Late-Glacial Climate Transition in the Near East

题目：近东晚冰期气候转变本研究项目将主要通过湖泊碳酸盐的稳定同位素研究，重点研究近东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充足的日照驱动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重新评估近东地区过去的气候变化，包括日照的变化以及伴随北半球冰盖退缩的全球大气环流模式的变化。将从近东鲜为人知的四个湖泊的富碳酸盐沉积物岩心中发展出晚冰期至全新世水分平衡突变的稳定同位素地层学。目的是测试沿气候样带快速变化的一致性。

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.