Articles | Volume 11, issue 3
https://doi.org/10.5194/esurf-11-451-2023
https://doi.org/10.5194/esurf-11-451-2023
Short communication
 | 
11 May 2023
Short communication |  | 11 May 2023

Short communication: Potential of Sentinel-1 interferometric synthetic aperture radar (InSAR) and offset tracking in monitoring post-cyclonic landslide activities on Réunion

Marcello de Michele, Daniel Raucoules, Claire Rault, Bertrand Aunay, and Michael Foumelis

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This preprint is open for discussion and under review for Natural Hazards and Earth System Sciences (NHESS).
Short summary

Cited articles

Aslan, G., Foumelis, M., Raucoules, D., De Michele, M., Bernardie, S., and Cakir, Z.: Landslide Mapping and Monitoring Using Persistent Scatterer Interferometry (PSI) Technique in the French Alps, Remote Sens., 12, 1305, https://doi.org/10.3390/rs12081305, 2020. 
Belle, P., Aunay B., Bernardie, S., Grandjean, G., Ladouche, B., Mazué, R., and Join, J.-L.: The application of an innovative inverse model for understanding and predicting landslide movements (Salazie cirque landslides, Reunion Island), Landslides, 11, 343–355, 2014. 
Copernicus: Welcome to the Copernicus Open Access Hub, https://scihub.copernicus.eu/ (last access: 28 March 2023), 2023. 
Costantini, M.: A novel phase unwrapping method based on network programming, IEEE T. Geosci. Remote, 36, 813–821, 1998.  
Delacourt, C., Raucoules, D., Le Mouélic, S., Carnec, C., Feurer, D., Allemand, P., and Cruchet, M.: Observation of a Large Landslide on La Reunion Island Using Differential Sar Interferometry (JERS and Radarsat) and Correlation of Optical (Spot5 and Aerial) Images, Sensors, 9, 616–630, 2009. 
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Short summary
Landslide processes are causes of major concern to population and infrastructures on Réunion. In this study, we used data from the Copernicus Sentinel-1 satellite to map ground motion in Cirque de Salazie. We concentrate on the cyclonic season 2017–2018. Our results show ground motion in the Hell-Bourg, Ilet à Vidot, Grand-Ilet, Camp Pierrot, and Le Bélier landslides. Moreover, we show an unknown pattern of ground motion situated in a non-instrumented, uninhabited area on the ground.
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