US-China Collaborative Study of Holocene Paleoclimatology

中美全新世古气候学合作研究

• 批准号: 8909917
• 负责人: Stephen Porter
• 金额: $ 2.88万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1994-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8909917&HistoricalAwards=false
• 关键词: US; China; Collaborative; Study; Holocene

Loess sequences provide excellent records of aerosol concentrations in the atmosphere and the history of terrestrial aridity. The best loess sequences for study are in China, where as much as 10 meters of sediments were deposited in the Holocene. Throughout this interval of time, 14C dating techniques provide accurate chronologies of the sedimentation history; thus the temporal relationship between terrestrial climate change and other components of the climate system (ice volume, marine surface and deep water temperatures) can be accurately determined. This proposal will study the history of climate in China in a region with a sensitive response to the Asian monsoon. It is important because it will help to improve our understanding of the regional impact and chronology of the early Holocene intensification of monsoonal circulation, already documented in northern Indian Ocean sediment cores and nearby, tropical alpine ice cores.

黄土序列提供了良好的气溶胶记录 大气中的浓度和陆地 干旱 最好的黄土序列研究在中国， 全新世沉积了多达10米的沉积物。 在这段时间内，14 C测年技术提供了 沉积历史的精确年表;因此， 陆地气候变化与 气候系统的其他组成部分（冰量、海洋 表层和深层水温度）可以准确地 测定 这项提案将研究气候的历史， 中国处于对亚洲季风反应敏感的地区。 这很重要，因为它将有助于提高我们的理解 全新世早期的区域影响和年代学 季风环流的加强，已经记录在 北方印度洋沉积物岩心和附近的热带高山 冰芯。