The complete (3‐D) surface displacement field in the epicentral area of the 1999 <i>M_W</i>7.1 Hector Mine Earthquake, California, from space geodetic observations

Abstract

We use Interferometric Synthetic Aperture Radar (InSAR) data to derive continuous maps for three orthogonal components of the co‐seismic surface displacement field due to the 1999 M w 7.1 Hector Mine earthquake in southern California. Vertical and horizontal displacements are both predominantly antisymmetric with respect to the fault plane, consistent with predictions of linear elastic models of deformation for a strike‐slip fault. Some deviations from symmetry apparent in the surface displacement data may result from complexity in the fault geometry.