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Wyświetlanie 1-15 z 106
Tytuł:
Wykorzystanie UAV w nawigacji
The use of UAVs in navigation
Autorzy:
Świerczyński, Sławomir
Zwolan, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/315241.pdf
Data publikacji:
2019
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
UAV
drony
nawigacja
środowisko morskie
drones
navigation
sea environment
Opis:
Na przestrzeni ostatnich lat nastąpił bardzo dynamiczny rozwój bezzałogowych jednostek, które są wykorzystywane niemal w każdej dziedzinie życia. W artykule przedstawiono możliwości wykorzystania UAV w szeroko pojętej nawigacji, jak możemy korzystać z dronów w środowisku morskim, obserwować porty, prowadzić misje na morzu, jak robić mapy dna morskiego i jakie korzyści z dronów ma środowisko wojskowe.
Over the past years, there has been a very dynamic development of unmanned aerial vehicles that are used in almost every area of life. The article presents the possibilities of using UAVs in the broadly understood navigation, how to use drones in the sea environment, observe ports, conduct missions at sea, how to make seabed maps and how drones are used in the army.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2019, 20, 12; 210-214
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trophodynamic variations on microtidal North Mediterranean sandy beaches
Autorzy:
Vassallo, P.
Fabiano, M.
Powiązania:
https://bibliotekanauki.pl/articles/48051.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
Mediterranean Sea
benthic community
beach environment
sandy beach
ecosystem
trophodynamics
Opis:
Trophic models of the micro and meiobenthic community of six sandy beaches on the Ligurian coast (north-western Mediterranean Sea) have been performed to assess variations in structure and function of the ecosystem. A novel approach based on the determination of the feeding predisposition of the benthic community revealed that there is a significant shift in the trophodynamics of the system with respect to environmental constraints. Along an emerged-submerged gradient the benthic community displayed a clear trend from a fundamentally detritusdependent structure to an autotrophic, more balanced and diversified one. The trends analysed focus on the importance of the swash zone as a transitional area between the land and the sea that is characterised by a high diversity and activity of the trophic network.
Źródło:
Oceanologia; 2005, 47, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tourist economy on the Polish sea-coast in view of the ecological development policy
Autorzy:
Szwichtenberg, A.
Powiązania:
https://bibliotekanauki.pl/articles/84968.pdf
Data publikacji:
1997
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
tourism
economy
Polska
Baltic Sea
Polish coastal zone
ecological policy
development policy
alternative tourism
recreation
natural environment
tourist function
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 1997, 01
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tools for optimizing performance of VOYages at sea
Autorzy:
Johannessen, J. A.
Perrin, A.
Gaultier, L.
Herlédan, S.
Pouplin, C.
Collard, F.
Maze, J. P.
Dussauze, M.
Rapp, J.
Fanebust, R.
Andersen, S.
Franks, O.
Meyer, R.
Powiązania:
https://bibliotekanauki.pl/articles/1841544.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
voyage at sea
Copernicus Marine Environment Monitoring Service
optimization tool
synthetic aperture radar
finite-size lyapunov exponent
route optimization
sea surface temperature
route optimization algorithm
Opis:
The aim of the TOPVOYS project supported by the MarTERA ERA-Net Cofund program within the European Commission is to advance and implement analyses tools and decision support system for voyage optimisation. Based on marine weather analyses and forecasts combined with near real time satellite-based observations of wind, wave and surface current conditions as well as sea surface temperature fields the best shipping route are examined. The proposed approach aims to identify the optimum balance between minimisation of transit time and fuel consumption as well as reduction of emissions without placing the vessel at risk to damage and or crew injury. As such it is compliant with the International Maritime Organization guidelines [6] for ship routeing to keep the traffic smooth and avoid accidents, notably in the presence of unfavorable marine meteorological conditions. The tool performances will be demonstrated both in post-voyage analyses and real time operations for the North Atlantic Ocean crossings, voyages from Europe through the Mediterranean Sea and the Suez Channel to the Far East (e.g. China, South Korea) and voyages around Southern Africa.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 233-239
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 selection of an LNG terminal location by evaluating its potential impact on marine environments, safety, and costs
Autorzy:
Jurić, Majda
Dundović, Čedomir
Perić, Tina
Jelić-Mrčelić, Gorana
Powiązania:
https://bibliotekanauki.pl/articles/2175552.pdf
Data publikacji:
2021
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
LNG terminal
marine environment
PROMETHEE method
GIS
expert analysis survey
Adriatic Sea
Opis:
In this paper, a new multi-step approach for the selection of an LNG terminal location (for offshore terminal, onshore terminal, or floating storage regasification unit – FSRU) was presented based on the holistic evaluation of the impacts of the potential LNG terminal. The first step was to divide the entire observed area of the Adriatic Sea of the Republic of Croatia into smaller areas by using the geographic information system (GIS) and then selecting areas where the installation of an LNG terminal was technically feasible based on the pre-elimination criteria. Potential LNG terminal areas were selected by taking into account all pre-elimination criteria, and 14 areas were selected by using pre-elimination criteria in a GIS smart chart tool that enabled the analysis of spatial data. The second step involved analyzing the elimination criteria of the 14 areas selected in the first step by pre-elimination criteria analyses. Six potential LNG terminal micro-locations were selected based on the defined elimination criteria. In the third step, these six micro-locations were evaluated by experts by using 38 specific sub-criteria classified into five distinct groups: economic (11 sub-criteria), ecological (13 sub-criteria), safety (4 sub-criteria), traffic connection (6 sub-criteria), and gas needs (4 sub-criteria). The fourth step involved making a multi-criteria expert analysis of the six locations selected in the previous step (for onshore terminals, offshore terminals, and FSRU) for the analysis of three different scenarios by the PROMETHEE (Preference Ranking Organization METhod of Enrichment Evaluation) method. In every scenario, one group of sub-criteria was selected as the most important according to its cumulative relationship with the other groups of criteria (scenario 1 – economic group; scenario 2 – ecological group; scenario 3 – safety group). A different importance (weight) was given to each of the sub-criteria. The methodology presented in this paper can also be used for decision-making processes for other marine and coastal activities, where incorporating an ecosystem approach is necessary for taking into account safety and project costs; however, the selection of pre-elimination criteria, elimination criteria, and sub-criteria should be carefully adjusted to other situations or activities.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2021, 68 (140); 26--37
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of the spatial resolution of a three-dimensional hydrodynamic model for marine transport risk assessment
Autorzy:
Andrejev, O.
Soomere, T.
Sokolov, A.
Myrberg, K.
Powiązania:
https://bibliotekanauki.pl/articles/48522.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
2C map
anthropogenic pressure
Baltic Sea
environment risk
environmental management
Finland Gulf
hydrodynamic model
marine transport
maritime spatial planning
OAAS model
pollution
spatial resolution
statistical analysis
three-dimensional hydrodynamic model
Opis:
The paper addresses the sensitivity of a novel method for quantifying the environmental risks associated with the current-driven transport of adverse impacts released from offshore sources (e.g. ship traffic) with respect to the spatial resolution of the underlying hydrodynamic model. The risk is evaluated as the probability of particles released in different sea areas hitting the coast and in terms of the time after which the hit occurs (particle age) on the basis of a statistical analysis of large sets of 10-day long Lagrangian trajectories calculated for 1987–1991 for the Gulf of Finland, the Baltic Sea. The relevant 2D maps are calculated using the OAAS model with spatial resolutions of 2, 1 and 0.5 nautical miles (nm) and with identical initial, boundary and forcing conditions from the Rossby Centre 3D hydrodynamic model (RCO, Swedish Meteorological and Hydrological Institute). The spatially averaged values of the probability and particle age display hardly any dependence on the resolution. They both reach almost identical stationary levels (0.67–0.69 and ca 5.3 days respectively) after a few years of simulations. Also, the spatial distributions of the relevant fields are qualitatively similar for all resolutions. In contrast, the optimum locations for fairways depend substantially on the resolution, whereas the results for the 2 nm model differ considerably from those obtained using finer-resolutionmodels. It is concluded that eddy-permitting models with a grid step exceeding half the local baroclinic Rossby radius are suitable for a quick check of whether or not any potential gain from this method is feasible, whereas higher-resolution simulations with eddy-resolving models are necessary for detailed planning. The asymptotic values of the average probability and particle age are suggested as an indicator of the potential gain from the method in question and also as a new measure of the vulnerability of the nearshore of water bodies to offshore traffic accidents.
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The relationship between suspended particulate matter and turbidity at a mooring station in a coastal environment: consequences for satellite-derived products
Autorzy:
Jafar-Sidik, M.
Gohin, F.
Bowers, D.
Howarth, J.
Hull, T.
Powiązania:
https://bibliotekanauki.pl/articles/47870.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
suspended particulate matter
turbidity
coastal environment
seasonal variation
phytoplankton
chlorophyll a
Irish Sea
Opis:
From a data set of observations of Suspended Particulate Matter (SPM) concentration, Turbidity in Formazin Turbidity Unit (FTU) and fluorescence-derived chlorophyll-a at a mooring station in Liverpool Bay, in the Irish Sea, we investigate the seasonal variation of the SPM: Turbidity ratio. This ratio changes from a value of around 1 in winter (minimum in January— February) to 2 in summer (maximum in May—June). This seasonal change can be understood in terms of the cycle of turbulence and of the phytoplankton population that affects the nature, shape and size of the particles responsible for the Turbidity. The data suggest a direct effect of phytoplankton on the SPM:Turbidity ratio during the spring bloom occurring in April and May and a delayed effect, likely due to aggregation of particles, in July and August. Based on the hypothesis that only SPM concentration varies, but not the mass-specific backscattering coefficient of particles bbp *, semi-analytical algorithms aiming at retrieving SPM from satellite radiance ignore the seasonal variability of bbp * which is likely to be inversely correlated to the SPM:Turbidity ratio. A simple sinusoidal modulation of the relationship between Turbidity and SPM with time helps to correct this effect at the location of the mooring. Without applying a seasonal modulation to bbp *, there is an underestimation of SPM in summer by the Ifremer semi-analytical algorithm (Gohin et al., 2015) we tested. SPM derived from this algorithm, as expected from any semi-analytical algorithm, appears to be more related to in situ Turbidity than to in situ SPM throughout the year.
Źródło:
Oceanologia; 2017, 59, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The process of sea environment threats generated by hazardous chemicals release
Autorzy:
Bogalecka, M.
Kołowrocki, K.
Powiązania:
https://bibliotekanauki.pl/articles/2069318.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
sea accident
pollution
dangerous goods
properties of chemicals
environment threats
Opis:
The kinds of threats coming from chemicals released as a result of sea accident are distinguished. An exemplary procedure of defining states of the sea environment threats process generated by hazardous chemicals is presented. The interrelation between the sea environment threats and this environment degradation process is discussed and finally, a preliminary approach to a general modelling and prediction of the process of the environment threats caused by the process of initiating events generated by critical infrastructure accidents is presented.
Źródło:
Journal of Polish Safety and Reliability Association; 2015, 6, 1; 67--76
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Prevailing Weather and Traffic Conditions in the Evaluation of a Future ECA in the Mediterranean Sea. A view into the Western Mediterranean
Autorzy:
Castells, M.
Martínez-Osés, F. X.
Powiązania:
https://bibliotekanauki.pl/articles/116879.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Traffic Condition
Weather Condition
Mediterranean Sea
maritime transport
Environment Protection
Opis:
Appendix III of MARPOL´s Annex VI sets out the criteria and procedures for designating an emission control area (ECA).These criteria includes: a clear delineation of the proposed ECA; types of emissions proposed for control, land and sea areas at risk; emission quantification and impact assessment; prevailing weather conditions; data and quality on marine traffic; land based measures concurrent with the ECA adoption and the relative costs of reducing emissions from ships. This paper analyses the climate parameter together with traffic conditions: prevailing weather conditions as a parameter to be kept in mind for the adoption of a future ECA in the Mediterranean Sea. Preliminary results would show how marine emissions coming from existing traffic will impact the sea and land ecology in the Mediterranean area.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 157-163
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 Polish National Scientific Conference “Baltic 2015” and the inauguration of the “SatBaltyk” satellite monitoring system
Autorzy:
Dera, J.
Ostrowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/48024.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
conference
monitoring system
satellite monitoring
SatBaltyk project
aquatic environment
climate
biosphere
Baltic Sea
Źródło:
Oceanologia; 2016, 58, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Model of Oil Spills Due to Ships Collisions in Southern Baltic Area
Autorzy:
Gucma, L.
Przywarty, M.
Powiązania:
https://bibliotekanauki.pl/articles/117476.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
pollution
Environment Protection
Oil Spill
Baltic Sea
Ships Collision
Risk of Collision
Bunker Spill
Marine Accidents
Opis:
The paper presents implementation of probabilistic ships collision model to evaluation of possible oil spills in the Southern Baltic Sea area. The results of the model is time, place and size of the oil spill due to ships collision. The results could be used for oil spill response action plans. The paper will open the discussion about validation of achieved results and will try to answer the question about verification of Baltic Sea oil spills data in comparison to worlds statistics.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 415-419
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 influence of Lebork town on the pollutants load discharget into the Baltic Sea by the Leba River
Wpływ aglomeracji Lębork na ładunek zanieczyszczeń wnoszonych przez rzekę Łebę do Morza Bałtyckiego
Autorzy:
Trojanowski, J.
Parzych, A.
Trojanowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/84990.pdf
Data publikacji:
2003
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
Lebork town
pollutant
Baltic Sea
Leba River
oxygen demand
phosphorus
nitrogen
agglomeration
river
environment pollution
water quality
Central Pomerania region
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2002-2003, 07
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Implementation of Oil Spill Costs Model in the Southern Baltic Sea Area to Assess the Possible Losses Due to Ships Collisions
Autorzy:
Gucma, L.
Goryczko, E.
Powiązania:
https://bibliotekanauki.pl/articles/117188.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
pollution
Environment Protection
Oil Spill
Baltic Sea
Ships Collision
Assessment of Losses
Simulation Method
Oil Spill Costs Model
Opis:
The paper presents an attempt to assessment of losses due to oil spills caused by ships collisions in the Southern Baltic Sea area. To assess the losses the data from two models were used. First of them is simulation model of ships collision with consideration of oil spills developed and the second is the model of oil spill cleanup cost is applied without consideration of environmental conditions influence.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 405-407
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 effect of humic substances isolated from a variety of marine and lacustrine environments on different microorganisms
Autorzy:
Kupryszewski, G.
Pempkowiak, J.
Kedzia, A.
Powiązania:
https://bibliotekanauki.pl/articles/48478.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
marine environment
humic substance
sea water
lacustrine environment
microorganism
antimicrobial activity
bottom sediment
lake water
Opis:
The antimicrobial activity of twelve preparations of humic substances isolated from sea water, marine bottom sediments and lake water was examined. Humic substances from marine bottom sediment samples were fractionated into humic and/or fulvic acids. The susceptibility of 11 strains of anaerobic, 8str ains of aerobic bacteria and 2 strains of yeast-like fungi to preparations of humic substances, humic and/or fulvic acids was determined employing the plate dilution technique in Brucella agar (anaerobic bacteria), Mueller-Hinton agar (aerobic bacteria) and Sabouraud agar (yeast-like fungi). Concentrations from 150 to 600 μg ml−1 of the preparations examined inhibited the growth of numerous microorganisms (Table). The results obtained seem to indicate that humic substances are involved in the self-purification of sea and lake waters.
Źródło:
Oceanologia; 2001, 43, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dependence between bacterial production and environmental conditions in the Gulf of Gdańsk
Autorzy:
Ameryk, A.
Podgorska, B.
Witek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/48815.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
primary production
Baltic Sea
Gdansk Gulf
environment condition
bacterial production
heterotrophic bacteria
Opis:
Bacterial production, primary production and a number of other environmental factors were measured during six cruises in the Gulf of Gdańsk conducted in various seasons from 1995 to 2001. Bacterial production (BP) in the epipelagic layer ranged from 1.5% (April) to 80% (July) of the gross primary production (PP). Significant differences were observed between the BP/PP ratios in estuarine and open-water areas. The highest values were recorded in the coastal area and near the mouth of the river Vistula. It suggests that allochthonous organic matter has a great influence on BP. The correlations between particular parameters and regression analyses indicated that BP in the Gulf of Gdańsk depended on temperature, organic nitrogen concentration, PP, chlorophyll a concentration, organic phosphorus concentration, salinity and biochemical oxygen demand. Of all the independent variables, the temperature had the greatest impact on BP (R2 = 0.62). There was an inverse parabolic relationship between bacterial production and temperature. It appears that above a temperature of 12◦C bacterial production depended on substrates to a higher degree than on temperature. The negative correlation between BP and concentrations of mineral nitrogen and phosphorus in the annual cycle were probably due to an indirect dependence. A multiple regression equation, which included temperature and organic phosphorus concentrations, explained 78% of the variation in BP. Increasing BP resulted in an increasing biomass of bacterivorous nanoflagellates and of bacterivorous ciliates, which is indicative of bottom-up control in this segment of the trophic chain.
Źródło:
Oceanologia; 2005, 47, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
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