INVESTIGATIONS OF RADIONUCLIDE CONTENT OF THE SEDIMENT SAMPLES OBTAINED IN KERET BAY IN THE CHUPA ESTUARY, KANDALAKSHA GULF, WHITE SEA

Author(s):  
A. Rubchenya
Author(s):  
M. Yu. Tokarev ◽  
E. N. Poludetkina ◽  
A. V. Starovoytov ◽  
A. S. Pirogova ◽  
S. R. Korost ◽  
...  

The article discusses the results of complex geological, geophysical and geochemical studies of gas-saturated sediments within the Kandalaksha gulf, the White Sea. As a part of the marine study detailed seismoacoustic studies were conducted, resulting in the geometry of the seabed, the distribution of geological peculiarities of the sedimentary sequence, including the zones of focused unloading of hydrocarbon fluids. It is shown that assemblages of the «gas caps» are confined to the zones of maximal thickness of post-glacial sediments. The composition of the organic matter in the sediments and the gas phase has been studied in detail.


Oceanology ◽  
2012 ◽  
Vol 52 (5) ◽  
pp. 710-720 ◽  
Author(s):  
F. A. Romanenko ◽  
T. Yu. Repkina ◽  
L. E. Efimova ◽  
A. S. Bulochnikova

Harmful Algae ◽  
2006 ◽  
Vol 5 (5) ◽  
pp. 558-564 ◽  
Author(s):  
Alexander Vershinin ◽  
Anton Moruchkov ◽  
Steve L. Morton ◽  
Tod A. Leighfield ◽  
Michael A. Quilliam ◽  
...  

2019 ◽  
Vol 59 (1) ◽  
pp. 153-162
Author(s):  
Yu. A. Fedorov ◽  
A. E. Ovsepyan ◽  
V. A. Savitsky ◽  
A. P. Lisitzin ◽  
V. P. Shevchenko ◽  
...  

For the first time, vertical and lateral distribution patterns of mercury in White Sea bottom sediments have been determined. An abrupt change in the nature of mercury concentrations has been revealed, with a general tendency to decrease with depth. Natural variations in mercury concentrations within 0.01 - 0.03 μg/g dry weight (dw) have been established. An upper value of 0.03 μg/g dw is taken for the natural background content of the element. The distribution of mercury concentrations in the sequence of bottom sediments is influenced by both anthropogenic and natural factors and processes. With distance from the marine -estuary boundary of the Northern Dvina River, the river’s role in supplying mercury to the White Sea is reduced, and global and regional atmospheric mass transfer take over. The mercury content is used as an indicator of landslide processes in Kandalaksha Gulf of the White Sea. The accumulation chronology of mercury in White Sea sediments is studied, and the proportion of anthropogenic mercury is calculated.


Polar Biology ◽  
2018 ◽  
Vol 41 (7) ◽  
pp. 1359-1369 ◽  
Author(s):  
David K. Moss ◽  
Donna Surge ◽  
Vadim Khaitov
Keyword(s):  

2018 ◽  
Vol 31 (4) ◽  
pp. 390-396 ◽  
Author(s):  
A. A. Zhiltsova ◽  
A. V. Kharcheva ◽  
E. D. Krasnova ◽  
O. N. Lunina ◽  
D. A. Voronov ◽  
...  

Author(s):  
I. A. Nemirovskaya

The results of long-term studies of organic compounds in separated water bodies in two regions: Lake Stepped, Prydz Bay, Commonwealth Sea, (Antarctica) and lakes of the periphery of the Kandalaksha Gulf of the White Sea (the Arctic) are presented. It is established that the eutrophication of these reservoirs largely depends on the connection of these lakes with the sea. Coastal anthropogenic activity affects to a lesser extent. The restoration of the ecosystem of these lakes occurs at the launch of sea waters. The greatest differences between organic compounds in the Arctic and Antarctic waters are established in hydrocarbons. In Antarctica, due to the lack of vegetation, alkanes are dominated by autochthonous compounds, and in the Arctic along with autochthonous, allochthonous.


Geotectonics ◽  
2006 ◽  
Vol 40 (1) ◽  
pp. 53-63 ◽  
Author(s):  
T. I. Vasil’eva ◽  
E. S. Przhiyalgovskii

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