База данных: Электронная библиотека
Страница 1, Результатов: 2
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1.
Подробнее
A81
Arzhanova, N.V.
Hydrochemical Structure of Water Masses in Areas of the Antarctic Krill (Euphausia Superba Dana) Fisheries / Arzhanova, N.V., Artamonova, K.V. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 118-132. - 2014
~РУБ Article
Рубрики: Hydrochemistry
Antarctic krill
Fishery
Vortexes
Salinity
Temperature
Аннотация: Antarctic krill (Euphausia superba Dana) is considered a most valuable fishing object in the Antarctic waters. According to some estimates, its stocks totals hundred million tons. Besides, krill makes the basic part of feeding ration for numerous consumers, including sea birds, seals, whales, etc. Hydrochemical conditions in areas of the Antarctic krill concentrations in the Southern Ocean are reviewed. We have identified hydrochemical parameters which allow us to differentiate main water masses in the Antarctic waters (i.e. waters associated Antarctic Circumpolar Current (ACC) vs. water with the high-latitude modification associated with continental seas) and distinguish a zone of their interaction, the Secondary Frontal Zone (SFZ). This zone basically makes the areas of the krill dense concentrations.
Доп.точки доступа:
Artamonova, K.V.
A81
Arzhanova, N.V.
Hydrochemical Structure of Water Masses in Areas of the Antarctic Krill (Euphausia Superba Dana) Fisheries / Arzhanova, N.V., Artamonova, K.V. // Modern methods for assessing the biological productivity of waters in industrial areas of the World ocean: VNIRO proceedings. - M.: VNIRO Publishing, 2014. - V. 152. - P. 118-132. - 2014
Рубрики: Hydrochemistry
Antarctic krill
Fishery
Vortexes
Salinity
Temperature
Аннотация: Antarctic krill (Euphausia superba Dana) is considered a most valuable fishing object in the Antarctic waters. According to some estimates, its stocks totals hundred million tons. Besides, krill makes the basic part of feeding ration for numerous consumers, including sea birds, seals, whales, etc. Hydrochemical conditions in areas of the Antarctic krill concentrations in the Southern Ocean are reviewed. We have identified hydrochemical parameters which allow us to differentiate main water masses in the Antarctic waters (i.e. waters associated Antarctic Circumpolar Current (ACC) vs. water with the high-latitude modification associated with continental seas) and distinguish a zone of their interaction, the Secondary Frontal Zone (SFZ). This zone basically makes the areas of the krill dense concentrations.
Доп.точки доступа:
Artamonova, K.V.
2.
Подробнее
S70
Sologub, D.
Hydroacoustic Observation of Antarctic Krill (Euphausia superba) in Atlantic Sector of Antarctica During 2010/11 season / Sologub, D. // Commercial species and their biology: VNIRO proceedings. - M.: VNIRO Publishing, 2015. - V. 155. - P. 3-13. - 2015
~РУБ Article
Рубрики: Hydroacoustics
Distribution
Antarctica
Antarctic krill
Circulation
Coefficient
Аннотация: Hydroacoustic observations of Antarctic krill were made during the 27th Antarctic expedition of the RV "Polarstern" in CCAMLR Subareas 48.1, 48.2, 48.5 and 48.6 including in the central part of the Weddell Sea. Hydroacoustic data were collected using two-frequency echo sounder (70 and 120 kHz) "SIMRAD EK 60". Nautical Area Scattering Coefficient (NASC) was used for characteristic of krill density. NASC was calculated from 10 to 300 m depths with EDSU 5 nm. Maximal NASC values (average 44,4+-3,1 m2/n.m2) were recorded in the Antarctic Peninsula region (Subarea 48.1). Increasing of NASC was recorded in regions corresponding to the Antarctic Circumpolar Current, the Coastal Current and the circulation around the Maud Rise. NASC values in the central part of the Weddell Sea (between 15 degrees and 45 degrees W) were extremely low, mainly less than 1 m2/n.m2. Extremely low NASC indicates the absence of krill swarms in the central part of the Weddell Sea and probably connected with large-scale circulation of the Atlantic sector of Antarctica.
S70
Sologub, D.
Hydroacoustic Observation of Antarctic Krill (Euphausia superba) in Atlantic Sector of Antarctica During 2010/11 season / Sologub, D. // Commercial species and their biology: VNIRO proceedings. - M.: VNIRO Publishing, 2015. - V. 155. - P. 3-13. - 2015
Рубрики: Hydroacoustics
Distribution
Antarctica
Antarctic krill
Circulation
Coefficient
Аннотация: Hydroacoustic observations of Antarctic krill were made during the 27th Antarctic expedition of the RV "Polarstern" in CCAMLR Subareas 48.1, 48.2, 48.5 and 48.6 including in the central part of the Weddell Sea. Hydroacoustic data were collected using two-frequency echo sounder (70 and 120 kHz) "SIMRAD EK 60". Nautical Area Scattering Coefficient (NASC) was used for characteristic of krill density. NASC was calculated from 10 to 300 m depths with EDSU 5 nm. Maximal NASC values (average 44,4+-3,1 m2/n.m2) were recorded in the Antarctic Peninsula region (Subarea 48.1). Increasing of NASC was recorded in regions corresponding to the Antarctic Circumpolar Current, the Coastal Current and the circulation around the Maud Rise. NASC values in the central part of the Weddell Sea (between 15 degrees and 45 degrees W) were extremely low, mainly less than 1 m2/n.m2. Extremely low NASC indicates the absence of krill swarms in the central part of the Weddell Sea and probably connected with large-scale circulation of the Atlantic sector of Antarctica.
Страница 1, Результатов: 2