Análisis de movimientos del terreno en Guayaquil (Ecuador) mediante G-POD (A-DInSAR)
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Abstract
En este trabajo ha sido realizado un análisis preliminar de movimientos del terreno en el área metropolitana de Guayaquil (Ecuador), mediante la aplicación de la técnica A-DInSAR. Para ello se procesaron imágenes SAR de Envisat ASAR entre febrero 2003 y agosto
2005 por medio del servicio gratuito G-POD. Los resultados permitieron identificar tres importantes zonas de deformación, con velocidades medias en la dirección suelo-satélite (LOS) que van desde
-19,2 hasta 10,1 mm/año. Además, las deformaciones acumuladas
se sitúan entre los 24 y 52 mm. Estos movimientos del terreno se relacionan con diferentes procesos geológicos: I) subsidencia urbana,
II) inundaciones y III) inestabilidades de ladera. Este estudio ilustra
la utilidad del servicio G-POD para realizar procesados A-DInSAR
como análisis preliminares de riesgos geológicos asociados a movimientos del terreno
In this work a ground movement preliminary analysis in the metropolitan area of Guayaquil (Ecuador) has been realised by means of the A-DInSAR technique. For this purpose, SAR images of Envisat ASAR were processed between February 2003 and August 2005 through the free G-POD service. The results allowed to identify three important deformation zones, with average line-of-sight (LOS) velocities ranging from -19.2 to 10.1 mm/year. In addition, the accumulated deformations are between 24 and 52 mm. These ground movements are related to different geological processes: I) urban subsidence, II) floods and III) slope instabilities. This study illustrates the usefulness of G-POD service for realise A-DInSAR processing like preliminary analysis of geohazards associated to ground movements
In this work a ground movement preliminary analysis in the metropolitan area of Guayaquil (Ecuador) has been realised by means of the A-DInSAR technique. For this purpose, SAR images of Envisat ASAR were processed between February 2003 and August 2005 through the free G-POD service. The results allowed to identify three important deformation zones, with average line-of-sight (LOS) velocities ranging from -19.2 to 10.1 mm/year. In addition, the accumulated deformations are between 24 and 52 mm. These ground movements are related to different geological processes: I) urban subsidence, II) floods and III) slope instabilities. This study illustrates the usefulness of G-POD service for realise A-DInSAR processing like preliminary analysis of geohazards associated to ground movements







