TY - JOUR

T1 - Deformation produced by a rectangular dipping fault in a viscoelastic-gravitational layered earth model. Part I

T2 - Thrust fault - FLTGRV and FLTGRH FORTRAN programs

AU - Fernández, José

AU - Yu, Ting To

AU - Rundle, John B.

N1 - Funding Information:
Acknowledgments-The research of J.F. was supported with funds from project EVSV-CT92-0173 of the European Union in the framework of the Environment Program, and by the Consejeria de Education y Cultura of the Comunidad de Madrid, which provided funds for his stay at CIRES, University of Colorado at Boulder. The research of J.B.R. and T.T.Y. was supported by NASA grant NAG5-2353 to the University of Colorado. We would like to thank the two anonymous reviewers who gave us valuable comments and improved the quality of this paper.

PY - 1996/8

Y1 - 1996/8

N2 - This is the first article in a series in which we describe theoretical and computational methods for the calculation of viscoelastic-gravitational displacements resulting from rectangular dipping faults into a layered Earth model. We consider a medium composed of one elastic-gravitational layer over a viscoelastic-gravitational half-space, the fault being located entirely in the layer. Calculations of vertical and horizontal displacements as a result of a finite rectangular thrust fault are presented. The FORTRAN 77 programs FLTGRV and FLTGRH used to compute vertical and horizontal displacement, respectively, are described. Finally we present some examples of displacement computations. We consider different dip angles for the fault, and faults that extend partially and totally along the elastic-gravitational layer. The results show that viscoelasticity introduces a long wavelength component into the deformation field that cannot be modeled using purely elastic techniques. It is observed that appropriate consideration must be given to gravity for close field calculations and long periods of time. The model and the programs presented are useful for performing theoretical calculations of displacement in seismic cycles.

AB - This is the first article in a series in which we describe theoretical and computational methods for the calculation of viscoelastic-gravitational displacements resulting from rectangular dipping faults into a layered Earth model. We consider a medium composed of one elastic-gravitational layer over a viscoelastic-gravitational half-space, the fault being located entirely in the layer. Calculations of vertical and horizontal displacements as a result of a finite rectangular thrust fault are presented. The FORTRAN 77 programs FLTGRV and FLTGRH used to compute vertical and horizontal displacement, respectively, are described. Finally we present some examples of displacement computations. We consider different dip angles for the fault, and faults that extend partially and totally along the elastic-gravitational layer. The results show that viscoelasticity introduces a long wavelength component into the deformation field that cannot be modeled using purely elastic techniques. It is observed that appropriate consideration must be given to gravity for close field calculations and long periods of time. The model and the programs presented are useful for performing theoretical calculations of displacement in seismic cycles.

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U2 - 10.1016/0098-3004(96)00003-9

DO - 10.1016/0098-3004(96)00003-9

M3 - Article

AN - SCOPUS:0030513709

VL - 22

SP - 735

EP - 750

JO - Computers and Geosciences

JF - Computers and Geosciences

SN - 0098-3004

IS - 7

ER -