Temat: water column - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Kongsfjorden and Hornsund hydrography - comparative study based on a multiyear survey in fjords of West Spitsbergen
Autorzy:: Prominska, A.
Cisek, M.
Walczowski, W.
Powiązania:: https://bibliotekanauki.pl/articles/48487.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Kongsfjorden
Hornsund
hydrography
Atlantic water
transport
water column
water mass
water temperature
water salinity
Opis:: A recent study has shown increased warming in the fjords of west Spitsbergen. Their location is critical, as they are situated along the main northward pathway of Atlantic Water (AW) which is a great source of heat to the Arctic Ocean and the fjords. In the light of ongoing warming, we aim to discuss differences between the fjords under northward transformation of oceanic waters. We compared summer hydrographic conditions in two fjords located in two opposite ends of west Spistbergen: Hornsund in the south and Kongsfjorden in the north. The study is based on high resolution CTD measurements collected during Arctic cruises between 2001 and 2015. The emphasis was put not only on differences in water temperature, salinity and water masses but also the freshwater content (FWC), AW transport and heat delivery to the fjords. In general, the water in Kongsfjorden is on average 18C warmer and its salinity is higher by 0.5 compared to Hornsund. It is also characterized by two times greater transport of AW and heat delivery to the fjord. On the other hand, Hornsund reveals two times higher FWC. Both fjords undergo a gradual warming due to an increased presence of Atlantic origin waters. The ongoing warming is accompanied by an increase in variability of temperature and salinity dependent on the domination of the Sørkapp Current (SC) or the West Spitsbergen Current (WSC) on the West Spitsbergen Shelf (WSS). Nonetheless, Hornsund remains more Arctic-type fjord compared to Kongsfjorden, due to stronger blocking by SC.
Źródło:: Oceanologia; 2017, 59, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: On the buoyant sub-surface salinity maxima in the Gulf of Riga
Autorzy:: Liblik, T.
Skudra, M.
Lips, U.
Powiązania:: https://bibliotekanauki.pl/articles/48990.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: thermohaline structure
Riga Gulf
water column
temperature
salinity
stratification
water exchange
intrusion
Opis:: Thermohaline structure in the Gulf of Riga (GoR) was investigated by a multiplatform measurement campaign in summer 2015. Stratification of the water column was mainly controlled by the temperature while salinity had only a minor contribution. Buoyant salinity maxima with variable strength were observed in the intermediate layer of the Gulf of Riga. The salinity maxima were likely formed by a simultaneous upwelling—downwelling event at the two opposite sides of the Irbe strait. The inflowing salty water did not reach the deeper (> 35 m) parts of the gulf and, therefore, the near-bottom layer of the gulf remained isolated throughout the summer. Thus, the lateral water exchange regime in the near bottom layer of the Gulf of Riga is more complicated than it was thought previously. We suggest that the occurrence of this type of water exchange resulting in a buoyant inflow and lack of lateral transport into the near-bottom layers might contribute to the rapid seasonal oxygen decline in the Gulf of Riga
Źródło:: Oceanologia; 2017, 59, 2
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Deposition, return flux, and burial rates of nitrogen and phosphorus in the sediments of two high-Arctic fjords
Autorzy:: Koziorowska, K.
Kulinski, K.
Pempkowiak, J.
Powiązania:: https://bibliotekanauki.pl/articles/48289.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: nitrogen
phosphorus
sediment
Hornsund region
Kongsfjorden
water column
pore water
nutrient concentration
Arctic fjord
Źródło:: Oceanologia; 2018, 60, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Variability of temperature and salinity over the last decade in selected regions of the Southern Baltic Sea
Autorzy:: Rak, D.
Wieczorek, P.
Powiązania:: https://bibliotekanauki.pl/articles/48785.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: temperature
salinity
Southern Baltic Sea
trend
seasonal variability
physical property
water column
water exchange
water circulation
Opis:: Changes in the basic physical properties of selected areas of the Baltic Proper were analysed on the basis of the results of a 12-year series of high-resolution measurements collected during cruises of r/v ‘Oceania’. The high-resolution CTD sections covered three main basins: the Bornholm Basin, Słupsk Furrow and Gdańsk Basin. Positive temperature trends of 0.11 and 0.16◦C year−1 were observed in the surface and deep layers respectively. The salinity trend was also positive. The rise in the air temperature has probably caused the increase in surface water temperature, while advection has been of greater significance in the deep layer. The increase in salinity coincides with the more frequent occurrence of small and medium-size inflows through the Danish Straits, even though large inflows are evidently less frequent than used to be the case. The seasonal variability of temperature in the water column was analysed. The phase shift in the seasonal evolution with depth is described. The maximum temperature shift in the waters investigated varies from 32 to 38 days.
Źródło:: Oceanologia; 2012, 54, 3
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Stokes transport in layers in the water column based on long-term wind statistics
Autorzy:: Myrhaug, D.
Wang, H.
Holmedal, L.R.
Powiązania:: https://bibliotekanauki.pl/articles/48704.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: surface gravity wave
water column
water transport velocity
wind
Stokes transport
North Sea
North Atlantic
Źródło:: Oceanologia; 2018, 60, 3
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Estimation of zooplankton mortality caused by an Arctic glacier outflow
Autorzy:: Zajaczkowski, M.J.
Legezynska, J.
Powiązania:: https://bibliotekanauki.pl/articles/47423.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: water column
marine plankton
Arctic
zooplankton
marine organism
glacier outflow
fresh water
osmotic shock
mortality
Opis:: The outflow of freshwater from underwater channels in the Kongsbreen tidal glacier in Kongsfjorden, Svalbard, 79◦ N, was measured as 138.8 m3 s−1 at the peak of the melting season. Experiments on local marine plankton mortality show that when exposed to salinities below 9 PSU, all copepods die within 15 minutes. We estimate that during 100 days of the melting season, as many as 85 tonnes wet weight (WW) of plankton is removed from the water column due to osmotic shock, which makes up 15% of the standing zooplankton biomass of the fjord. The dead zooplankton sinks after exposure to low salinities and is probably an important food source for scavenging benthic fauna in the fjord. This mechanism could be responsible for the high numbers of Onisimus caricus near the glacier front.
Źródło:: Oceanologia; 2001, 43, 3; 341-351
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Average nutrient and chlorophyll distributions in the Western Mediterranean: RADMED project
Autorzy:: Garcia-Martinez, M.C.
Vargaz-Yanez, M.
Moya, F.
Santiago, R.
Munoz, M.
Reul, A.
Ramirez, T.
Balbin, R.
Powiązania:: https://bibliotekanauki.pl/articles/48926.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: climate change
water column
nutrient concentration
nutrient transport
chlorophyll
Mediterranean Sea
RADMED project
Źródło:: Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Addendum to “Stokes transport in layers in the water column based on long-term wind statistics: assessment using long-term wave statistics”
Autorzy:: Myrhaug, D.
Wang, H.
Holmedal, L.E.
Powiązania:: https://bibliotekanauki.pl/articles/47811.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: surface gravity wave
water transport velocity
Stokes transport
water column
wind statistics
long-term wave statisticsstatistic
Źródło:: Oceanologia; 2019, 61, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Dissolved oxygen variability in the Southern Baltic Sea in 2013—2018
Autorzy:: Rak, D.
Walczowski, W.
Dzierzbicka-Glowacka, L.
Shchuka, S.
Powiązania:: https://bibliotekanauki.pl/articles/2079094.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: dissolved oxygen concentration
oxygenation
sea water
water column
surface layer
seasonal cycle
major inflow
Baltic Sea
Opis:: This paper discusses changes in the dissolved oxygen concentration (DOC) in the southern Baltic Sea. The oxygenation of the whole water column was estimated. Monthly mean DOCs, as well as a detailed description of the annual surface layer dissolved oxygen (DO) cycle, are presented. The DO cycle at the surface is characterized by two maxima in March/April and November, and by two minima in July/August and December. The DO decline time after the major Baltic inflow (MBI) in 2014 was estimated at about 10 months for the Bornholm Deep and Słupsk Furrow. Whereas the Bornholm Basin was relatively well oxygenated, low oxygen concentrations (<4 mg l−1) were measured in the deep layer of the Gdańsk Deep throughout the inflow period. In addition, the cod spermatozoa activation layer together with the neutral egg buoyancy layer for the Bornholm Basin and Słupsk Furrow are discussed on the basis of the measured DOCs and the variability in hydrographic conditions.
Źródło:: Oceanologia; 2020, 62, 4PA; 525-537
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki