A Methodology to Detect and Update Active Deformation Areas Based on Sentinel-1 SAR Images

Remote Sensing

Michele Crosetto¹  Anna Barra¹  Oriol Monserrat¹  Carmen López²  Sergio Ligüerzana²  Elena González-Alonso²  Silvia Bianchini³  Sandro Moretti³  Lorenzo Solari³  Marta Béjar-Pizarro⁴  Gerardo Herrera⁴  Roberto Sarro⁴  Rosa María Mateos⁵ 

[1] Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Geomatics Division, 08860 Castelldefels, Spain;Centro Nacional de Información Geográfica, Instituto Geográfico Nacional, C/General Ibáñez de Ibero, 3, 28003 Madrid, Spain;Earth Sciences Department, University of Firenze, Via La Pira, 4, I-50121 Firenze, Italy;Geohazards InSAR Laboratory and Modeling Group (InSARlab), Geoscience Research Department, Geological Survey of Spain (IGME), Alenza 1, 28003 Madrid, Spain;Geological Survey of Spain (IGME), Urb. Alcázar del Genil, 4-Edif. Bajo, 18006 Granada, Spain;

关键词: SAR;    DInSAR;    deformation;    measurement;    landslide;    subsidence;    risk management;   

DOI  :  10.3390/rs9101002

来源: DOAJ

【 摘 要 】

This work is focused on deformation activity mapping and monitoring using Sentinel-1 (S-1) data and the DInSAR (Differential Interferometric Synthetic Aperture Radar) technique. The main goal is to present a procedure to periodically update and assess the geohazard activity (volcanic activity, landslides and ground-subsidence) of a given area by exploiting the wide area coverage and the high coherence and temporal sampling (revisit time up to six days) provided by the S-1 satellites. The main products of the procedure are two updatable maps: the deformation activity map and the active deformation areas map. These maps present two different levels of information aimed at different levels of geohazard risk management, from a very simplified level of information to the classical deformation map based on SAR interferometry. The methodology has been successfully applied to La Gomera, Tenerife and Gran Canaria Islands (Canary Island archipelago). The main obtained results are discussed.

【 授权许可】

Unknown