{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T18:22:02Z","timestamp":1777486922092,"version":"3.51.4"},"reference-count":41,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2017,9,28]],"date-time":"2017-09-28T00:00:00Z","timestamp":1506556800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>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.<\/jats:p>","DOI":"10.3390\/rs9101002","type":"journal-article","created":{"date-parts":[[2017,9,28]],"date-time":"2017-09-28T11:22:44Z","timestamp":1506597764000},"page":"1002","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":139,"title":["A Methodology to Detect and Update Active Deformation Areas Based on Sentinel-1 SAR Images"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6254-7931","authenticated-orcid":false,"given":"Anna","family":"Barra","sequence":"first","affiliation":[{"name":"Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC\/CERCA), Geomatics Division, 08860 Castelldefels, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3637-2669","authenticated-orcid":false,"given":"Lorenzo","family":"Solari","sequence":"additional","affiliation":[{"name":"Earth Sciences Department, University of Firenze, Via La Pira, 4, I-50121 Firenze, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7449-4048","authenticated-orcid":false,"given":"Marta","family":"B\u00e9jar-Pizarro","sequence":"additional","affiliation":[{"name":"Geohazards InSAR Laboratory and Modeling Group (InSARlab), Geoscience Research Department, Geological Survey of Spain (IGME), Alenza 1, 28003 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2505-6855","authenticated-orcid":false,"given":"Oriol","family":"Monserrat","sequence":"additional","affiliation":[{"name":"Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC\/CERCA), Geomatics Division, 08860 Castelldefels, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2724-5641","authenticated-orcid":false,"given":"Silvia","family":"Bianchini","sequence":"additional","affiliation":[{"name":"Earth Sciences Department, University of Firenze, Via La Pira, 4, I-50121 Firenze, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6633-9184","authenticated-orcid":false,"given":"Gerardo","family":"Herrera","sequence":"additional","affiliation":[{"name":"Geohazards InSAR Laboratory and Modeling Group (InSARlab), Geoscience Research Department, Geological Survey of Spain (IGME), Alenza 1, 28003 Madrid, Spain"}]},{"given":"Michele","family":"Crosetto","sequence":"additional","affiliation":[{"name":"Centre Tecnol\u00f2gic de Telecomunicacions de Catalunya (CTTC\/CERCA), Geomatics Division, 08860 Castelldefels, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2083-1931","authenticated-orcid":false,"given":"Roberto","family":"Sarro","sequence":"additional","affiliation":[{"name":"Geohazards InSAR Laboratory and Modeling Group (InSARlab), Geoscience Research Department, Geological Survey of Spain (IGME), Alenza 1, 28003 Madrid, Spain"}]},{"given":"Elena","family":"Gonz\u00e1lez-Alonso","sequence":"additional","affiliation":[{"name":"Centro Nacional de Informaci\u00f3n Geogr\u00e1fica, Instituto Geogr\u00e1fico Nacional, C\/General Ib\u00e1\u00f1ez de Ibero, 3, 28003 Madrid, Spain"}]},{"given":"Rosa","family":"Mateos","sequence":"additional","affiliation":[{"name":"Geological Survey of Spain (IGME), Urb. Alc\u00e1zar del Genil, 4-Edif. Bajo, 18006 Granada, Spain"}]},{"given":"Sergio","family":"Lig\u00fcerzana","sequence":"additional","affiliation":[{"name":"Centro Nacional de Informaci\u00f3n Geogr\u00e1fica, Instituto Geogr\u00e1fico Nacional, C\/General Ib\u00e1\u00f1ez de Ibero, 3, 28003 Madrid, Spain"}]},{"given":"Carmen","family":"L\u00f3pez","sequence":"additional","affiliation":[{"name":"Centro Nacional de Informaci\u00f3n Geogr\u00e1fica, Instituto Geogr\u00e1fico Nacional, C\/General Ib\u00e1\u00f1ez de Ibero, 3, 28003 Madrid, Spain"}]},{"given":"Sandro","family":"Moretti","sequence":"additional","affiliation":[{"name":"Earth Sciences Department, University of Firenze, Via La Pira, 4, I-50121 Firenze, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2017,9,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"9183","DOI":"10.1029\/JB094iB07p09183","article-title":"Mapping small elevation changes over large areas: Differential radar interferometry","volume":"94","author":"Gabriel","year":"1989","journal-title":"J. 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