2024-03-28T19:36:35Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/315192019-08-21T06:23:52Zcom_10261_91com_10261_8col_10261_344
00925njm 22002777a 4500
dc
Sousa, Joaquim João
author
Ruíz Armenteros, Antonio
author
Hanssen, Ramón F.
author
Bastos, Luisa
author
Gil, Antonio
author
Galindo Zaldívar, Jesús
author
Sanz de Galdeano, Carlos
author
2010-04
Differential SAR interferometry (DInSAR) is a very effective technique for measuring crustal deformation. However, almost all interferograms include large areas where the signals decorrelate and no measurements are possible. Persistent scatterer interferometry (PS-InSAR) overcomes the decorrelation problem by identifying resolution elements whose echo is dominated by a single scatterer in a series of interferograms.
Two time series of 29 ERS-1/2 and 22 ENVISAT ASAR acquisitions of the Granada basin, located in the central sector of the Betic Cordillera (southern Spain), covering the period from 1992 to 2005, were analyzed. Rough topography of the study area associated to its moderate activity geodynamic setting, including faults and folds in an uplifting relief by the oblique Eurasian–African plate convergence, poses a challenge for the application of interferometric techniques. The expected tectonic deformation rates are in the order of 1 mm/yr, which are at the feasibility limit of current InSAR techniques.
In order to evaluate whether, under these conditions, InSAR techniques can still be used to monitor deformations we have applied and compared two PS-InSAR approaches: DePSI, the PS-InSAR package developed at Delft University of Technology (TU Delft) and StaMPS (Stanford Method for Persistent Scatterers) developed at Stanford University. Ground motion processes have been identified for the first time in the study area, the most significant process being a subsidence bowl located at the village of Otura.
The idea behind this comparative study is to analyze which of the two PS-InSAR approaches considered might be more appropriate for the study of specific areas/environments and to attempt to evaluate the potentialities and benefits that could be derived for the integration of those methodologies.
Journal of Geodynamics 49(3-4): 181-189 (2010)
0264-3707
http://hdl.handle.net/10261/31519
10.1016/j.jog.2009.12.002
PS-InSAR
Deformation
DePSI
StaMPS
Granada basin
Radar interferometry
PS-InSAR processing methodologies in the detection of field surface deformation—Study of the Granada basin (Central Betic Cordilleras, southern Spain)