Carbonate oxygen isotope record from Lake Hovsgol, NW Mongolia, lake level changes and the link to a

来源 :“东亚欧环境变化过程-亚洲季风变化与高低纬气候相互作用”第八届国际研讨会 | 被引量 : 0次 | 上传用户：semitic

【摘要】

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【作者】

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Prokopenko A A Solotchina E P Zhdanova Anastasia N Kuzmin MI

【机构】

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Department of Earth and Ocean Sciences, University of South Carolina, Columbia, SC 29208, USA;Instit

【出处】

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“东亚欧环境变化过程-亚洲季风变化与高低纬气候相互作用”第八届国际研讨会

【发表日期】

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2011年3期

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　　Lake Hovsgol at 51°N in NW Mongolia is located in a rift basin with a small confined catchment.This lake serves as a sensitive "water gauge" in a region dominated by westerly atmospheric circulation in summer and by the Siberian (Asiatic) High pressure system in winter.Unlike most lakes in the region, Hovsgol remained relatively deep during the last glacial-interglacial transition, preserving a continuous record of finely-laminated sediments.Unlike in the neighboring Lake Baikal, sediments of Lake Hovsgol from the last glacial-interglacial transition contain both endogenic carbonates and ostracod shells.As a result, these sediments represent the first regional paleoclimate archive suitable for a study of past changes in the oxygen isotope composition of lake waters from δ18O of carbonates deposited in a stable deepwater lacustrine setting.

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