Geochemical Analysis of Ancient Salt Deposits from the Dead Sea and its Climate and Hydrology During Warmer Periods in the Past 200,000 Years

死海古代盐矿床的地球化学分析及其过去 20 万年温暖时期的气候和水文

• 批准号: 1635391
• 负责人: Yael Kiro
• 金额: $ 31.51万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1635391&HistoricalAwards=false
• 关键词: Geochemical; Analysis; Ancient; Salt; Deposits

The climate and hydrology in the Middle East for the last 200,000 years can be deduced from chemical analyses of 460-meters of drill core obtained from beneath the Dead Sea by the International Continental Scientific Drilling Project (ICDP). Thick layers of salt deposited between 115,000 and 130,000 years ago imply drought conditions. The climate and hydrology in the Middle East during this time period can be compared with results from other regions to understand how they are connected globally. Using evidence from the past can test our theories and broaden our understanding of how the climate will respond in the future. This project will strengthen present and future international scientific collaboration through participation of students from Jordan and Israel.Drill core recovered by the Dead Sea Drilling Project contained thick layers of salt that document drought conditions in the Middle East between 115,000 and 130,000 years ago. The project will reconstruct the climate and hydrology during warmer periods in the past 200,000 years by analyzing the chemistry of fluid bubbles trapped in the salt. Geochemical measurements will be interpreted for rainfall, temperature, relative humidity, and winds. The results will be compared with predictions from climate models for this period in earth history.

根据国际大陆科学钻探项目（ICDP）从死海海底获得的460米长的岩芯的化学分析，可以推断出中东过去20万年的气候和水文。 115，000年至130，000年前沉积的厚厚的盐层意味着干旱条件。 这一时期中东的气候和水文可以与其他地区的结果进行比较，以了解它们是如何在全球范围内相互联系的。 使用过去的证据可以检验我们的理论，并扩大我们对未来气候将如何反应的理解。该项目将通过约旦和以色列学生的参与加强目前和未来的国际科学合作。死海钻探项目回收的钻井岩心含有厚厚的盐层，记录了115，000至130，000年前中东的干旱状况。 该项目将通过分析被困在盐中的流体气泡的化学性质，重建过去20万年来温暖时期的气候和水文。 地球化学测量结果将被解释为降雨量、温度、相对湿度和风。这些结果将与地球历史上这一时期气候模型的预测进行比较。

项目成果

Relationships between lake-level changes and water and salt budgets in the Dead Sea during extreme aridities in the Eastern Mediterranean

东地中海极端干旱期间死海湖水位变化与水盐预算之间的关系

• DOI: 10.1016/j.epsl.2017.01.043
• 发表时间: 2017
• 期刊: Earth and Planetary Science Letters
• 影响因子: 5.3
• 作者: Kiro, Yael;Goldstein, Steven L.;Garcia-Veigas, Javier;Levy, Elan;Kushnir, Yochanan;Stein, Mordechai;Lazar, Boaz
• 通讯作者: Lazar, Boaz