拉普捷夫海东部有机物质转化的地球化学标记

IF 1.3 4区地球科学 Q4 OCEANOGRAPHY Oceanology Pub Date : 2024-05-14 DOI:10.1134/s0001437024020115

N. A. Shulga, E. A. Romankevich, N. V. Vylegzhanina, E. A. Streltsova, V. Yu. Fedulov, A. V. Polyakova

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引用次数: 0

摘要

摘要研究人员沿勒拿河三角洲至大陆坡的子午线横断面（深度范围为 10 米至 2390 米，2015 年 9 月 Akademik Mstislav Keldysh 号考察船的第 63 次航行）调查了有机物（OM）从溶解形式向颗粒物、蓬松层和底层沉积物过渡时的供应和转化来源。对 OM 分子标记的研究表明，海洋和陆源的溶解有机物和颗粒有机物会在水体中发生生物降解，在底层沉积物中的累积量很小。因此，勒拿河径流中的 OM 并未参与夏季底层沉积物中 OM 的形成。在外陆架上发现了一个冰下水花对沉积过程有影响的区域。

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Geochemical Markers of Organic Matter Transformation in the Eastern Laptev Sea

Abstract

The sources of supply and transformation of organic matter (OM) as it transitions from dissolved form to particulate matter, fluffy layer, and bottom sediments were investigated along a meridional transect from the Lena River delta to the continental slope (in the depth range of 10 to 2390 meters, cruise 63 of the R/V Akademik Mstislav Keldysh, September 2015). The study of OM molecular markers showed that dissolved and particulate organic matter of marine and terrigenous origin biodegrades in the water column and accumulates insignificantly in bottom sediments. Thus, OM from Lena River runoff does not contribute to the formation of OM in bottom sediments in summer. An area of influence of under-ice blooms on the sedimentation process was identified on the outer shelf.

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来源期刊

Oceanology 地学-海洋学

CiteScore

2.00

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Oceanology, founded in 1961, is the leading journal in all areas of the marine sciences. It publishes original papers in all fields of theoretical and experimental research in physical, chemical, biological, geological, and technical oceanology. The journal also offers reviews and information about conferences, symposia, cruises, and other events of interest to the oceanographic community.