基于卫星重力时变重力场的全球典型流域水储量变化研究*
DOI:
作者:
作者单位:

1.华东交通大学土木建筑学院;2.中国科学院大学;3.河北省水利水电勘测设计研究院集团有限公司

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金青年项目


Research on Water Storage Changes of Global Typical Basins Based on Gravity Time-Varying Gravity Field
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    利用卫星重力技术监测全球陆地水储量变化兼具重要的实用价值和科学研究意义。本文基于GRACE时变重力场模型获取了2002年-2020年全球典型流域水储量变化,并探讨了气候和人为因素对区域水储量变化的影响。研究结果显示:地理区域相近流域的水储量时间序列具有相似的周期和振幅,而位于南北半球的临近流域水储量变化则呈现了相反的周期信号;墨累-达令流域内的水储量受到降水和蒸发共同影响,而印度河-恒河流域由于过度抽取地下水造成流域水储量不断下降;亚马逊流域内的GARCE和GLDAS获取水储量变化的相关性达到0.86,同时发现GRACE在探测区域干旱事件方面有独特的优势。

    Abstract:

    There are both import pratical value and scientific research significance of monitoring the global terrestrial water storage change (TWSC) by satellite gravity technology. Based on the GRACE time-varying gravitational field model, this paper obtains the TWSC of global typical river basins from 2002 to 2020, and discusses the influence of climate and human factors on the regional TWSC. The research results show that the TWSC in similar geographic regions have similar cycles and amplitudes, while the TWSC of adjacent watersheds located in the northern and southern hemispheres present opposite periodic signals. The TWSC in the Murray-Darling Basin is affected by precipitation and evaporation, while the Indus-Ganga River Basin has been declining due to excessive groundwater extraction. The correlation between GARCE and GLDAS acquired water storage changes in the Amazon basin reached 0.86. At the same time, it was found that GRACE has a unique advantage in detecting regional drought events.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-11-04
  • 最后修改日期:2021-11-28
  • 录用日期:2021-12-01
  • 在线发布日期: 2022-10-11
  • 出版日期: