喀拉海东北部海底沉积物表层的粒度分布、有机碳和地球化学标志物

IF 1.3 4区地球科学 Q4 OCEANOGRAPHY

Oceanology Pub Date : 2024-05-14 DOI:10.1134/s0001437024020127

E. A. Streltsova, N. A. Belyaev, V. Y. Fedulov, E. M. Pushkareva

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引用次数: 0

摘要

摘要对喀拉海东北部海底沉积物的上层进行了研究。结果表明，沉积物成分以粉砂为主，砂的比例向海岸方向增加。有机碳含量（平均值为 1.1 wt %）接近喀拉海沉积物的平均含量，在深海站有所增加。有机碳含量与沉积物表面积之间的线性相关关系表明，颗粒表面的吸附是沉积物中有机物（OM）积累的主要形式。分析样本中正构烷烃的平均浓度为 1.1 微克/克沉积物；分布谱主要是来自陆源的奇数高分子同系物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Grain Size Distribution, Organic Carbon, and Geochemical Markers in the Surface Layer of Bottom Sediments in the Northeastern Kara Sea

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Grain Size Distribution, Organic Carbon, and Geochemical Markers in the Surface Layer of Bottom Sediments in the Northeastern Kara Sea

Abstract

The upper layer of bottom sediments in the northeastern Kara Sea is studied. It is shown that the sediment composition is dominated by silt, while the percentage of sand increases towards the coast. The organic carbon content (average value 1.1 wt %) is close to the average content in Kara Sea sediments, increasing at deep-sea stations. The linear correlation found between the organic carbon content and surface area of sediments shows adsorption on particle surfaces and is the predominant form of organic matter (OM) accumulation in the sediments. The average n-alkane concentration in the analyzed samples is 1.1 μg/g of sediment; the distribution spectrum is dominated by odd high-molecular homologues of terrigenous origin.

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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.