A note on the relationship between dip-slip fault parameters and plate parameters in the two-dimensional modelling of preseismic deformation |
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Authors: | Sarva Jit Singh Mahabir Singh |
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Institution: | (1) Department of Mathematics, Maharshi Dayanand University, 124 001 Rohtak, India |
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Abstract: | Preseismic lithospheric deformation at a subduction zone can be modelled as dip-slip dislocation on an inclined fault or as
flexure of a thin plate. Both these models predict a region of positive topography known as forebulge or outer rise. By matching
the location and the magnitude of the forebulge, we derive useful relations between the dip-slip fault parameters and the
plate parameters. In particular, we determine the width of a long dip-slip fault of given dip corresponding to a semi-infinite
plate of given thickness. The displacement profiles of the two models are also compared. |
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Keywords: | Dip-slip faulting plate flexure preseismic deformation subduction zone |
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