3 research outputs found
Lithological features of surface sediment and their influence on organic m atter distribution across the East-Siberian Arctic shelf
The Arctic is undergoing rapid climate change, which affects the global and regional carbon cycles. The East Siberian Arctic shelf, that is believed to store huge amounts of organic carbon in different pools, has been the subject of growing scientific interest in recent decades. The aim of the work was to study the lithological features of bottom sediments on the East Siberian Arctic shelf and to assess their influence on the spatial distribution of organic material in the study area. Materials and methods. The sediment samples were collected during the 45-day multidisciplinary SWERUS-C3 expedition on IB ODEN in summer 2014. Surface sediments from inner and middle East Siberian Arctic shelf were collected in summer 2008 during the International Siberian Shelf Study (ISSS-08) campaign onboard the HV Yakob Smirnitsky. The samples were analyzed for the grain size and specific surface area characteristics and total organic carbon content. It is shown that the subglacial sedimentation and the accumulation of predominantly fine-grained sediments prevail within the study area. Nevertheless, atypical sand zones were identified on the outer shelf. The authors have suggested several external factors, including modern and paleo ice scouring in the early Holocene, and intensive gas venting, which are accompanied by removal of fine-grained sediments. The paper considers spatial distribution of organic matter in the bottom sediments of the East Siberian Arctic shelf and its interrelation with their lithological properties
Geochemical characteristics of organic matter in bottom sediments in Ivashkina Lagoon (Bykovsky Peninsula, Laptev Sea)
ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ. Π Π½Π°ΡΡΠΎΡΡΠ΅Π΅ Π²ΡΠ΅ΠΌΡ Π΄Π»Ρ ΠΏΡΠΎΠ³Π½ΠΎΠ·ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΡΡ
ΠΊΠ»ΠΈΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ ΠΎΡΠΎΠ±ΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ ΠΈΠΌΠ΅Π΅Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΡΠΈΡΠΎΠ΄Π½ΡΡ
ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠΎΠ² ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π±ΠΈΠΎΠ³Π΅ΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΊΠΎΡΠΈΡΡΠ΅ΠΌΡ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΈ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ΠΎΠ². ΠΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π²Π΅ΡΠ΅ΡΡΠ²ΠΎ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ
Π΄ΠΎΠ½Π½ΡΡ
ΠΎΡΠ°Π΄ΠΊΠΎΠ², Π°ΠΊΠΊΡΠΌΡΠ»ΠΈΡΡΡΡΠ΅Π΅ Π³Π΅ΡΠ΅ΡΠΎΠ³Π΅Π½Π½ΡΠ΅ ΡΠΈΠ³Π½Π°Π»Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΡΡΠ°Π½ΡΠΏΠΎΡΡΠ° ΠΈ ΡΡΠ°Π½ΡΡΠΎΡΠΌΠ°ΡΠΈΠΈ ΡΠ³Π»Π΅ΡΠΎΠ΄Π°, ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΈΠ½Π΄ΠΈΠΊΠ°ΡΠΎΡΠΎΠΌ ΡΠ½ΠΈΠΊΠ°Π»ΡΠ½ΡΡ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΡΠ΅Π΄ΠΈΠΌΠ΅Π½ΡΠΎΠ³Π΅Π½Π΅Π·Π° ΠΈ Π΄ΠΈΠ°Π³Π΅Π½Π΅Π·Π° ΠΎΡΠ°Π΄ΠΊΠΎΠ². ΠΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ Π½Π°Π±ΠΎΡΠΎΠ² Π²ΡΡΠΎΠΊΠΎΡΠΎΡΠ½ΡΡ
Π³Π΅ΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠΎΠ² ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΏΠΎΠ»ΡΡΠΈΡΡ Π²Π°ΠΆΠ½ΡΡ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΡ ΠΎ Π²ΠΊΠ»Π°Π΄Π΅ Π°Π»Π»ΠΎΡ
ΡΠΎΠ½Π½ΠΎΠΉ ΠΈ Π°Π²ΡΠΎΡ
ΡΠΎΠ½Π½ΠΎΠΉ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΡ Π² ΡΠΎΡΡΠ°Π² ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²Π΅ΡΠ΅ΡΡΠ²Π° ΠΈ ΡΠ°ΠΊΠΈΠΌ ΠΎΠ±ΡΠ°Π·ΠΎΠΌ Π²Π½Π΅ΡΡΠΈ Π²ΠΊΠ»Π°Π΄ Π² ΠΏΠΎΠ½ΠΈΠΌΠ°Π½ΠΈΠ΅ ΠΎΡΠ΄Π΅Π»ΡΠ½ΡΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠΊΠ»Π° ΡΠ³Π»Π΅ΡΠΎΠ΄Π°. Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π·Π°ΠΊΠ»ΡΡΠ°Π΅ΡΡΡ Π² ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠΈ Π»ΠΈΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΠΎΡΠ³Π°Π½ΠΎ-Π³Π΅ΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΠΎΡΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ, Π½Π°ΠΊΠΎΠΏΠ»Π΅Π½Π½ΡΡ
Π² ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π»Π°Π³ΡΠ½Π½ΡΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΏΡΠΈΠ±ΡΠ΅ΠΆΠ½ΠΎΠΉ ΡΠ°ΡΡΠΈ ΠΌΠΎΡΡ ΠΠ°ΠΏΡΠ΅Π²ΡΡ
(ΠΠ²Π°ΡΠΊΠΈΠ½Π° Π»Π°Π³ΡΠ½Π°, ΠΡΠΊΠΎΠ²ΡΠΊΠΈΠΉ ΠΏΠΎΠ»ΡΠΎΡΡΡΠΎΠ²). ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π±ΡΠ» Π²ΡΠ±ΡΠ°Π½ ΡΠ°Π·ΡΠ΅Π· ΠΎΡΠ°Π΄ΠΊΠΎΠ² Π² ΡΠ°ΠΉΠΎΠ½Π΅ Π΄Π΅Π»ΡΡΡ ΡΠ΅ΠΊΠΈ ΠΠ΅Π½Π°. ΠΠ»Ρ ΠΎΡΠ΅Π½ΠΊΠΈ ΠΈΠ·ΠΌΠ΅Π½ΡΠΈΠ²ΠΎΡΡΠΈ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΠ°Π²Π° ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²Π΅ΡΠ΅ΡΡΠ²Π° Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ Π½Π°ΠΊΠΎΠΏΠ»Π΅Π½ΠΈΡ ΡΠΎΠ»Ρ ΠΎΡΠ°Π΄ΠΊΠΎΠ² Π±ΡΠ» ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ 18-ΠΌΠ΅ΡΡΠΎΠ²ΡΠΉ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π» ΠΊΠ΅ΡΠ½Π° ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ VD-13, ΠΏΡΠΎΠ±ΡΡΠ΅Π½Π½ΠΎΠΉ Π² ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΠΎΠΉ ΡΠ°ΡΡΠΈ ΠΠ²Π°ΡΠΊΠΈΠ½ΠΎΠΉ Π»Π°Π³ΡΠ½Ρ Π²ΠΎ Π²ΡΠ΅ΠΌΡ Π²Π΅ΡΠ΅Π½Π½Π΅ΠΉ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΊΡΠΏΠ΅Π΄ΠΈΡΠΈΠΈ 2013 Π³. ΠΠ»Ρ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² Π±ΡΠ»ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΠΈΡ
Π³ΡΠ°Π½ΡΠ»ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Ρ ΠΏΠΈΡΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ Ρ
ΡΠΎΠΌΠ°ΡΠΎ-ΠΌΠ°ΡΡ-ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠ΅ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ³Π»Π΅ΡΠΎΠ΄Π° (Π‘ΠΎΡΠ³) Π² ΡΠ°Π·ΡΠ΅Π·Π΅ ΠΏΡΠΈΡΡΠΎΡΠ΅Π½ΠΎ ΠΊ ΠΏΠ΅Π»ΠΈΡΠΎΠ²ΠΎΠΉ ΡΡΠ°ΠΊΡΠΈΠΈ ΠΎΡΠ°Π΄ΠΊΠΎΠ². Π Π°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Π½-Π°Π»ΠΊΠ°Π½ΠΎΠ² Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΠ΅ΡΡΡ Π΄ΠΎΠΌΠΈΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π²ΡΡΠΎΠΊΠΎΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΡ
Π½Π΅ΡΠ΅ΡΠ½ΡΡ
Π³ΠΎΠΌΠΎΠ»ΠΎΠ³ΠΎΠ², ΡΡΠΎ ΡΠΊΠ°Π·ΡΠ²Π°Π΅Ρ Π½Π° ΠΏΠΎΠ²ΡΠ΅ΠΌΠ΅ΡΡΠ½ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡΠΈΠΉ Π²ΠΊΠ»Π°Π΄ Π²ΡΡΡΠ΅ΠΉ Π½Π°Π·Π΅ΠΌΠ½ΠΎΠΉ ΡΠ°ΡΡΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ Π² ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²Π΅ΡΠ΅ΡΡΠ²Π°, Π°ΠΊΠΊΡΠΌΡΠ»ΠΈΡΡΠ΅ΠΌΠΎΠ³ΠΎ Π² ΠΎΡΠ°Π΄ΠΊΠ°Ρ
. Π’Π΅ΠΌ Π½Π΅ ΠΌΠ΅Π½Π΅Π΅, Π²ΠΊΠ»Π°Π΄ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎ ΠΌΠΈΠ³ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΡ Π½Π΅ ΠΈΡΠΊΠ»ΡΡΠ΅Π½, ΡΠ°ΠΊ ΠΊΠ°ΠΊ Π΄Π»Ρ ΡΡΠ΄Π° ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² ΠΎΡΠΌΠ΅ΡΠ°Π΅ΡΡΡ ΠΏΡΠΈΡΡΡΡΡΠ²ΠΈΠ΅ Π½ΠΈΠ·ΠΊΠΎΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎΠΉ ΡΡΠ°ΠΊΡΠΈΠΈ Π½-Π°Π»ΠΊΠ°Π½ΠΎΠ². Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΏΠΈΡΠΎΠ»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² ΡΠΊΠ°Π·ΡΠ²Π°ΡΡ Π½Π° ΡΠ΅Π·ΠΊΡΡ ΠΈΠ·ΠΌΠ΅Π½ΡΠΈΠ²ΠΎΡΡΡ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ Π‘ΠΎΡΠ³ ΠΈ Π»Π΅ΡΡΡΠΈΡ
ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ Ρ Π³Π»ΡΠ±ΠΈΠ½ΠΎΠΉ.Studying Arctic biogeochemical ecosystem with various methods and approaches is of vital importance to further predict future global climate changes. Organic matter of modern bottom sediments, which accumulates heterogeneous signals of various processes of carbon transport and transformation, acts as the unique indicator of initial depositional environment of sediment and its diagenetic history. Using high-precision geochemical instruments allows us to obtain important information on potential input of both allochthonous and autochthonous components to organic matter, and thus to further promote understanding of the modern Arctic carbon cycle. The aim of the research is to study the lithological and organo-geochemical features of the sediments accumulated in the specific lagoon conditions of the coastal part of the Laptev Sea (Ivashkina Lagoon, Bykovsky Peninsula). Materials and methods. Precipitation in the area of the Lena river delta was selected as an object of the study. To assess the variability of molecular composition of organic matter in accumulation of sediments, the 18--meter interval of the VD-13 well, drilled in the central part of the Ivashkina lagoon during the 2013 spring Arctic expedition, was investigated. For the samples, their granulometric characteristics were determined, and pyrolytic and chromatography-mass spectrometric studies were conducted as well. It is shown that the increased content of organic carbon in the section is confined to the pelitic fraction of sediments. The distribution of n-alkanes is characterized by the dominance of high molecular weight odd homologues, which indicates the ubiquitous contribution of higher terrestrial vegetation to formation of organic matter accumulated in sediments. However, the contribution of the potentially migratory organic component is not excluded, since the presence of a low molecular weight fraction of n-alkanes is noted for a number of samples. The results of the pyrolytic analysis of the samples indicate a sharp variability in the content of Corg and volatile organic compounds with depth
Lithological features of surface sediment and their influence on organic m atter distribution across the East-Siberian Arctic shelf
ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ. ΠΠΎΡΡΠΎΡΠ½ΠΎ-Π‘ΠΈΠ±ΠΈΡΡΠΊΠΈΠΉ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΠ΅Π»ΡΡ - ΡΠ½ΠΈΠΊΠ°Π»ΡΠ½ΡΠΉ ΠΏΡΠΈΡΠΎΠ΄Π½ΡΠΉ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡ, Π² ΠΏΠΎΡΠ»Π΅Π΄Π½ΠΈΠ΅ Π΄Π΅ΡΡΡΠΈΠ»Π΅ΡΠΈΡ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»ΡΡΡΠΈΠΉ ΠΎΡΠΎΠ±ΡΠΉ ΠΈΠ½ΡΠ΅ΡΠ΅Ρ Π΄Π»Ρ ΡΡΠ΅Π½ΡΡ
ΠΏΡΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΡΡΠ½ΠΊΡΠΈΠΎΠ½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΊΠ»ΠΈΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΠΈ Π΅Π΅ Π²Π»ΠΈΡΠ½ΠΈΡ Π½Π° ΡΡΠΈΠ»ΠΈΠ²Π°ΡΡΠ΅Π΅ΡΡ Π³Π»ΠΎΠ±Π°Π»ΡΠ½ΠΎΠ΅ ΠΏΠΎΡΠ΅ΠΏΠ»Π΅Π½ΠΈΠ΅. ΠΡΠΎΠΌΠ΅ ΡΠΎΠ³ΠΎ, ΡΠ°Π·Π½ΠΎΡΡΠΎΡΠΎΠ½Π½Π΅Π΅ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΠΏΡΠΈΡΠΎΠ΄Π½ΡΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² Π½Π° Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΡΠ΅Π»ΡΡΠ΅ ΠΌΠΎΡΠΈΠ²ΠΈΡΠΎΠ²Π°Π½ΠΎ ΠΈ Π΄ΡΡΠ³ΠΈΠΌ ΠΊΠ»ΡΡΠ΅Π²ΡΠΌ ΠΏΡΠΈΠΊΠ»Π°Π΄Π½ΡΠΌ Π°ΡΠΏΠ΅ΠΊΡΠΎΠΌ - ΠΈΠ½ΡΠ΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠ΅ΠΉ ΠΏΠΎΠΈΡΠΊΠΎΠ²ΠΎ-ΡΠ°Π·Π²Π΅Π΄ΠΎΡΠ½ΡΡ
ΡΠ°Π±ΠΎΡ Π½Π° ΡΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡΠΎΠ΄Π½ΡΠ΅ ΡΠ΅ΡΡΡΡΡ. Π¦Π΅Π»ΡΡ ΡΠ°Π±ΠΎΡΡ ΡΠ²ΠΈΠ»ΠΎΡΡ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ Π»ΠΈΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ Π΄ΠΎΠ½Π½ΡΡ
ΠΎΡΠ°Π΄ΠΊΠΎΠ² Π½Π° ΠΠΎΡΡΠΎΡΠ½ΠΎ-Π‘ΠΈΠ±ΠΈΡΡΠΊΠΎΠΌ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΡΠ΅Π»ΡΡΠ΅ ΠΈ ΠΎΡΠ΅Π½ΠΊΠ° ΠΈΡ
Π²Π»ΠΈΡΠ½ΠΈΡ Π½Π° ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΠΎΠ΅ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π° Π½Π° ΡΠ΅ΡΡΠΈΡΠΎΡΠΈΠΈ ΠΠΎΡΡΠΎΡΠ½ΠΎ-Π‘ΠΈΠ±ΠΈΡΡΠΊΠΎΠ³ΠΎ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ΅Π»ΡΡΠ°. ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΎ Π½Π° ΠΈΠ·ΡΡΠ΅Π½ΠΈΠΈ ΠΏΡΠΎΠ±, ΠΎΡΠΎΠ±ΡΠ°Π½Π½ΡΡ
Π½Π° Π²Π½Π΅ΡΠ½Π΅ΠΌ ΡΠ°ΡΡΠΈ ΠΠΎΡΡΠΎΡΠ½ΠΎ-Π‘ΠΈΠ±ΠΈΡΡΠΊΠΎΠ³ΠΎ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ΅Π»ΡΡΠ° Π² 45-Π΄Π½Π΅Π²Π½ΠΎΠΉ ΠΌΡΠ»ΡΡΠΈΠ΄ΠΈΡΡΠΈΠΏΠ»ΠΈΠ½Π°ΡΠ½ΠΎΠΉ ΡΠΊΡΠΏΠ΅Π΄ΠΈΡΠΈΠΈ SWERUS-3 Π½Π° Π»Π΅Π΄ΠΎΠΊΠΎΠ»Π΅ ODEN Π»Π΅ΡΠΎΠΌ 2014 Π³. ΠΠ° Π²Π½ΡΡΡΠ΅Π½Π½Π΅ΠΌ ΠΈ ΡΡΠ΅Π΄Π½Π΅ΠΌ ΠΠΎΡΡΠΎΡΠ½ΠΎ-Π‘ΠΈΠ±ΠΈΡΡΠΊΠΎΠΌ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠΌ ΡΠ΅Π»ΡΡΠ΅ ΠΎΠ±ΡΠ°Π·ΡΡ ΠΎΡΠ°Π΄ΠΊΠΎΠ² Π±ΡΠ»ΠΈ ΠΎΡΠΎΠ±ΡΠ°Π½Ρ Π² ΡΠΊΡΠΏΠ΅Π΄ΠΈΡΠΈΠΈ International Siberian Shelf Study (ISSS-08) Π½Π° Π±ΠΎΡΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΡΠΊΠΎΠ³ΠΎ ΡΡΠ΄Π½Π° Β«Π―ΠΊΠΎΠ² Π‘ΠΌΠΈΡΠ½ΠΈΡΠΊΠΈΠΉΒ» Π»Π΅ΡΠΎΠΌ 2008 Π³. ΠΠ»Ρ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² Π±ΡΠ»ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΠΈΡ
Π³ΡΠ°Π½ΡΠ»ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ, ΡΠ΄Π΅Π»ΡΠ½Π°Ρ ΠΏΠ»ΠΎΡΠ°Π΄Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π·Π΅ΡΠ΅Π½ ΠΈ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ ΠΎΠ±ΡΠ΅Π³ΠΎ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ³Π»Π΅ΡΠΎΠ΄Π°. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π½Π° ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΠΎΠΉ Π°ΠΊΠ²Π°ΡΠΎΡΠΈΠΈ ΠΏΡΠ΅ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ ΡΠΈΠΏ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΠΉ ΠΏΠΎΠ΄Π»Π΅Π΄Π½ΠΎΠΉ ΡΠ΅Π΄ΠΈΠΌΠ΅Π½ΡΠ°ΡΠΈΠΈ Ρ Π°ΠΊΠΊΡΠΌΡΠ»ΡΡΠΈΠ΅ΠΉ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ Π΄ΠΈΡΠΏΠ΅ΡΡΠ½ΡΡ
ΠΎΡΠ°Π΄ΠΊΠΎΠ². Π’Π΅ΠΌ Π½Π΅ ΠΌΠ΅Π½Π΅Π΅, Π½Π° Π²Π½Π΅ΡΠ½Π΅ΠΌ ΡΠ΅Π»ΡΡΠ΅ Π²ΡΠ΄Π΅Π»Π΅Π½Ρ Π°Π·ΠΎΠ½Π°Π»ΡΠ½ΡΠ΅ Π΄Π»Ρ Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ°ΠΉΠΎΠ½Π° ΠΏΠ΅ΡΡΠ°Π½ΡΠ΅ ΠΎΠ±Π»Π°ΡΡΠΈ, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΠ΅ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ΠΌ ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΈΠ»ΠΈ Π½Π΅ΡΠΊΠΎΠ»ΡΠΊΠΈΡ
Π²Π½Π΅ΡΠ½ΠΈΡ
ΡΠ°ΠΊΡΠΎΡΠΎΠ², ΡΡΠ΅Π΄ΠΈ ΠΊΠΎΡΠΎΡΡΡ
ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½Π°Ρ Π»Π΅Π΄ΠΎΠ²Π°Ρ ΡΡΠΎΠ·ΠΈΡ, ΡΠΊΠ·Π°ΡΠ°ΡΠΈΠΎΠ½Π½Π°Ρ Π΄Π΅ΡΡΠ΅Π»ΡΠ½ΠΎΡΡΡ ΠΏΠ°Π»Π΅ΠΎ-Π»Π΅Π΄Π½ΠΈΠΊΠΎΠ² Π² ΡΠ°Π½Π½Π΅ΠΌ Π³ΠΎΠ»ΠΎΡΠ΅Π½Π΅, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½Π°Ρ ΡΠ°Π·Π³ΡΡΠ·ΠΊΠ° Π³Π°Π·ΠΎΠ²ΡΡ
ΡΠ»ΡΠΈΠ΄ΠΎΠ², ΡΠΎΠΏΡΠΎΠ²ΠΎΠΆΠ΄Π°ΡΡΠ°ΡΡΡ Π²ΡΠΌΡΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΎΠ½ΠΊΠΎΠ·Π΅ΡΠ½ΠΈΡΡΡΡ
ΠΎΡΠ°Π΄ΠΊΠΎΠ². Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½ΠΎ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΠΎΠ΅ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²Π΅ΡΠ΅ΡΡΠ²Π° Π² Π΄ΠΎΠ½Π½ΡΡ
ΠΎΡΠ°Π΄ΠΊΠ°Ρ
ΠΠΎΡΡΠΎΡΠ½ΠΎ-Π‘ΠΈΠ±ΠΈΡΡΠΊΠΎΠ³ΠΎ Π°ΡΠΊΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠ΅Π»ΡΡΠ° ΠΈ Π΅Π³ΠΎ Π²Π·Π°ΠΈΠΌΠΎΡΠ²ΡΠ·Ρ Ρ ΠΈΡ
Π»ΠΈΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ.The Arctic is undergoing rapid climate change, which affects the global and regional carbon cycles. The East Siberian Arctic shelf, that is believed to store huge amounts of organic carbon in different pools, has been the subject of growing scientific interest in recent decades. The aim of the work was to study the lithological features of bottom sediments on the East Siberian Arctic shelf and to assess their influence on the spatial distribution of organic material in the study area. Materials and methods. The sediment samples were collected during the 45-day multidisciplinary SWERUS-C3 expedition on IB ODEN in summer 2014. Surface sediments from inner and middle East Siberian Arctic shelf were collected in summer 2008 during the International Siberian Shelf Study (ISSS-08) campaign onboard the HV Yakob Smirnitsky. The samples were analyzed for the grain size and specific surface area characteristics and total organic carbon content. It is shown that the subglacial sedimentation and the accumulation of predominantly fine-grained sediments prevail within the study area. Nevertheless, atypical sand zones were identified on the outer shelf. The authors have suggested several external factors, including modern and paleo ice scouring in the early Holocene, and intensive gas venting, which are accompanied by removal of fine-grained sediments. The paper considers spatial distribution of organic matter in the bottom sediments of the East Siberian Arctic shelf and its interrelation with their lithological properties