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Doklady Earth Sciences - The dynamics of dissolved carbon forms in the waters of the mainstem of the Lena River from the middle reaches (the city of Yakutsk) to the nearshore zone of the Laptev Sea...  相似文献   
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Ulyantsev  A. S.  Bratskaya  S. Yu.  Dudarev  O. V.  Semiletov  I. P. 《Oceanology》2022,62(4):487-499
Oceanology - A comparative analysis of the content and composition of organic matter (OM) in samples of bottom sediments and subaqueous permafrost rocks by the concentration of organic carbon (OC),...  相似文献   
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The inconsistency between the position of the submarine permafrost table in the East Arctic seas revealed by simulation and anomalies in the distribution of dissolved methane associated with ascending torchlike ejections of bubbling methane made it necessary to develop a representative geophysical express method, which allows the position of the submarine permafrost table to be determined. The method is based on sounding of the generated primary electromagnetic field in the near zone of the medium and measurement of the induced secondary EM field. The reliability of the method is confirmed by core drilling in the Laptev Sea.  相似文献   
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Data collected in 2005–2009 are analyzed to study the main features of hydrological processes in the main part of the Amur estuary—the Amur Liman. Data on the morphological structure of the liman and the surge and tidal phenomena are analyzed. The variability of salinity field in different phases of river hydrological cycle is studied. Wind currents are shown to have an appreciable effect on the water exchange and river runoff distribution between the seas of Japan and Okhotsk in the ice-free season. In summer, the Amur runoff enters the Sea of Okhotsk. The main features of the structure of liman water in summer are identified. The northern part of the estuary is freshened by river runoff and partially mixed; it has a two-layer structure. A salt wedge forms at the northern exit from the liman into the Sea of Okhotsk, and strong water stratification is observed there.  相似文献   
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The mineral composition of the heavy fraction in surface sediments of the Laptev and East Siberian seas has been analyzed. The multivariate statistics methods were used to define the main heavy mineral assemblages with outlining regional differences in their compositions and principal factors responsible for the formation of sediment mineral affinity in the study areas. It is shown that the distribution of the determined heavy mineral assemblages is controlled by the geostructural positions of sedimentation basins.  相似文献   
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