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Optical satellite images for co-seismic horizontal offsets estimate and fault trace mapping using Phase-corr technique

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4 Author(s)
Marco Chini ; Istituto Nazionale di Geofisica e Vulcanologia, Remote Sensing Laboratory, Rome, Italy ; Pablo J. González ; Salvatore Stramondo ; José Fernández

In this work is presented a new robust unwrapping-free phase correlation method, for retrieving the coseismic displacement field and the surface rupture fault-trace mapping using optical data. Phase-corr method does not need phase unwrapping and has been proved to be robust under a wide variety of circumstances. The method has been applied at two different test cases, Izmit (Turkey) and Kashmir (Pakistan) earthquakes, occurred on August 17, 1999, and October 8, 2005, respectively. We measured the near-field deformations exploiting two geometrically corrected IRS images with similar look angles in the case of Izmit earthquake, while the Kashmir earthquake coseismic displacement has been retrieved by ASTER data. The results show that Phase-corr method can be used for deriving the coseismic slip offsets due to a large earthquake (and to map its fault trace) using optical data from different sensors.

Published in:

Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International

Date of Conference:

25-30 July 2010