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Wyświetlanie 1-10 z 595
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
Wyświetlanie 1-10 z 595

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