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2.5‐D surface deformation of M6.1 earthquake near Mt Iwate detected by SAR interferometry
Author(s) -
Fujiwara Satoshi,
Nishimura Takuya,
Murakami Makoto,
Nakagawa Hiroyuki,
Tobita Mikio,
Rosen Paul A.
Publication year - 2000
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl011291
Subject(s) - aftershock , geology , seismology , interferometric synthetic aperture radar , fault (geology) , volcano , displacement (psychology) , interferometry , deformation (meteorology) , geodesy , radar , stress field , synthetic aperture radar , remote sensing , psychology , telecommunications , oceanography , physics , computer science , psychotherapist , astronomy , finite element method , thermodynamics
The two‐dimensional displacement vector field on the Earth's surface associated with a large earthquake near Iwate volcano in Japan, was mapped by combining satellite radar interferometry images from two different track directions. The displacement reveals not only large main ruptures, but details of many small faults movement of aftershocks and volcanic earthquakes. The displacements of the aftershock faults coincide with a stress field reorganized by the main earthquake that accelerated the aftershock fault movements. The displacements mimic the topography, suggesting that repeated movements of the same faults in the Quaternary have led to the presently existing topography.