The Late Quaternary Paleoclimatic Archives of Lake Issyk-Kul, Kyrgyzstan: Calibration and Extension of the Sedimentological/Geochemical Proxy-Record

吉尔吉斯斯坦伊塞克湖晚第四纪古气候档案：沉积学/地球化学代理记录的校准和扩展

• 批准号: 9905324
• 负责人: Richard Ricketts
• 金额: $ 29.77万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-15 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9905324&HistoricalAwards=false
• 关键词: Late; Quaternary; Paleoclimatic; Archives; Lake

9905324Lake Issyk-Kul, in the Central Asian Republic of Kyrgyzstan, is the second largest high-altitude lake in the world. Issyk-Kul is a closed-basin lake located high in the Tien Shan, with abundant near shore and offshore carbonate sedimentation, and a long history of large-scale lake-level change. Issyk-Kul is found at a critical site under the influence of the prevailing Westerlies, and along the PAGES-PEP II transects between the winter Siberian High Pressure Cell and the summer Southwest Indian Low. Even subtle changes in moisture and/or temperature due to climatic shifts in the position or intensity of these major atmospheric elements should be strongly recorded in lake-level changes. The fundamental goal of the Issyk-Kul Paleoclimate Project (IKPP) is to create a high-resolution multi-proxy record of lake-level change in Lake Issyk-Kul over the past 20-25 ka, and in doing so, to clarify the Late Quaternary record of climatic change in this important and relatively little-known portion of the Asian continent.

9905324伊塞克湖位于中亚吉尔吉斯斯坦共和国，是世界第二大高海拔湖泊。伊塞克湖是一个位于天山高处的封闭盆地湖泊，近岸和近海碳酸盐沉积丰富，湖面大规模变化历史悠久。伊塞克湖位于受盛行西风带影响的关键地点，沿着冬季西伯利亚高压环和夏季西南印度低压之间的 PAGES-PEP II 横断面。即使是由于这些主要大气元素的位置或强度的气候变化而导致的湿度和/或温度的细微变化，也应该在湖面变化中得到强烈记录。伊塞克湖古气候项目 (IKPP) 的基本目标是创建伊塞克湖过去 20-25 ka 湖水位变化的高分辨率多代理记录，并在此过程中澄清亚洲大陆这一重要且相对鲜为人知的地区的晚第四纪气候变化记录。