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Satellite SAR interferometry for the improved assessment of the state of activity of landslides: A case study from the Cordilleras of Peru
dc.contributor.author | Strozzi, Tazio | |
dc.contributor.author | Klimes, Jan | |
dc.contributor.author | Frey, Holger | |
dc.contributor.author | Caduff, Rafael | |
dc.contributor.author | Huggel, Christian | |
dc.contributor.author | Wegmüller, Urs | |
dc.contributor.author | Cochachin Rapre, Alejo | |
dc.date.accessioned | 2018-12-18T20:12:17Z | |
dc.date.available | 2018-12-18T20:12:17Z | |
dc.date.issued | 2018-11 | |
dc.identifier.citation | Strozzi, T., Klimes, J., Frey, H. et al. (2018) Satellite SAR interferometry for the improved assessment of the state of activity of landslides: A case study from the Cordilleras of Peru. Remote Sensing of Environment, 247, 111-125. doi: https://doi.org/10.1016/j.rse.2018.08.014 | es_PE |
dc.identifier.issn | ISSN: 0034-4257, ESSN: 1879-0704 | es_PE |
dc.identifier.uri | https://hdl.handle.net/20.500.12543/3147 | |
dc.description | Filiación institucional de autor: Alejo Cochachín Rapre / Autoridad Nacional del Agua - Unidad de Glaciología y Recursos Hídricos (ANA-UGRH), Huaraz, Peru | es_PE |
dc.description | Original abstract: In Peru landslides have been causing damages and casualties annually due to the high mountain relief and distinct seasonal precipitation distribution. Satellite Synthetic Aperture Radar (SAR) interferometry represents one possibility for mapping surface deformation at fine spatial resolution over large areas in order to characterize aspects of terrain motion and potentially hazardous processes. We present land surface motion maps derived from satellite SAR interferometry (InSAR) for a part of the Santa River Basin between the Cordilleras Blanca and Negra around the city of Carhuaz in Peru. Using both Persistent Scatterer Interferometry (PSI) and differential SAR Interferograms (DInSAR) from ALOS-1 PALSAR-1, ENVISAT ASAR, ALOS-2 PALSAR-2 and Sentinel-1 we mapped 42 landslides extending over 17,190,141¿m2 within three classes of activity (i.e. 0–2¿cm/a, 2–10¿cm/a and >10¿cm/a). A geomorphological inventory of landslides was prepared from optical satellite imagery and field experience and compared to the InSAR-based slope-instability inventory. The two approaches provide slightly different information about landslide spatial and temporal activity patterns, but altogether they can be combined for the assessment of the state of activity of landslides and possibly the development of hazard maps, which are not systematically available in this region. We conclude that ALOS PALSAR (1 and 2) and Sentinel-1 data have a high potential to derive high-quality surface deformation information of landslides in many mountainous regions worldwide due to their global and frequent acquisition strategies. | es_PE |
dc.description | info:eu-repo/semantics/closedAccess | es_PE |
dc.description.abstract | Señala que los deslizamientos de tierra han estado causando daños y víctimas cada año en el Perú, debido al relieve de alta montaña y la distribución de la precipitación estacional. En este contexto, la interferometría del radar de apertura sintética satelital (SAR) representa una posibilidad para mapear la deformación de la superficie con una resolución espacial fina en grandes áreas con el fin caracterizar aspectos del movimiento del terreno y procesos potencialmente peligrosos. Asimismo presenta mapas de movimiento de la superficie terrestre derivados de la interferometría satelital SAR (InSAR) para una parte de la cuenca del río Santa, y menciona la preparación de un inventario geomorfológico de deslizamientos a partir de imágenes de satélites ópticos y experiencia de campo y su comparación con el inventario de inestabilidad de pendiente basado en InSAR. | es_PE |
dc.format | application/pdf | es_PE |
dc.language.iso | eng | es_PE |
dc.publisher | Elsevier | es_PE |
dc.relation.ispartofseries | Remote Sensing of Environment, November 2018, Volume 217, pp 111-125 | es_PE |
dc.relation.uri | https://doi.org/10.1016/j.rse.2018.08.014 | |
dc.rights | info:eu-repo/semantics/closedAccess | es_PE |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.source | Autoridad Nacional del Agua | es_PE |
dc.source | Repositorio institucional - ANA | es_PE |
dc.subject | Comportamiento de eventos extremos de origen glaciar y climático | es_PE |
dc.subject | Gestión de riesgos de desastres en recursos hídricos | es_PE |
dc.subject | Monitoreo de lagunas y glaciares | es_PE |
dc.title | Satellite SAR interferometry for the improved assessment of the state of activity of landslides: A case study from the Cordilleras of Peru | es_PE |
dc.type | info:eu-repo/semantics/article | es_PE |
dc.identifier.doi | https://doi.org/10.1016/j.rse.2018.08.014 | es_PE |
dc.coverage.basin | Cuenca Santa |