On the radially heterogeneous media elastic deformation within source zones
Category: 13-3
UDC 550.31
M.S. Molodenskiy, D.S. Molodenskiy
Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Abstract
Surface displacement fields in the area of the city of Antofagasta in the Central Andes are calculated for a set of models of the fault zone differing by the fault orientation, extent, and orientation of Burgers' vector. For the solution of the inverse problem of definition of the source zone parameters according to GPS-data, the 5-dimensional parameterization of the fault plane is used. In order to reduce the amount of independently varied parameters, the fault plane is assumed flat. The distribution of elasticity modules by depth is defined accordingly to continental model PREM. To minimize the mean square deviations between observed and theoretical data the method of the quickest release in five-measured space is used.
Keywords: models of a tectonic source zones, GPS-data.
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