High-Resoltuion Paleoclimatic Studies of Lake Turkana, Kenya

肯尼亚图尔卡纳湖的高分辨率古气候研究

• 批准号: 9106558
• 负责人: Bruce Finney
• 金额: $ 1.17万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1994-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9106558&HistoricalAwards=false
• 关键词: Resoltuion; Paleoclimatic; Studies; Lake; Turkana

The history of paleoclimate in East Africa is poorly known. Continental rifting in this region has produced a series of large lakes that span many climate regimes. If these lakes are shown to contain useful paleoclimate records, then much important information about the history of earth's climate could be obtained. The purpose of this research is to evaluate the potential of Lake Turkana, Kenya, for paleoclimate reconstructions. Sediments in this lake are accumulating at high rates, often in laminations that reflect the annual cycle of productivity and sedimentation. Thus the lake has the potential of allowing reconstruction of the history of climate in this region on annual to century time scales for the last 5000 years. This research is important because it will provide a high resolution climate record from which to study climate processes and change.

东非的古气候历史鲜为人知。该地区的大陆裂谷形成了一系列跨越多种气候条件的大型湖泊。如果这些湖泊被证明含有有用的古气候记录，那么就可以获得关于地球气候历史的许多重要信息。本研究的目的是评估肯尼亚图尔卡纳湖古气候重建的潜力。这个湖的沉积物以很高的速度积聚，通常呈层状，反映了生产力和沉积的年循环。因此，该湖有可能重建该地区过去5000年的年度至世纪时间尺度的气候历史。这项研究很重要，因为它将为研究气候过程和变化提供高分辨率的气候记录。