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Título

Subsurface deformation and geoid changes due to earthquakes

AutorYu, Ting-To; Fernández Torres, José ; Rundle, J. B.
Palabras claveGeoid changes
Earthquakes
Subsurface deformations
Fecha de publicación1997
EditorCSIC-UCM - Instituto de Astronomía y Geodesia (IAG)
CitaciónPublicación. Instituto de Astronomía y Geodesia, nº 191 : p. 33-50 (1997)
SeriePublicación. Instituto de Astronomía y Geodesia
191
ResumenThe subsurface deformation associated with earthquake faulting is modeled within a three-dimensional homogeneous half-space. It is found that at the boundary of ruptured fault, the strike slip faulting changes mainly the horizontal displacement field, shear stress; while dip slip events affect primarily both the vertical and horizontal components, normal stress. Yiscoelastic gravitational layered model was utilized for computing the postseismic displacement. The modeled postseismic subsurface uplift for five historical events match the geoid high found in the Himalayas. Such geoid residual may serve as a signature of historical events thus can be used to study the existence of seismic gaps.
DescripciónPresented in the First Meeting of Special Study Group 4.176 (Models of temporal variations of the gravity field) of the International Association of Geodesy
URIhttp://hdl.handle.net/10261/24154
ISSN0213-6198
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