Advances on the investigation of landslides by space-borne synthetic aperture radar interferometry

IF 4.4 1区 地球科学 Q1 REMOTE SENSING Geo-spatial Information Science Pub Date : 2023-11-07 DOI:10.1080/10095020.2023.2266224
Roberto Tomás, Qiming Zeng, Juan M. Lopez-Sanchez, Chaoying Zhao, Zhenhong Li, Xiaojie Liu, María I. Navarro-Hernández, Liuru Hu, Jiayin Luo, Esteban Díaz, William T. Szeibert, José Luis Pastor, Adrián Riquelme, Chen Yu, Miguel Cano
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Abstract

Landslides are destructive geohazards to people and infrastructure, resulting in hundreds of deaths and billions of dollars of damage every year. Therefore, mapping the rate of deformation of such geohazards and understanding their mechanics is of paramount importance to mitigate the resulting impacts and properly manage the associated risks. In this paper, the main outcomes relevant to the joint European Space Agency (ESA) and the Chinese Ministry of Science and Technology (MOST) Dragon-5 initiative cooperation project ID 59,339 “Earth observation for seismic hazard assessment and landslide early warning system” are reported. The primary goals of the project are to further develop advanced SAR/InSAR and optical techniques to investigate seismic hazards and risks, detect potential landslides in wide regions, and demonstrate EO-based landslide early warning system over selected landslides. This work only focuses on the landslide hazard content of the project, and thus, in order to achieve these objectives, the following tasks were developed up to now: a) a procedure for phase unwrapping errors and tropospheric delay correction; b) an improvement of a cross-platform SAR offset tracking method for the retrieval of long-term ground displacements; c) the application of polarimetric SAR interferometry (PolInSAR) to increase the number and quality of monitoring points in landslide-prone areas; d) the semiautomatic mapping and preliminary classification of active displacement areas on wide regions; e) the modeling and identification of landslides in order to identify triggering factors or predict future displacements; and f) the application of an InSAR-based landslide early warning system on a selected site. The achieved results, which mainly focus on specific sensitive regions, provide essential assets for planning present and future scientific activities devoted to identifying, mapping, characterizing, monitoring and predicting landslides, as well as for the implementation of early warning systems.
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星载合成孔径雷达干涉测量滑坡研究进展
山体滑坡是对人类和基础设施的破坏性地质灾害,每年造成数百人死亡和数十亿美元的损失。因此,绘制此类地质灾害的变形速率并了解其机制对于减轻由此产生的影响和适当管理相关风险至关重要。本文报告了欧洲航天局(ESA)与中国科技部(MOST)龙-5联合合作项目ID 59,339“地球观测用于地震灾害评估和滑坡预警系统”的主要成果。该项目的主要目标是进一步发展先进的SAR/InSAR和光学技术,以调查地震灾害和风险,探测大范围潜在的滑坡,并在选定的滑坡中演示基于eo的滑坡预警系统。这项工作只关注项目的滑坡危害内容,因此,为了实现这些目标,到目前为止,开发了以下任务:a)相位展开误差和对流层延迟校正程序;b)改进跨平台SAR偏移跟踪方法,用于检索长期地面位移;c)应用偏振SAR干涉测量技术(PolInSAR),在易发生山泥倾泻的地区增加监测点的数目和质素;D)大范围活动位移区的半自动制图和初步分类;E)模拟和识别滑坡,以确定触发因素或预测未来的位移;f)基于insar的滑坡预警系统在选定地点的应用。所取得的成果主要集中在具体的敏感区域,为规划目前和未来的科学活动提供了重要的资产,这些活动专门用于查明、绘制地图、描述、监测和预测滑坡,并为实施早期预警系统提供了宝贵的资产。
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来源期刊
CiteScore
10.10
自引率
28.30%
发文量
710
审稿时长
31 weeks
期刊介绍: Geo-spatial Information Science was founded in 1998 by Wuhan University, and is now published in partnership with Taylor & Francis. The journal publishes high quality research on the application and development of surveying and mapping technology, including photogrammetry, remote sensing, geographical information systems, cartography, engineering surveying, GPS, geodesy, geomatics, geophysics, and other related fields. The journal particularly encourages papers on innovative applications and theories in the fields above, or of an interdisciplinary nature. In addition to serving as a source reference and archive of advancements in these disciplines, Geo-spatial Information Science aims to provide a platform for communication between researchers and professionals concerned with the topics above. The editorial committee of the journal consists of 21 professors and research scientists from different regions and countries, such as America, Germany, Switzerland, Austria, Hong Kong and China.
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