Landslide hazard detection in Markam with time-series InSAR analyses

被引：0
|
作者：
Zhang Y. [1 ]
Li Y. [2 ]
Dong J. [2 ]
Fan Q. [1 ]
Che B. [1 ]
Zhang L. [2 ]
Zhou Y. [3 ]
Liao M. [2 ]
机构：
[1] Southwest Section of State Grid Corporation of China, Chengdu
[2] State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan
[3] Beijing North-Star Digital Remote Sensing Technology Co. Ltd, Beijing
来源：
Yaogan Xuebao/Journal of Remote Sensing | 2019年 / 23卷 / 05期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Displacement characters; InSAR; Landslide detection; Remote sensing; SBAS; Time series analysis;
D O I：
10.11834/jrs.20198025
中图分类号：
学科分类号：
摘要：
In recent years, geological disasters like landslides have often occurred within the Markam area, which is located in the southeastern part of Tibet Autonomous Region. The stability of these landslides is affected by factors such as physical geographical/meteorological conditions and anthropogenic activities. These factors pose great threats to power grid construction/operation, major transportations, and public security. Hence, effective technologies are needed to detect potential landslide hazards within this area and provide key supports for decision making regarding disaster prevention and reduction. This study employed the small baseline subset InSAR technique to process archived SAR data stacks acquired by ALOS PALSAR and ENVISAT ASAR covering the Markam area. A few suspected landslide hazard sites are identified along National Highway 318 and the Valley of Jinsha River. Spatial distribution and temporal evolution patterns of the surface displacements upon these unstable slopes are characterized. © 2019, Science Press. All right reserved.
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页码：987 / 996
页数：9
相关论文
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