Late-Glacial Climate Transition in the Near East

近东冰期末气候转变

• 批准号: 9423020
• 负责人: Herbert Wright
• 金额: $ 20.96万
• 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: 1995
• 资助国家: 美国
• 起止时间: 1995-05-01 至 1999-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9423020&HistoricalAwards=false
• 关键词: Late; Glacial; Climate; Transition; Near

Abstract ATM-9423020 Wright, Herbert E. University off Minnesota Title: Late-Glacial Climate Transition in the Near East This research project will focus on the nature and timing of late- glacial climatic transitions in the Near East, primarily by stable- isotope studies of lacustrine carbonates. Our current understanding of climate change in the region is based on pollen studies conducted before adequate models of insolation-driven climatic changes became available. Hence, the proposed investigation is specifically aimed at reevaluating past climate changes in the Near East in terms of changes in insolation as well as the shift in global atmospheric circulation patterns accompanying the retreat of the Northern Hemisphere ice sheets. Stable-isotope stratigraphy of late-glacial to Holocene abrupt changes in moisture-balance will be developed from cores with carbonate-rich sediments from four lakes in little known parts of the Near East. The objective is to test the coherency of rapid change along a climatic transect.

ATM-9423020 Wright，Herbert E.大学，明尼苏达州标题：近东地区的冰后期气候转变本研究项目将主要通过对湖泊碳酸盐的稳定同位素研究，重点研究近东地区晚冰期气候转变的性质和时间。我们目前对该地区气候变化的理解是基于在有足够的日照驱动的气候变化模型出现之前进行的花粉研究。因此，拟议的调查特别旨在根据日照变化以及伴随北半球冰盖消退而发生的全球大气环流模式的变化，重新评估近东过去的气候变化。从晚冰期到全新世的稳定同位素地层学将从来自近东鲜为人知的地区四个湖泊富含碳酸盐的沉积物的岩心中发展出水分平衡的突然变化。其目的是测试气候样带上快速变化的一致性。