|Table of Contents|

Identification and Deformation Monitoring of PotentialGeotechnical Hazards in the Deqin Section of the Lancang River, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2024年第04期
Page:
557-568
Research Field:
大地测量、遥感与地学大数据
Publishing date:

Info

Title:
Identification and Deformation Monitoring of PotentialGeotechnical Hazards in the Deqin Section of the Lancang River, China
Author(s):
WANG Wei-zhuo1;  ZHAO Chao-ying1; 2; 3*;  LIU Xiao-jie4;  CHEN Li-quan1;  WEI Yu-ming4
(1. School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China; 2. Key Laboratory of Western China's Mineral Resources and Geological Engineering of Ministry of Education,Chang'an University,Xi'an 710054, Shaanxi, China; 3. Key Laboratoryof Ecological Geology and Disaster Prevention ofMinistry of Natural Resources,Chang'an University, Xi'an 710054, Shaanxi, China; 4. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China)
Keywords:
InSAR technolgy;  rock glacier;  geohazard;  deformation monitoring;  singular spectrum analysis;  Lancang River
PACS:
P237
DOI:
10.19814/j.jese.2023.12042
Abstract:
The southeastern Qinghai-Xizang Plateau has significant topographical variations, active tectonic movements and developed glaciers and permafrost. A variety of geotechnical disasters occur frequently in this region. In order to study the distribution characteristics and movement patterns of geotechnical hazards in this region,theDeqin section ofthe Lancang River was selected as the research area. Based on thedata formALOS-2satellite of one track and Sentinel-1Asatelliteof three tracks,large-scale geotechnical hazards investigation in the study area were conducted using Stacking-InSAR technology, whiletime-seriesmonitoring of typical debris flow source areas was carried out using DS-InSAR technology. Singular spectrum analysis(SSA)was employed to extract the periodic characteristics of deformation. The results show that there are a total of 670 deformation areas in the study area, most of which are rock glaciers located on the mountain tops of high elevations, and 27 landslides are distributed within a 5 km-distance from theLancang River; the deformation time series of the selected typical debris flow source area from 2017 to 2022 shows a linear trend; both precipitation and temperature are correlated with the periodic deformation of the rock glacier from this source area.

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Last Update: 2024-08-20