Multi-sensor advanced DInSAR monitoring of very slow landslides

Presenter: Yu-Heng Tai    Adviser: Chung-Pai Chang

Abstract

We explore new possibilities offered by the recently available X-band and L-band satellite radar sensors for landslide hazard assessments, with particular reference to the exploitation of Persistent Scatterers Interferometry (PSI) techniques. ALOS PALSAR images, ERS & Envisat, and TerraSAR-X datasets has provided heterogeneous displacement velocity measurements. Special attention is paid to the impact of the improved resolution of new X- band radar imagery on the PSI results. This implies more information about ground surface displacements as well as improved landslide monitoring and slope instability investigation capabilities. L-Band has the potential of penetrating through leaves, trees, etc., so we can use this feature to get realistic ground motion in vegetation area. Combining result from different sensors helps us to find most landslides recorded by previous study. According to available measurements, damages caused by different velocity of landslide could be expected.

References

F. Bovenga, J. Wasowski, D.O. Nitti, R. Nutricato, M.T. Chiaradia., 2012. Using COSMO/SkyMed X-band and ENVISAT C-band SAR interferometry for landslides analysis. Remote Sensing of Environment, 119, 272–285.

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 G. Herrera, F. Gutiérrez, J.C. García-Davalillo, J. Guerrero, D. Notti, J.P. Galve, J.A. Fernández-Merodo, G. Cooksley, 2013. Multi-sensor advanced DInSAR monitoring of very slow landslides: The Tena Valley case study (Central Spanish Pyrenees), Multi-sensor advanced DInSAR monitoring of very slow landslides: The Tena Valley case study (Central Spanish Pyrenees), Remote Sensing of Environment, 128, 31–43.

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