Two million year history of the Indian Monsoon

印度季风的两百万年历史

基本信息

项目摘要

Over 3 billion people live in the area influenced by the Asian monsoon, the rains of which provide vital water resources while posing a risk to human life through flooding. Despite the importance to so many the monsoon is difficult to predict and model, making its future development in a changing global climate uncertain. To help improve models and predictions, histories of monsoon variability beyond the instrumental record are required. Many records of the East Asian monsoon have been generated from China and the South China Sea while past variability of the Indian Monsoon is mostly known from records of monsoon wind strength over the Arabian Sea. Here we propose to use the unique long sediment core obtained by the IODP vessel JOIDES Resolution in the Andaman Sea to examine the past variability of Indian Monsoon precipitation on the Indian sub-continent and directly over the ocean. Our multi-proxy approach will reveal changes in continental weathering, runoff and direct precipitation on orbital timescales for the last 2 million years filling a fundamental gap in our understanding of the Indian Monsoon in the past. More detailed studies will examine variations on millennial timescales for the last glacial and deglaciation, and the novel application of single foraminifera shell geochemistry will allow variability on inter-annual and seasonal timescales to be investigated for selected intervals.
超过30亿人生活在受亚洲季风影响的地区,这些地区的降雨提供了重要的水资源,同时也通过洪水对人类生命构成威胁。尽管对许多人来说季风很重要,但很难预测和建模,使其在不断变化的全球气候中的未来发展不确定。为了帮助改进模型和预测,需要仪器记录之外的季风变化历史。东亚季风的许多记录来自中国和南中国海,而印度季风过去的变化主要来自阿拉伯海季风风强度的记录。在这里,我们建议使用独特的长沉积物芯获得的IODP船舶JOIDES决议在安达曼海研究过去的变化,印度季风降水在印度次大陆和直接在海洋。我们的多代理方法将揭示过去200万年来轨道时间尺度上大陆风化、径流和直接降水的变化,填补我们过去对印度季风理解的一个根本空白。更详细的研究将审查末次冰期和冰消期千年时间尺度的变化,单一有孔虫壳地球化学的新应用将允许对选定间隔的年际和季节时间尺度的变化进行调查。

项目成果

期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
South Asian monsoon history over the past 60 kyr recorded by radiogenic isotopes and clay mineral assemblages in the Andaman Sea
  • DOI:
    10.1002/2014gc005586
  • 发表时间:
    2015-02-01
  • 期刊:
  • 影响因子:
    3.5
  • 作者:
    Ali, Sajid;Hathorne, Ed C.;Giosan, Liviu
  • 通讯作者:
    Giosan, Liviu
South Asian summer monsoon variability during the last ∼54 kyrs inferred from surface water salinity and river runoff proxies
  • DOI:
    10.1016/j.quascirev.2016.02.012
  • 发表时间:
    2016-04-15
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Gebregiorgis, D.;Hathorne, E. C.;Frank, M.
  • 通讯作者:
    Frank, M.
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Dr. Edmund Hathorne, Ph.D.其他文献

Dr. Edmund Hathorne, Ph.D.的其他文献

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{{ truncateString('Dr. Edmund Hathorne, Ph.D.', 18)}}的其他基金

Mid Miocene Indian Monsoon Dynamics
中新世中期印度季风动力学
  • 批准号:
    319971232
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Infrastructure Priority Programmes
Erhaltung geochemischer Proxies in Foraminiferen - Karbonatdiagenese im natürlichen Labor des IODP Pacific Equatorial Age Transect (PEAT)
IODP 太平洋赤道时代样带 (PEAT) 自然实验室中有孔虫 - 碳酸盐岩成岩作用中地球化学指标的保护
  • 批准号:
    175584968
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Infrastructure Priority Programmes

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