【摘 要】
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Closed-basin lake levels in northwestern China during late MIS 3 (40~25 ka) have long been considered much higher than their Holocene counterparts, leading
【机 构】
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Luminescence Dating Group, Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of
【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
论文部分内容阅读
Closed-basin lake levels in northwestern China during late MIS 3 (40~25 ka) have long been considered much higher than their Holocene counterparts, leading to the creation of climate models incorporating a strong East Asian summer monsoon during late MIS 3.The hypothesis claimed that during the late MIS 3 in northwestern China, the temperature was 2~4℃ higher and the precipitation was even 100% higher than at present.Qinghai Lake, the largest closed-basin lake in China, lies in the northeastern part of the Qinghai-Tibetan Plateau.Controversies exist with respect to the timing of the high lake levels in Qinghai Lake since the last interglaciation.Our recent work identifying and dating (using optically-stimulated luminescence, OSL) the deposits (such as paleoshorelines, lacustrine, loess, ice wedges, fluvial, etc) around Qinghai Lake suggests that the lake histories on which this hvpothesis is based must be seriously modified.
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