{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T05:10:17Z","timestamp":1774933817028,"version":"3.50.1"},"reference-count":65,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2021,7,8]],"date-time":"2021-07-08T00:00:00Z","timestamp":1625702400000},"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>The unexpected collapse of land surface due to subsidence is one of the most significant geohazards that threatens human life and infrastructure. Kabudrahang and Famenin are two Iranian plains experiencing several sinkholes due to the characteristics of the underground soil layers and extreme groundwater depletion. In this study, space-based Synthetic Aperture Radar images are used to investigate the ground displacement behavior to examine the feasibility of Sentinel-1 data in detecting precursory deformation proceeding before the sinkhole formation. The selected sinkhole occurred in August 2018 in the vicinity of Kerdabad village in Hamedan province with a 40 m diameter and depth of ~40 m. Time series of the European constellation Sentinel-1 data, spanning from January 2015 to August 2018, is analyzed, and the results revealed a 3 cm annual subsidence (\u20133 cm\/year) along with the line-of-sight direction. Time-series analysis demonstrated that the driving mechanism of the sinkhole formation had a gradual process. Displacement of persistent scatterers (PSs) near the cave area had an acceleration by approaching the sinkhole formation date. In contrast, other areas that are far from the cave area show linear subsidence behavior over time. Additionally, the one-kilometer deformation profile over the cave area indicates a high subsidence rate precisely at the location where the sinkhole was formed later on 20 August 2018.<\/jats:p>","DOI":"10.3390\/rs13142696","type":"journal-article","created":{"date-parts":[[2021,7,8]],"date-time":"2021-07-08T10:42:17Z","timestamp":1625740937000},"page":"2696","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Analysis of the Deformation Behavior and Sinkhole Risk in Kerdabad, Iran Using the PS-InSAR Method"],"prefix":"10.3390","volume":"13","author":[{"given":"Mahdi","family":"Khoshlahjeh Azar","sequence":"first","affiliation":[{"name":"Photogrammetry and Remote Sensing Department, Geomatics Engineering Faculty, K.N. Toosi University of Technology, Tehran 15433-19967, Iran"}]},{"given":"Amir","family":"Hamedpour","sequence":"additional","affiliation":[{"name":"Faculty of Environmental and Forest Sciences, Agricultural University of Iceland, Hvanneyri, IS-311 Borgarnes, Iceland"},{"name":"Svarmi, Data Company Specialized in Remote Sensing and Drones, \u00c1rleyni 22, IS-112 Reykjav\u00edk, Iceland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2731-9057","authenticated-orcid":false,"given":"Yasser","family":"Maghsoudi","sequence":"additional","affiliation":[{"name":"Photogrammetry and Remote Sensing Department, Geomatics Engineering Faculty, K.N. Toosi University of Technology, Tehran 15433-19967, Iran"},{"name":"COMET, School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK"}]},{"given":"Daniele","family":"Perissin","sequence":"additional","affiliation":[{"name":"RASER Limited, Radar and Software Engineering Research Company, 9 Wing Hong St, Cheung Sha Wan, Hong Kong, China"}]}],"member":"1968","published-online":{"date-parts":[[2021,7,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Guti\u00e9rrez, F. (2010). 13 Hazards associated with karst. 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