{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,4]],"date-time":"2026-02-04T19:20:19Z","timestamp":1770232819800,"version":"3.49.0"},"reference-count":67,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2021,10,10]],"date-time":"2021-10-10T00:00:00Z","timestamp":1633824000000},"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>Exploration of territories not previously analyzed by landslide experts provides interesting findings. The Chgega landslide, in northern Tunisia, represents a paradigmatic mass movement. It can be classified as a complex landslide, or more specifically as vast rock spreading that evolved into a block slide. It involves a great block of limestone\u2014about 900 m long and 400 m wide\u2014sliding over ductile clays and marls. The viscoplastic creep of the clays drives the landslide and creates, in its crown, a graben ~800 m long and ~120 m wide that breaks the summit of Chgega Mountain. Using Interferometric Synthetic Aperture Radar (InSAR) technologies, we demonstrate that this complex landslide is currently active and moreover shows progressive movement without clear episodic accelerations. The velocity of the limestone block is just above 2 mm\/yr. The occurrence of gravity-induced joints indicates that the movement has an orientation towards 333\u00b0 of azimuth on average, conditioned by the landscape around Chgega. These results were obtained through the analysis of a 3D model and a high-resolution orthoimage created from photographs acquired by an Uncrewed Aerial Vehicle (UAV). We may conclude that the landslide movement is determined by normal faults with directions N060\u00b0E and N140\u2013150\u00b0E. This characterization of the Chgega landslide can serve as the basis for future studies about the origin of this slope movement. Furthermore, the data provided here may support the recognition of Chgega as a singular geological point that deserves to be declared a geosite.<\/jats:p>","DOI":"10.3390\/rs13204048","type":"journal-article","created":{"date-parts":[[2021,10,10]],"date-time":"2021-10-10T21:37:49Z","timestamp":1633901869000},"page":"4048","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Analysis of the Geological Controls and Kinematics of the Chgega Landslide (Mateur, Tunisia) Exploiting Photogrammetry and InSAR Technologies"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1996-1392","authenticated-orcid":false,"given":"Seifeddine","family":"Gaidi","sequence":"first","affiliation":[{"name":"Facult\u00e9 des Sciences de Tunis, Universit\u00e9 de Tunis El Manar, Tunis 1068, Tunisia"},{"name":"Departamento de Geodin\u00e1mica, Universidad de Granada, 18071 Granada, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5780-821X","authenticated-orcid":false,"given":"Jorge Pedro","family":"Galve","sequence":"additional","affiliation":[{"name":"Departamento de Geodin\u00e1mica, Universidad de Granada, 18071 Granada, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1047-2162","authenticated-orcid":false,"given":"Fetheddine","family":"Melki","sequence":"additional","affiliation":[{"name":"Facult\u00e9 des Sciences de Tunis, Universit\u00e9 de Tunis El Manar, Tunis 1068, Tunisia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3833-4973","authenticated-orcid":false,"given":"Patricia","family":"Ruano","sequence":"additional","affiliation":[{"name":"Departamento de Geodin\u00e1mica, Universidad de Granada, 18071 Granada, Spain"},{"name":"CISC-UGR, Instituto Andaluz de Ciencias de la Tierra (IACT), 18100 Armilla, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8325-4350","authenticated-orcid":false,"given":"Cristina","family":"Reyes-Carmona","sequence":"additional","affiliation":[{"name":"Departamento de Geodin\u00e1mica, Universidad de Granada, 18071 Granada, Spain"},{"name":"Geohazards InSAR Laboratory and Modelling Group (InSARlab), Geoscience Research Department, Geological Survey of Spain (IGME), 28003 Madrid, Spain"}]},{"given":"Wissem","family":"Marzougui","sequence":"additional","affiliation":[{"name":"Office National des Mines, Tunis 2035, Tunisia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1804-9887","authenticated-orcid":false,"given":"Stefano","family":"Devoto","sequence":"additional","affiliation":[{"name":"Department of Mathematics and Geosciences, University of Trieste, via Weiss 2, 34127 Trieste, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8880-7375","authenticated-orcid":false,"given":"Jos\u00e9 Vicente","family":"P\u00e9rez-Pe\u00f1a","sequence":"additional","affiliation":[{"name":"Departamento de Geodin\u00e1mica, Universidad de Granada, 18071 Granada, Spain"},{"name":"Instituto Andaluz de Geof\u00edsica (IAG), Universidad de Granada, 18071 Granada, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7834-5816","authenticated-orcid":false,"given":"Jos\u00e9 Miguel","family":"Aza\u00f1\u00f3n","sequence":"additional","affiliation":[{"name":"Departamento de Geodin\u00e1mica, Universidad de Granada, 18071 Granada, Spain"},{"name":"Instituto Andaluz de Geof\u00edsica (IAG), Universidad de Granada, 18071 Granada, Spain"}]},{"given":"Haifa","family":"Chouaieb","sequence":"additional","affiliation":[{"name":"Office National des Mines, Tunis 2035, Tunisia"}]},{"given":"Fouad","family":"Zargouni","sequence":"additional","affiliation":[{"name":"Facult\u00e9 des Sciences de Tunis, Universit\u00e9 de Tunis El Manar, Tunis 1068, Tunisia"}]},{"given":"Guillermo","family":"Booth-Rea","sequence":"additional","affiliation":[{"name":"Departamento de Geodin\u00e1mica, Universidad de Granada, 18071 Granada, Spain"},{"name":"CISC-UGR, Instituto Andaluz de Ciencias de la Tierra (IACT), 18100 Armilla, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1038\/s41598-021-89899-6","article-title":"Transient motion of the largest landslide on earth, modulated by hydrological forces","volume":"11","author":"Aslan","year":"2021","journal-title":"Sci. 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