scholarly journals Water Mass Properties Derived From Satellite Observations in the Barents Sea

2020 ◽  
Vol 125 (8) ◽  
Author(s):  
Benjamin I. Barton ◽  
Camille Lique ◽  
Yueng‐Djern Lenn
Keyword(s):  
Barents Sea ◽  
Water Mass ◽  
Satellite Observations ◽  
The Barents Sea ◽  
Mass Properties

scholarly journals Confluence and redistribution of Atlantic water in the Nansen, Amundsen and Makarov basins

2002 ◽  
Vol 20 (2) ◽  
pp. 257-273 ◽  
Author(s):  
U. Schauer ◽  
B. Rudels ◽  
E. P. Jones ◽  
L. G. Anderson ◽  
R. D. Muench ◽  
...  
Keyword(s):  
Barents Sea ◽  
Water Mass ◽  
Atlantic Water ◽  
Lomonosov Ridge ◽  
Fram Strait ◽  
The Barents Sea ◽  
Mass Properties ◽  
Anna Trough ◽  
Eurasian Basin ◽  
Canadian Basin

Abstract. The waters in the Eurasian Basin are conditioned by the confluence of the boundary flow of warm, saline Fram Strait water and cold low salinity water from the Barents Sea entering through the St. Anna Trough. Hydrographic sections obtained from RV Polarstern during the summer of 1996 (ACSYS 96) across the St. Anna Trough and the Voronin Trough in the northern Kara Sea and across the Nansen, Amundsen and Makarov basins allow for the determination of the water mass properties of the two components and the construction of a qualitative picture of the circulation both within the Eurasian Basin and towards the Canadian Basin. At the confluence north of the Kara Sea, the Fram Strait branch is displaced from the upper to the lower slope and it forms a sharp front to the Barents Sea water at depths between 100 m and greater than 1000 m. This front disintegrates downstream along the basin margin and the two components are largely mixed before the boundary current reaches the Lomonosov Ridge. Away from the continental slope, the presence of interleaving structures coherent over wide distances is consistent with low lateral shear. The return flow along the Nansen Gakkel Ridge, if present at all, seems to be slow and the cold water below a deep mixed layer there indicates that the Fram Strait Atlantic water was not covered with a halocline for about a decade. Anomalous water mass properties in the interior of the Eurasian Basin can be attributed to isolated lenses rather than to baroclinic flow cores. Eddies have probably detached from the front at the confluence and migrated into the interior of the basin. One deep (2500 m) lens of Canadian Basin water, with an anticyclonic eddy signature, must have spilled through a gap of the Lomonosov Ridge. During ACSYS 96, no clear fronts between Eurasian and Canadian intermediate waters, such as those observed further north in 1991 and 1994, were found at the Siberian side of the Lomonosov Ridge. This indicates that the Eurasian Basin waters enter the Canadian Basin not only along the continental slope but they may also cross the Lomonosov Ridge at other topographic irregularities. A decrease in salinity around 1000 m in depth in the Amundsen Basin probably originates from a larger input of fresh water to the Barents Sea. The inherent density changes may affect the flow towards the Canadian Basin.Key words. Oceanography: general (Artic and Antartic oceanography; descriptive and regional oceanography) Oceanography: physical (hydrography)

scholarly journals HEAVY METALS IN ZOOPLANKTON ORGANISMS OF THE BARENTS SEA

2019 ◽  
Vol 47 (4) ◽  
pp. 62-75
Author(s):  
L. L. Demina ◽  
A. S. Solomatina ◽  
G. A. Abyzova
Keyword(s):  
Heavy Metals ◽  
Barents Sea ◽  
Water Mass ◽  
Atlantic Water ◽  
Polar Front ◽  
The Arctic ◽  
Phytoplankton Production ◽  
Arctic Water ◽  
The Barents Sea ◽  
Geochemical Parameters

Zooplankton plays a Central role in the transfer of matter and energy from primary producers to high trophic organisms, and zooplankton serves as an essential component of sedimentary material that supplies organic matter to the bottom of marine basins. The paper presents new data on the distribution of a number of heavy metals (Cd, Co, Cr, Cu, Mo, Ni, Pb) and As in the Calanus zooplankton collected in July–August 2017 in the North-Eastern, Eastern and Central parts of the Barents Sea. It is shown that the spatial distribution of metals in zooplankton organisms is influenced by both biotic ecosystem factors associated with bioproductivity and hydrological and geochemical parameters of the habitat (North Polar Front). In the zooplankton of the Arctic water mass to the South-East of Franz Josef Land, there was an increased content of essential heavy metals Cu, Zn and Cr in comparison with the coastal and Atlantic water masses. Zooplankton from the Central part of the sea (Atlantic water mass), where phytoplankton production is reduced, is characterized by the lowest concentrations of most elements (Ni, Cu, Zn, As and Pb). The highest concentrations were found for both essential heavy metals (Zn and Cu) and toxic metalloid As, which may indicate non-selective bioaccumulation of trace elements by copepods.

Satellite observations of the coccolithophorid bloom in the Barents Sea

Oceanology ◽  
2011 ◽  
Vol 51 (5) ◽  
pp. 766-774 ◽  
Author(s):  
V. I. Burenkov ◽  
O. V. Kopelevich ◽  
T. N. Rat’kova ◽  
S. V. Sheberstov
Keyword(s):  
Barents Sea ◽  
Satellite Observations ◽  
The Barents Sea

scholarly journals Development of a bio-optical model for the Barents Sea to quantitatively link glider and satellite observations

2020 ◽  
Vol 378 (2181) ◽  
pp. 20190367 ◽  
Author(s):  
I. Kostakis ◽  
R. Röttgers ◽  
A. Orkney ◽  
H. A. Bouman ◽  
M. Porter ◽  
...  
Keyword(s):  
Data Streams ◽  
Optical Model ◽  
Barents Sea ◽  
Satellite Observations ◽  
General Applicability ◽  
Biological Communities ◽  
Inherent Optical Properties ◽  
The Barents Sea ◽  
Observation Systems

A bio-optical model for the Barents Sea is determined from a set of in situ observations of inherent optical properties (IOPs) and associated biogeochemical analyses. The bio-optical model provides a pathway to convert commonly measured parameters from glider-borne sensors (CTD, optical triplet sensor—chlorophyll and CDOM fluorescence, backscattering coefficients) to bulk spectral IOPs (absorption, attenuation and backscattering). IOPs derived from glider observations are subsequently used to estimate remote sensing reflectance spectra that compare well with coincident satellite observations, providing independent validation of the general applicability of the bio-optical model. Various challenges in the generation of a robust bio-optical model involving dealing with partial and limited quantity datasets and the interpretation of data from the optical triplet sensor are discussed. Establishing this quantitative link between glider-borne and satellite-borne data sources is an important step in integrating these data streams and has wide applicability for current and future integrated autonomous observation systems. This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning’.

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