SURFACE SUBSIDENCE MONITORING IN GANZHOU AREA BASED ON SBAS-INSAR

被引：0
|
作者：
Li, Xinyi [1 ]
Zhou, Lv [1 ,4 ]
Ma, Jun [2 ]
Zhu, Zilin [3 ]
Li, Xin [4 ,5 ]
Huang, Ling [1 ]
机构：
[1] Guilin Univ Technol, Coll Geomat & Geoinformat, Guilin 541004, Peoples R China
[2] China Railway Siyuan Survey & Design Grp Co LTD, Wuhan 430063, Peoples R China
[3] BeiJing Vastitude Technol Co Ltd, Beijing 100191, Peoples R China
[4] Guilin Univ Technol, Guangxi Key Lab Spatial Informat & Geomat, Guilin 541004, Peoples R China
[5] Changan Univ, Coll Geol Engn & Geomant, Xian 710054, Peoples R China
来源：
XXIV ISPRS CONGRESS: IMAGING TODAY, FORESEEING TOMORROW, COMMISSION III | 2022年 / 43-B3卷
基金：
中国国家自然科学基金;
关键词：
SBASInSAR; surface subsidence; time series analysis; Ganzhou; temporal-spatial characteristics;
D O I：
10.5194/isprs-archives-XLIII-B3-2022-293-2022
中图分类号：
P9 [自然地理学];
学科分类号：
0705 ; 070501 ;
摘要：
In this paper, we first obtained the temporal-spatial changes of surface subsidence in Ganzhou area based on SBAS-InSAR technology using 24 scenes Sentine-1A images covering the Ganzhou area from 2018 to 2020. Then we studied the surface subsidence characteristics in the study area. Finally, the relationship between surface subsidence and factors such as precipitation, human engineering activities, groundwater extraction, and sediment accumulation were analyzed in Ganzhou area. The results showed that : 80% of the sedimentation rate was -5.43.0 mm/a in the study area; serious subsidence areas were mainly located in Ganxian District, which annual average subsidence rate reached -26.4mm/a, and the time series of surface subsidence was accompanied by certain seasonal changes; the seasonal changes in surface subsidence were related to rainfall and groundwater extraction, in addition, the surface subsidence was obviously affected by human engineering activities and river sediment accumulation.
引用
收藏
页码：293 / 299
页数：7
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