasts that within 40 years Asia will catch up with Europe and North America which means that it will regain its dominating position in the global economy. Among many countries in this region China, which has already become world great power, deserves special attention. A dynamic progress is also the characteristic of India, a country which competes with China for the access to energy resources. Thus, a great race of those countries has commenced to have access to those resources as well as to secure the routes of their transport. Due to the above situation, the Indian Ocean and the West Pacific have gain special significance hence the Middle East and Africa are for the aforementioned countries a resource base. This, moreover, overlaps with strategic interests of the USA, Russia and other countries. As a result it is the beginning of a big game between China and India and the prize is the security of communication routes on the Indian Ocean and the West Pacific, where also the USA have their strategic interests. A big game between China, the USA, and Russia is also carried put in order to gain access to natural resources in Central Asia including the Caspian Sea and the Middle East. In the above situation, the ASEAN countries have become important being the passage area between the Indian Ocean and the Pacific. This is because of the Strait of Malacca which is located in this area and passed by 50 thousand ships yearly.
Źródło:
Zeszyty Naukowe AON; 2013, 1(90); 5-37
0867-2245
Pojawia się w:
Zeszyty Naukowe AON
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current State of Art of Satellite Altimetry
Autorzy:
Łyszkowicz, A.
Bernatowicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/320651.pdf
Data publikacji:
2017
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
satellite altimetry
radar altimeter
waveform retracker
ocean gravity field model
sea level
gravity anomalies
ocean tides
Opis:
One of the fundamental problems of modern geodesy is precise definition of the gravitational field and its changes in time. This is essential in positioning and navigation, geophysics, geodynamics, oceanography and other sciences related to the climate and Earth’s environment. One of the major sources of gravity data is satellite altimetry that provides gravity data with almost 75% surface of the Earth. Satellite altimetry also provides data to study local, regional and global geophysical processes, the geoid model in the areas of oceans and seas. This technique can be successfully used to study the ocean mean dynamic topography. The results of the investigations and possible products of altimetry will provide a good material for the GGOS (Global Geodetic Observing System) and institutions of IAS (International Altimetry Service). This paper presents the achievements in satellite altimetry in all the above disciplines obtained in the last years.
Jednym z podstawowych problemów współczesnej geodezji jest dokładne określenie pola grawitacyjnego i jego zmian w czasie. Ma to zasadnicze znaczenie dla zastosowań w pozycjonowaniu i nawigacji, w geofizyce, geodynamice, oceanografii i innych naukach związanych z klimatem i środowiskiem Ziemi. Jednym z głównych źródeł danych grawimetrycznych jest altimetria satelitarna, która dostarcza dane grawimetryczne z prawie 75% powierzchni globu ziemskiego. Altimetria satelitarna dostarcza również dane do badania lokalnych, regionalnych i globalnych procesów geofizycznych, modelu geoidy na obszarach mórz i oceanów oraz średniej dynamicznej topografii oceanów. Wyniki badań i potencjalne produkty danych altimetrycznych mają stanowić materiał dla Globalnego Geodezyjnego Systemu Obserwacji GGOS (Global Geodetic Observing System) i instytucji IAS (International Altimetry Service).
Źródło:
Annual of Navigation; 2017, 24; 31-47
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface waves in deep and shallow waters
Autorzy:
Massel, S.R.
Powiązania:
https://bibliotekanauki.pl/articles/48826.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
surface wave
deep
shallow water
dynamic factor
marine environment
atmosphere-ocean interaction
ocean form
air-sea interface
hydrodynamics
Opis:
The motion of water due to surface waves is the most dynamic factor observed in the marine environment. In this review various aspects of the wave modelling of non-linear, steep surface waves and their role in the atmosphere-ocean interaction are discussed. Significant improvements in wave forecasting have been made in the last ten years. This is to a large extent related to substantial progress in the description of wind forcing and other processes, as well as to the more efficient use of satellite observations and assimilation methods. One striking observation is the increasing variety and complexity of models in which more physical processes are implemented, greater precision and resolution achieved and extended ranges of applicability demonstrated. However, in order to evaluate the applicability of particular models, comparison with high quality experimental data, collected in nature or under laboratory conditions, is necessary.
Źródło:
Oceanologia; 2010, 52, 1; 5-52
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Projekcja siły Chińskiej Republiki Ludowej na Oceanie Indyjskim
China’s power projection in the Indian Ocean Region
Autorzy:
Gacek, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/505022.pdf
Data publikacji:
2016
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:
Chiny
Ocean Indyjski
projekcja siły
morskie szlaki komunikacyjne
bezpieczeństwo energetyczne
Nowy Jedwabny Szlak
China
Indian Ocean
power projection
sea lines of communication
energy security
New Silk Road
Opis:
Strategicznym imperatywem rosnącej aktywności Chin w regionie Oceanu Indyjskiego jest potrzeba ochrony interesów narodowych, związanych głównie z bezpieczeństwem ekonomicznym (zdobywaniem nowych możliwości biznesowych) oraz bezpieczeństwem energetycznym (zabezpieczeniem morskich szlaków transportowych). Utrwalenie obecności/pozycji Chin na wodach Oceanu Indyjskiego będzie sprzyjać zarówno przejmowaniu przez nie większej odpowiedzialności za sprawy bezpieczeństwa w regionie, jak i realizacji przedsięwzięć w ramach inicjatywy Morskiego Jedwabnego Szlaku XXI wieku.
China’s strategic imperative in the Indian Ocean region reflects its need for protection of national interests, mainly in the field of economic security (expanding business opportunities abroad) and energy security (sea lines of communication security). Long-term presence of China in the Indian Ocean region will not only increase its responsibility for security issues across the region but is also associated with the implementation of projects under the initiative of the 21st Century Maritime Silk Route Economic Belt.
Źródło:
Krakowskie Studia Międzynarodowe; 2016, 3; 127-141
1733-2680
2451-0610
Pojawia się w:
Krakowskie Studia Międzynarodowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial and temporal patterns of ocean variability using empirical orthogonal functions (EOF) in the Southern Java Waters
Autorzy:
Syamsuddin, Mega
Powiązania:
https://bibliotekanauki.pl/articles/1031454.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
El Niño Southern Oscillation
Empirical Orthogonal Function
Ocean variability
Opis:
The oceanographic parameters of Sea Surface Temperature (SST) from NOAA/AVHRR, Chlorophyll-a (Chl-a) from SeaWiFS and Modis/Aqua, Sea Surface Height Anomaly (SSHA) and eddy kinetic energy (EKE) from from TOPEX and Poseidon ERS-1/2 are used to understand the oceanographic variability in the Southern Java Waters. Analyses were done using empirical orthogonal function (EOF) and wavelet spectrum analysis in order to know spatial and temporal distributions related to the main forcing of the ocean climate variability for the period of January 1997 to December 2008 (12 years). The first EOF modes of Chl-a, SSHA and SST accounted for 42.8%, 36.5%, and 27.4% of total variance, corresponded with interannual signal for all the first modes, respectively. The spatial patterns of the first and second EOF modes of SSHA, SST and Chl-a gave a very typical cold water of SSHA, low SST and high Chl-a concentration located along the southern coast of Indonesian archipelago and warm water of SSHA, high SST and much less Chl-a concentration in the offshore region to make frontal areas along the latitudinal line around 10–12ºS. The results showed that total variance of the first two mode of SSHA, SST, and Chl-a explain 59.94%, 35.52%, and 55.26 %, respectively. These infer that SSHA and Chl-a give more response to the climate variability of El Niño Southern Oscillation (ENSO) forcing in the study area.
Źródło:
World Scientific News; 2020, 142; 76-87
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zdobywcy : jak Portugalczycy zdobyli Ocean Indyjski i stworzyli pierwsze globalne imperium
Jak Portugalczycy zdobyli Ocean Indyjski i stworzyli pierwsze globalne imperium
Conquerors : how Portugal seized the Indian Ocean and forged the first global empire, 2015.
Autorzy:
Crowley, Roger (1951- ).
Współwytwórcy:
Hornowski, Tomasz. Tłumaczenie
Dom Wydawniczy REBIS. Wydawca
Data publikacji:
2016
Wydawca:
Poznań : Dom Wydawniczy Rebis
Tematy:
Albuquerque, Alfonso de (ok. 1453-1515)
Gama, Vasco da (ok. 1460-1524)
Kolonializm
Odkrycia geograficzne
Wojna morska
Opracowanie
Opis:
Bibliografia, netografia na stronach 413-[418]. Indeks.
Dostawca treści:
Bibliografia CBW
Książka
Tytuł:
Tracing palaeocurrents from the Arctic Realm into the Tethys Ocean: the use of glendonite as an indicator for cold bottom water masses
Autorzy:
Merkel, Anna
Munnecke, Alex
Powiązania:
https://bibliotekanauki.pl/articles/24202087.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Tethys
ocean
water
Opis:
Today, the global conveyor belt of ocean currents is controlled by the configuration of continents and the climate. Conversely, ocean currents influence water and air temperatures as well as the amount of rainfall on a regional to local scale. In addition, they govern species distribution patterns, sedimentation patterns and the dispersal of nutrients in both oceans and epeiric seas. Therefore, the reconstruction of palaeocurrents is crucial for the understanding of ancient environments and the past climate. An important driver for the global ocean circulation is the formation of deep water. However, deep-water production is difficult to estimate, and its circulation is difficult to reconstruct, not only today but especially in the geological record. Palaeocurrent reconstructions are often based on the temporal and spatial distribution of marine species. In this presentation, a new approach is proposed which uses the occurrence of glendonites as a proxy for cool bottom currents. Glendonites are pseudomorphs after the hydrous carbonate mineral ikaite (CaCO3·6H2O) which only forms in environments characterised by near-freezing temperatures. Throughout the Phanerozoic, glendonites can be found in successions which were deposited in high latitudes. However, examples of glendonite occurrences in mid-latitudinal sections are also reported. One of these examples are upper Pliensbachian (Lower Jurassic) glendonites from a shallow-marine succession in South Germany which was located in the European epicontinental sea  – an area, where it was technically too warm to form the precursor mineral ikaite. Based on petrographical and sedimentological investigations as well as stable isotope analyses it is concluded that a low temperature was the main factor for ikaite formation in the studied section. To explain the low water temperatures, a model for a thermohaline circulation in the European epicontinental sea is proposed. The cool climate in the late Pliensbachian initiated the growth of sea ice in high latitudes, leading to the formation of cold and saline bottom waters analogous to the modern formation of North Atlantic Deep Water (NADW) and Antarctic Bottom Water (AABW). The cold bottom current flowed southward from the Arctic Realm through the Viking Corridor into the European Epicontinental Sea, thereby causing a massive cooling of the deeper parts of the epeiric sea, which led to the formation of ikaite in temperate areas. After passing the shelf, the bottom current entered the Western Tethys, probably forming a deep water mass. The proposed model can help to explain mid-latitudinal glendonite occurrences not only in the Pliensbachian, but also in other areas and time slices which are characterised by cooling. Moreover, it enables the use of the pseudomorph as a tracer for cold bottom currents which can be a helpful tool for the reconstruction of global ocean current patterns.
Źródło:
Geotourism / Geoturystyka; 2023, 1-2 (72-73); 49--49
1731-0830
Pojawia się w:
Geotourism / Geoturystyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of bio-optical parameters of open ocean waters
Autorzy:
Pelevin, V.N.
Rostovtseva, V.V.
Powiązania:
https://bibliotekanauki.pl/articles/48307.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
yellow substance
chlorophyll pigment
pigment
suspended matter
bio-optical modelling
ocean water
light absorption
Opis:
An original method for estimating the concentration of chlorophyll pigments, absorption of yellow substance and absorption of suspended matter without pigments and yellow substance in detritus using spectral diffuse attenuation coefficient for downwelling irradiance and irradiance reflectance data has been applied to sea waters of different types in the open ocean (case 1). Using the effective numerical single parameter classification with the water type optical index m as a parameter over the whole range of the open ocean waters, the calculations have been carried out and the light absorption spectra of sea waters tabulated. These spectra are used to optimize the absorption models and thus to estimate the concentrations of the main admixtures in sea water. The value of m can be determined from direct measurements of the downward irradiance attenuation coefficient at 500 nm or calculated from remote sensing data using the regressions given in the article. The sea water composition can then be readily estimated from the tables given for any open ocean area if that one parameter m characterizing the basin is known.
Źródło:
Oceanologia; 2001, 43, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Normative Powers in Maritime Affairs: India-Eu Cooperation in The Indian Ocean Region
Autorzy:
Łukaszuk, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1199592.pdf
Data publikacji:
2020
Wydawca:
Fundacja Copernicus na rzecz Rozwoju Badań Naukowych
Tematy:
Indian Ocean Region
maritime governance
integrated maritime policy
normative power
the European Union
India
Opis:
The aim of the article is to explore how the European Union (EU) and India have developed their activities in maritime affairs, trying to boost their cooperation. The challenge for both the EU and India has been to acknowledge each other’s role sin maritime affairs in the Indian Ocean Region (IOR) as a facilitator of good practices in maritime governance as well as an important ally in securing the Strategic Lanes of Communication. The main hypothesis of the article is that both the EU and India are normative powers in maritime affairs and have not yet created synergy in their activities. The growing feeling of disappointment among many countries in Asia and Europe with the Belt and Road Initiative might be used to introduce a joint EU-India program covering the same strategic intercontinental maritime lanes similar to the recent India-Japan initiative of the Asia-Africa Growth Corridor. The convergence of strategic interests of the EU and India can be materialized in the most democratic and beneficial way for both.
Źródło:
The Copernicus Journal of Political Studies; 2020, 1; 63-81
2299-4335
Pojawia się w:
The Copernicus Journal of Political Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recent dynamic ocean topography models and their comparison
Autorzy:
Marchenko, A.
Tretyak, K.
Lopyshansky, A.
Pavliv, T.
Powiązania:
https://bibliotekanauki.pl/articles/59880.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
ocean topography model
geodesy
oceanography
dynamic model
mean dynamic topography model
hydrological data
Opis:
Regarding the rapidly growing satellite altimetry database and corresponding products worldwide, an investigation of different mean dynamic ocean topography (MDT) models was assessed to be important for further use in geodetic applications. The efficiency and quality of different MDT models are discussed in view of adopted geoids as reference surfaces. The models used are: 1) The ECCO model based on hydrology and altimetry data, 2) The combined MDT Rio-05 constructed in CSL AVISO (2005) from data for the period 1993-1999, 3) The combined MDT CNES-CLS09 model at the grid points 15’x15’ based on altimetry and hydrology data for the period 1993-2007 (CSL AVISO, 2009), 4) The DNSC08MDT solution of mean dynamic topography (Danish National Space Center) obtained from the geometrical differences between the DNSC08 mean sea surface and the EGM2008 geoid model. The concluding results of the investigation are: 1) statistics of all mean dyamic topography models leads to the approximately same standard deviations about 70 cm and range from -2 m to 2 m; 2) all differences among various MDT models give much smaller standard deviations about 6 – 15 cm; 3) all such differences among various MDT give larger mean deviation, which can be explained by different geoid models or reference surfaces adopted for each solution; 4) better agreement provides MDT CNES-CLS09 and DNSC08MDT models. As a result, we prefer MDT CNES-CLS09 and DNSC08MDT solutions since their noise level corresponds to an estimated accuracy of modern satellite altimetry data.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2010, 11
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study on loops and eddies identified from the trajectories of drifters in the North Indian Ocean
Autorzy:
Dora, S.
Aparna, S.G.
Powiązania:
https://bibliotekanauki.pl/articles/2078762.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
trajectory
loop testing
eddy
geometric measurement
Indian Ocean
Opis:
We identify loops and eddies from the trajectories of the drifters in the North Indian Ocean (NIO) from October 1985 to March 2019. We use the geometric identification method to identify loops and eddies and compare them with the loops identified from loopers provided by Lumpkin (2016). In NIO, the number of loops estimated from loopers is less than the number of loops and eddies identified by the geometric identification method. A total of 761 loops are identified, of which 346 are eddies, whereas the loops identified from loopers are only 149. Larger radii loops and eddies are observed in the western and central Bay of Bengal (BoB) and the southwestern part of the Arabian Sea (AS). Temporal variation of loops and eddies shows a peak during April—May in the AS and September—October in the BoB. In the BoB, the temporal variation of cyclonic eddies matches with the variation in chlorophyll
Źródło:
Oceanologia; 2021, 63, 4; 516-530
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
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