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MODELING OF DEFORMATION SOURCES BASED ON A NON-LINEAR INVERSION APPROACH
Type
Poster session
Language
English
Obiettivo Specifico
1.10. TTC - Telerilevamento
Status
Published
Conference Name
Issued date
November 30, 2009
Conference Location
Frascati, Italy
Abstract
A new modeling of deformation sources based on a nonlinear
inversion approach is proposed. The forward
modeling is provided by the semi-analytic deformation
model for point sources and finite faults. The parameters
of the fault are inverted using a combination of nonlinear
optimization algorithms. The misfit function
defined for the optimization is based on the L2 norm of
the error weighted by the coherence of the considered
spatial point. In order to explain our modeling
procedure we propose the inversion of a single
descending pass differential interferogram of the Bam
2003 earthquake.
inversion approach is proposed. The forward
modeling is provided by the semi-analytic deformation
model for point sources and finite faults. The parameters
of the fault are inverted using a combination of nonlinear
optimization algorithms. The misfit function
defined for the optimization is based on the L2 norm of
the error weighted by the coherence of the considered
spatial point. In order to explain our modeling
procedure we propose the inversion of a single
descending pass differential interferogram of the Bam
2003 earthquake.
References
1.Chen, C.W. & Zebker, H.A. (2001). Two-dimensional
phase unwrapping with use of statistical models for
cost functions in nonlinear optimization. Journal of
the Optical Society of America. 18, 338-351.
2.Kampes, B., Hanssen, R., Perski, Z. (2003) Radar
Interferometry with Public Domain Tools.
Proceedings of FRINGE 2003, December 1-5,
Frascati, Italy, 2003.
3.Kampes, B. & Usai, S. (1999). Doris: The Delft
object-oriented Radar Interferometric software.
Proceedings ITC 2nd ORS symposium, August 1999
(CD-ROM).
4.Okada, J. (1985). Surface deformation due to shear
and tensile faults in a half-space. Bulletin of the
Seismological Society of America. 75(4), 1135-
1154.
phase unwrapping with use of statistical models for
cost functions in nonlinear optimization. Journal of
the Optical Society of America. 18, 338-351.
2.Kampes, B., Hanssen, R., Perski, Z. (2003) Radar
Interferometry with Public Domain Tools.
Proceedings of FRINGE 2003, December 1-5,
Frascati, Italy, 2003.
3.Kampes, B. & Usai, S. (1999). Doris: The Delft
object-oriented Radar Interferometric software.
Proceedings ITC 2nd ORS symposium, August 1999
(CD-ROM).
4.Okada, J. (1985). Surface deformation due to shear
and tensile faults in a half-space. Bulletin of the
Seismological Society of America. 75(4), 1135-
1154.
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