利用GRACE/GRACE-FO时变重力场数据量化长江流域干旱事件特征

doi:10.13474/j.cnki.11-2246.2022.0139

测绘通报 ›› 2022, Vol. 0 ›› Issue (5): 45-48,55.doi: 10.13474/j.cnki.11-2246.2022.0139

利用GRACE/GRACE-FO时变重力场数据量化长江流域干旱事件特征

崔立鲁¹, 何明睿¹, 张诚¹, 邹正波², 汪晓龙³

1. 成都大学建筑与土木工程学院, 四川成都 610106;
2. 中国地震局地震研究所地震大地测量重点实验室, 湖北武汉 430071;
3. 南宁市勘察测绘地理信息院, 广西南宁 530022

收稿日期:2021-07-05 修回日期:2022-03-24 发布日期:2022-06-08
通讯作者: 邹正波。E-mail:zouzb@126.com
作者简介:崔立鲁(1983-),男,博士,副教授,从事卫星重力学研究。E-mail:lilucui@126.com
基金资助:
中国地震局地震研究所和应急管理部国家自然灾害防治研究院基本科研业务费专项(IS201956307);武汉引力与固体潮国家野外科学观测研究站开放研究基金(WHYWZ202102);国家自然科学基金(42074172;41431069);中国地震局地震科技星火计划(XH21021)

Using GRACE/GRACE-FO time variable gravity field data to quantify the characteristics of drought events in the Yangtze River basin

CUI Lilu¹, HE Mingrui¹, ZHANG Cheng¹, ZOU Zhengbo², WANG Xiaolong³

1. School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China;
2. Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan 430071, China;
3. Nanning Exploration & Survey Geoinformation Institute, Nanning 530022, China

Received:2021-07-05 Revised:2022-03-24 Published:2022-06-08

摘要/Abstract

摘要： 针对区域干旱事件特征精确量化的问题,本文首先提出了一种基于GRACE/GRACE-FO时变重力场数据的干旱事件评估方法,然后对基于GRACE/GRACE-FO数据的干旱指数进行了验证,最后利用上述评估方法探测了2002年4月—2020年12月长江流域发生的干旱事件,并对上述干旱事件特征进行量化分析。结果表明:在长江流域内,本文构建的干旱指数与传统干旱指数具有很好的一致性。在研究时间段内长江流域发生了8次较大的干旱事件,其中最严重的发生在2002年9月至2004年7月,共计持续了23个月,干旱严重程度为-14.07,平均40%的流域面积受到了干旱灾害的影响。

关键词: GRACE/GRACE-FO, 长江流域, 干旱事件, 评估, 干旱特征

Abstract: Aiming at the problem of accurate quantification the characteristics of regional drought event, a drought event assessment approach based on GRACE/GRACE-FO time variable gravity field is proposed in this paper. And the drought index based on GRACE/GRACE-FO data is validated using traditional drought indices. Finally, this approach is used to detect the drought events that occurred in the Yangtze River basin form April 2002 to December 2020 and quantify the characteristics of these drought events. The results show that the drought index in this paper has good consistent with the traditional drought indices, and there are eight major drought events in the Yangtze River basin during the study period, the most serious of which lasts 23 months from September 2002 to July 2004. The drought severity is -14.07 and an average of 40% of basin area has been affected by drought in this event.

Key words: GRACE/GRACE-FO, Yangtze River, drought event, assessment, drought characteristics

中图分类号:

P208
P23

崔立鲁, 何明睿, 张诚, 邹正波, 汪晓龙. 利用GRACE/GRACE-FO时变重力场数据量化长江流域干旱事件特征[J]. 测绘通报, 2022, 0(5): 45-48,55.

CUI Lilu, HE Mingrui, ZHANG Cheng, ZOU Zhengbo, WANG Xiaolong. Using GRACE/GRACE-FO time variable gravity field data to quantify the characteristics of drought events in the Yangtze River basin[J]. Bulletin of Surveying and Mapping, 2022, 0(5): 45-48,55.

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利用GRACE/GRACE-FO时变重力场数据量化长江流域干旱事件特征

Using GRACE/GRACE-FO time variable gravity field data to quantify the characteristics of drought events in the Yangtze River basin

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