{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T23:40:33Z","timestamp":1768347633514,"version":"3.49.0"},"reference-count":42,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2023,3,12]],"date-time":"2023-03-12T00:00:00Z","timestamp":1678579200000},"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>A reliable road network is a vital local asset, connecting communities and unlocking economic growth. Every year landslides cause serious damage and, in some cases, the full disruption of many road networks, which can last from a few days to even months. The identification and monitoring of landslides with conventional methods on an extended and complex road network can be a rather difficult process, as it requires a significant amount of time and resources. The road network of the Chania regional unit on the island of Crete in Greece is a typical example, as it connects, over long distances, many remote mountainous villages with other local communities, as well as with the main urban centers, which are mainly located across the shore. Persistent scatterer interferometry (PSI) is a remote-sensing technique that can provide a reliable and cost-effective solution, as it can be used to identify and monitor slow-moving and ongoing landslides over large and complex areas such as those of the mountainous road networks. This study applied PSI in the Chania regional unit, using the novel parallelized PSI (P-PSI) processing chain, developed by the Operational Unit Center for Earth Observation Research and Satellite Remote Sensing BEYOND of the Institute of Astronomy and Astrophysics, Space Applications and Remote Sensing of the National Observatory of Athens (BEYOND) for the rapid identification of the areas, most critical to landslide in a local road network. The application of P-PSI speeded up the total required processing time by a factor of five and led to the rapid identification and monitoring of 235 new slow-moving landslides. The identified landslides were correlated with a pre-existing landslide inventory and open access visual data to create a complete landslide inventory and a relative landslide inventory map, thus offering a valuable tool to local stakeholders.<\/jats:p>","DOI":"10.3390\/rs15061550","type":"journal-article","created":{"date-parts":[[2023,3,13]],"date-time":"2023-03-13T03:03:57Z","timestamp":1678676637000},"page":"1550","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Persistent Scatterer Interferometry (PSI) Technique for the Identification and Monitoring of Critical Landslide Areas in a Regional and Mountainous Road Network"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2075-4112","authenticated-orcid":false,"given":"Constantinos","family":"Nefros","sequence":"first","affiliation":[{"name":"School of Mining and Metallurgical Engineering, National Technical University of Athens, 15780 Athens, Greece"}]},{"given":"Stavroula","family":"Alatza","sequence":"additional","affiliation":[{"name":"Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, Center for Earth Observation Research and Satellite Remote Sensing BEYOND, National Observatory of Athens, 15780 Athens, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1822-6510","authenticated-orcid":false,"given":"Constantinos","family":"Loupasakis","sequence":"additional","affiliation":[{"name":"School of Mining and Metallurgical Engineering, National Technical University of Athens, 15780 Athens, Greece"}]},{"given":"Charalampos","family":"Kontoes","sequence":"additional","affiliation":[{"name":"Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, Center for Earth Observation Research and Satellite Remote Sensing BEYOND, National Observatory of Athens, 15780 Athens, Greece"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1443","DOI":"10.1016\/j.trpro.2016.05.217","article-title":"The Roads\u2019 Role in the Freight Transport System","volume":"14","year":"2016","journal-title":"Transp. Res. Procedia"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"012070","DOI":"10.1088\/1757-899X\/786\/1\/012070","article-title":"Road Safety as a Factor in the Socio-Economic Development of the Country","volume":"786","author":"Nikolaeva","year":"2020","journal-title":"IOP Conf. Ser. Mater. Sci. Eng."},{"key":"ref_3","first-page":"263","article-title":"Importance of road infrastructure in the economic development and competitiveness","volume":"18","year":"2013","journal-title":"Econ. Manag."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"31","DOI":"10.5296\/iss.v8i1.17067","article-title":"Perceived Role of Rural Roads in Supporting and Enhancing Rural and Agricultural Development in Mwanza Region, Tanzania","volume":"8","author":"Kongolo","year":"2020","journal-title":"Issues Soc. Sci."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1002\/j.2158-1592.2006.tb00224.x","article-title":"Life without trucks: The impact of a temporary disruption of road freight transport on a national economy","volume":"27","author":"McKinnon","year":"2006","journal-title":"J. Bus. Logist."},{"key":"ref_6","first-page":"1083","article-title":"Speed Management in Rural Roads in Greece","volume":"6","author":"Psarianos","year":"2012","journal-title":"J. Civ. Eng. Archit."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Valkaniotis, S., Papathanassiou, G., Marinos, V., Saroglou, C., Zekkos, D., Kallimogiannis, V., Karantanellis, E., Farmakis, I., Zalachoris, G., and Manousakis, J. (2022). Landslides Triggered by Medicane Ianos in Greece, September 2020: Rapid Satellite Mapping and Field Survey. Appl. Sci., 12.","DOI":"10.3390\/app122312443"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1002\/esp.1064","article-title":"Landslide Inventories and Their Statistical Properties","volume":"29","author":"Malamud","year":"2004","journal-title":"Earth Surf. Process Landf."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2129","DOI":"10.1007\/s10346-018-1024-y","article-title":"Implementing Landslide Path Dependency in Landslide Susceptibility Modelling","volume":"15","author":"Samia","year":"2018","journal-title":"Landslides"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"68","DOI":"10.12681\/bgsg.29038","article-title":"Introducing a Geospatial Database and GIS Techniques as a Decision-Making Tool for Multicriteria Decision Analysis Methods in Landslides Susceptibility Assessment","volume":"59","author":"Nefros","year":"2022","journal-title":"Bull. Geol. Soc. Greece"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1007\/s10064-005-0023-0","article-title":"Landslide Hazard and Risk Zonation\u2014Why Is It Still so Difficult?","volume":"65","author":"Soeters","year":"2006","journal-title":"Bull. Eng. Geol. Environ."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Aslan, G., Foumelis, M., Raucoules, D., de Michele, M., Bernardie, S., and Cakir, Z. (2020). Landslide Mapping and Monitoring Using Persistent Scatterer Interferometry (PSI) Technique in the French Alps. Remote Sens., 12.","DOI":"10.3390\/rs12081305"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1016\/j.isprsjprs.2015.10.011","article-title":"Persistent Scatterer Interferometry: A Review","volume":"115","author":"Crosetto","year":"2016","journal-title":"ISPRS J. Photogramm. Remote Sens."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1016\/j.enggeo.2016.05.017","article-title":"Land Subsidence Rebound Detected via Multi-Temporal InSAR and Ground Truth Data in Kalochori and Sindos Regions, Northern Greece","volume":"209","author":"Nikos","year":"2016","journal-title":"Eng. Geol."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Papoutsis, I., Kontoes, C., and Paradissis, D. (2017). Multi-Stack Persistent Scatterer Interferometry Analysis in Wider Athens, Greece. Remote Sens., 9.","DOI":"10.3390\/rs9030276"},{"key":"ref_16","unstructured":"Pasquali, P., Cantone, A., Riccardi, P., Defilippi, M., Ogushi, F., Gagliano, S., and Tamura, M. (2014). Land Applications of Radar Remote Sensing, InTech."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"D\u2019Aranno, P.J.V., di Benedetto, A., Fiani, M., Marsella, M., Moriero, I., and Palenzuela Baena, J.A. (2021). An Application of Persistent Scatterer Interferometry (PSI) Technique for Infrastructure Monitoring. Remote Sens., 13.","DOI":"10.3390\/rs13061052"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1109\/36.898661","article-title":"Permanent Scatterers in SAR Interferometry","volume":"39","author":"Ferretti","year":"2001","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"104707","DOI":"10.1016\/j.autcon.2022.104707","article-title":"Satellite-Based Interferometry for Monitoring Structural Deformations of Bridge Portfolios","volume":"147","author":"Nettis","year":"2023","journal-title":"Autom. Constr."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1849","DOI":"10.1177\/14759217211045912","article-title":"Monitoring Deformations of Infrastructure Networks: A Fully Automated GIS Integration and Analysis of InSAR Time-Series","volume":"21","author":"Macchiarulo","year":"2022","journal-title":"Struct. Health Monit."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Papoutsis, I., Kontoes, C., Alatza, S., Apostolakis, A., and Loupasakis, C. (2020). InSAR Greece with Parallelized Persistent Scatterer Interferometry: A National Ground Motion Service for Big Copernicus Sentinel-1 Data. Remote Sens., 12.","DOI":"10.3390\/rs12193207"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Nefros, C., Tsagkas, D.S., Kitsara, G., Loupasakis, C., and Giannakopoulos, C. (2023). Landslide Susceptibility Mapping under the Climate Change Impact in the Chania Regional Unit, West Crete, Greece. Land, 12.","DOI":"10.3390\/land12010154"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1002\/2014EO260003","article-title":"Sentinel Satellites Initiate New Era in Earth Observation","volume":"95","author":"Showstack","year":"2014","journal-title":"Eos Trans. Am. Geophys. Union"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Attema, E., Snoeij, P., Davidson, M., Floury, N., Levrini, G., Rommen, B., and Rosich, B. (2008, January 6\u201311). The European GMES Sentinel-1 Radar Mission. Proceedings of the IGARSS 2008\u20142008 IEEE International Geoscience and Remote Sensing Symposium, Boston, MA, USA.","DOI":"10.1109\/IGARSS.2008.4778801"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.isprsjprs.2022.04.022","article-title":"Nation-Wide Mapping and Classification of Ground Deformation Phenomena through the Spatial Clustering of P-SBAS InSAR Measurements: Italy Case Study","volume":"189","author":"Festa","year":"2022","journal-title":"ISPRS J. Photogramm. Remote Sens."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Psomiadis, E., Papazachariou, A., Soulis, K., Alexiou, D.-S., and Charalampopoulos, I. (2020). Landslide Mapping and Susceptibility Assessment Using Geospatial Analysis and Earth Observation Data. Land, 9.","DOI":"10.3390\/land9050133"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1016\/j.tecto.2010.06.012","article-title":"Crustal Deformation Associated with East Mediterranean Strike\u2013Slip Earthquakes: The 8 June 2008 Movri (NW Peloponnese), Greece, Earthquake (Mw6.4)","volume":"492","author":"Papadopoulos","year":"2010","journal-title":"Tectonophysics"},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Kontoes, C., Loupasakis, C., Papoutsis, I., Alatza, S., Poyiadji, E., Ganas, A., Psychogyiou, C., Kaskara, M., Antoniadi, S., and Spanou, N. (2021). Landslide Susceptibility Mapping of Central and Western Greece, Combining NGI and WoE Methods, with Remote Sensing and Ground Truth Data. Land, 10.","DOI":"10.3390\/land10040402"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1080\/17445647.2013.852142","article-title":"Landslide Inventory Map of North-Eastern Calabria (South Italy)","volume":"10","author":"Conforti","year":"2014","journal-title":"J. Maps"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"B07407","DOI":"10.1029\/2006JB004763","article-title":"Persistent Scatterer Interferometric Synthetic Aperture Radar for Crustal Deformation Analysis, with Application to Volc\u00e1n Alcedo, Gal\u00e1pagos","volume":"112","author":"Hooper","year":"2007","journal-title":"J. Geophys. Res."},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Wang, T., Zhang, H., Yang, L., Dempster, A.G., Su, C., and Li, K. (2013, January 21\u201326). Landslide Monitoring System Based on Spread-Spectrum Continuous Wave Radar. Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium\u2014IGARSS, Melbourne, Australia.","DOI":"10.1109\/IGARSS.2013.6723847"},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Alatza, S., Papoutsis, I., Paradissis, D., Kontoes, C., and Papadopoulos, G.A. (2020). Multi-Temporal InSAR Analysis for Monitoring Ground Deformation in Amorgos Island, Greece. Sensors, 20.","DOI":"10.3390\/s20020338"},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Hu, Z., and Mallorqu\u00ed, J.J. (2019). An Accurate Method to Correct Atmospheric Phase Delay for InSAR with the ERA5 Global Atmospheric Model. Remote Sens., 11.","DOI":"10.3390\/rs11171969"},{"key":"ref_34","unstructured":"Google (n.d.) (2023, January 27). [Google Earth Satellite View, Askifou Village]. Available online: https:\/\/www.shorturl.at\/RTXZ1."},{"key":"ref_35","unstructured":"(2022, December 31). Traffic Interruption Due to Rockslides from Machairos to Ramni, Online News of Chania. Available online: https:\/\/www.haniotika-nea.gr\/diakopi-kykloforias-logo-katolisthiseon-vrachon-apo-machairoys-eos-ramni\/."},{"key":"ref_36","unstructured":"Google (n.d.) (2022, December 31). [Google Satellite View, Regional Road from Macheri to Ramni]. Available online: https:\/\/www.shorturl.at\/DJNX2."},{"key":"ref_37","unstructured":"Google (n.d.) (2022, December 31). [Google Street View, Regional Road from Tavronitis to Paleochora, October 2014]. Available online: https:\/\/goo.gl\/maps\/cF76BSPmk4LHKQ9GA."},{"key":"ref_38","unstructured":"Google (n.d.) (2022, December 31). [Google Street View, Regional Road from Tavronitis to Paleochora, May 2019]. Available online: https:\/\/goo.gl\/maps\/odC3V1YoBqAWMWQWA."},{"key":"ref_39","unstructured":"Google (n.d.) (2022, December 31). [Google Earth Satellite View at Stalos Village Jun 2013]. Available online: https:\/\/shorturl.at\/kwL34."},{"key":"ref_40","unstructured":"Google (n.d.) (2022, December 31). [Google Earth Satellite View at Stalos Village May 2022]. Available online: https:\/\/shorturl.at\/ciBNO."},{"key":"ref_41","unstructured":"Google (n.d.) (2022, December 31). [Google Street View, Motorway Outside Stalos Village, May 2019]. Available online: https:\/\/www.shorturl.at\/GHZ17."},{"key":"ref_42","unstructured":"Mapillary (n.d.) (2022, December 31). [Mapillary Street View, Motorway Outside Stalos Village, Aug 2022]. Available online: https:\/\/rb.gy\/ktzz0a."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/6\/1550\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:53:11Z","timestamp":1760122391000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/6\/1550"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,3,12]]},"references-count":42,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2023,3]]}},"alternative-id":["rs15061550"],"URL":"https:\/\/doi.org\/10.3390\/rs15061550","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,3,12]]}}}