首页|基于综合遥感的察隅县滑坡隐患识别及致灾机理分析

基于综合遥感的察隅县滑坡隐患识别及致灾机理分析

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察隅县地处青藏高原东南部,幅原辽阔,地形地貌与气候特征差异较大,滑坡灾害频发.针对该区域开展滑坡灾害隐患识别与早期预警对当地防灾减灾工作有重要意义.为此,收集 2020 年 1 月—2022 年 11 月获取的 162景升降轨Sentinel-1A雷达遥感影像数据及高分光学遥感影像数据,以Google Earth平台为辅助,采用综合遥感(in-tegrated remote sensing,IRS)技术开展研究区内活动性滑坡隐患识别、编录制图和分析评价,共识别出活动性滑坡隐患 237 处,主要分布于贡日嘎布曲(察隅河支流西支)、察隅河、怒江两岸及察隅河东部至怒江西部的区域.将解译结果与地形地貌(高程、坡度、岩性)、自然环境(降雨、温度)等定量因子结合进行统计分析可知,左布村滑坡、阿扎村滑坡有极大的灾害风险,推荐进一步采取减灾措施.研究结果具有较高精度,可为当地防灾减灾工作提供参考.
Integrated remote sensing-based hazard identification and disaster-causing mechanisms of landslides in Zayu County
Zayu County,located in the southeastern portion of the Qinghai-Tibet Plateau,is characterized by a large area,significantly varying topographic and climatic characteristics,and frequent landslides.The hazard identification and early warning of landslides are critical to disaster prevention and mitigation in the county.Based on the data acquired from January 2020 to November 2022,including 162 scenes of Sentinel-1A Radar remote sensing images taken on ascending and descending passes and high-resolution optical remote sensing images,this study conducted hazard identification,cataloging,mapping,analysis,and assessment of active landslides in Zayu County using the integrated remote sensing(IRS)technique on the Google Earth platform.A total of 237 active landslide hazards were identified primarily along the Gongrigabuqu River(the western tributary of the Zayu River),Zayu River,both sides of the Nujiang River,and the eastern Zayu River to the western Nujiang River.As revealed by the statistical analysis of the interpretation results combined with quantitative factors such as topography(elevation,slope,lithology)and natural environment(rainfall,temperature),the landslides in Zuobu and Azha villages pose high disaster risks,necessitating further mitigation measures.With relatively accurate results,this study can serve as a reference for disaster prevention and mitigation in Zayu County.

integrated remote sensing(IRS)small baseline subset-interferometric synthetic aperture Radar(SBAS-InSAR)Zayu Countyactive landslidelandslide monitoring

蔡建澳、明冬萍、赵文祎、凌晓、张雨、张星星

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中国地质大学(北京)信息工程学院,北京 100083

深时数字地球前沿科学中心,北京 100083

中国地质环境监测院,北京 100081

综合遥感(IRS) 短基线集干涉合成孔径雷达(SBAS-InSAR) 察隅县 活动性滑坡 滑坡监测

国家重点研发计划项目课题国家自然科学基金项目中央高校基本科研业务费"深时数字地球前沿科学中心"深时数字地球"中央高校科技领军人才团队项目

2022YFB3903604423713792652023001

2024

10.6046/zrzyyg.2023313

自然资源遥感
中国国土资源航空物探遥感中心

自然资源遥感

CSTPCD北大核心
影响因子：1.275
ISSN：2097-034X
年,卷(期)：2024.36(1)
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