Collaborative Research: Lake Baikal Drilling Project: High Resolution Studies of Paleoclimate Change in South-Central Siberia During the Plio-Pleistocene

合作研究：贝加尔湖钻探项目：上里奥-更新世期间西伯利亚中南部古气候变化的高分辨率研究

• 批准号: 9614770
• 负责人: Douglas Williams
• 金额: $ 102.18万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614770&HistoricalAwards=false
• 关键词: Collaborative; Research; Lake; Baikal; Drilling

9614770 Williams This Project will involve the completion of the Principal Investigator's scientific investigation of high resolution signals of paleoclimate change recorded in Plio-Pleistocene sediments of Lake Baikal. The Baikal Drilling Project (BDP) is a multinational effort (Russia, Japan, Germany, USA) to extract the record of global climate change and tectonic evolution of the Lake Baikal sedimentary basin. Historically, the BDP began in 1989 as a joint Russian-American scientific venture. In January 1993, the BDP team, in cooperation with the NEDRA Drilling Enterprise of Yaroslavl, Russia, successfully deployed a light-weight drilling rig from a barge frozen into position on the Lake. With this system, the first long (100m) hydraulic piston cores were successfully recovered from two holes in 354m water depth providing climate data spanning the last 600,000 years. In January-March 1996 technological improvements of the BDP drilling system made by NEDRA enabled drilling to a subbottom depth of 250m, providing data on climate change up to 4.5 million years ago. Planned drilling will examine the response of Siberia's energy balance to the initiation and intensification of northern hemisphere glaciation (3 - 2.8 Ma) and the uplift of the Tibetan Plateau. One of the important hypotheses to be tested is the extent to which the long- term climatic evolution of Siberia has influenced the distribution of tundra and wetlands in central Asia and thus affected the global methane balance. ***

9614770威廉姆斯这个项目将涉及完成对贝加尔湖Plio-Pleistecene沉积物中记录的古气候变化的高分辨率信号的科学研究。 贝加尔钻探项目（BDP）是跨国努力（俄罗斯，日本，德国，美国），旨在提取贝加尔湖沉积物盆地的全球气候变化和构造演变的记录。 从历史上看，BDP始于1989年，是一家俄罗斯联合的美国科学企业。 1993年1月，BDP团队与俄罗斯Yaroslavl的Nedra Drilling Enterprise合作，成功地部署了一个轻量级的钻机，从驳船将冻结的钻机冻结到湖上。 使用该系统，第一个长（100m）的液压活塞核成功地从354m水深的两个孔中成功回收，提供了过去60万年的气候数据。 1996年1月3月，Nedra对BDP钻井系统的技术改进使钻探达到了25000万的subbottom深度，提供了有关气候变化的数据，可达450万年前。 计划的钻探将检查西伯利亚能量平衡对北半球冰川（3-2.8 MA）和藏族高原的升高的启动和增强的反应。 要测试的重要假设之一是西伯利亚的长期气候进化影响了中亚苔原和湿地的分布，从而影响了全球甲烷平衡。 ***