Abstract After the 2011 Tohoku-Oki earthquake (Mw9.0), near-field GPS data and Ocean GPS data were separately derived for the fault slip model or joint inversion. However, up to now, far-field GPS data are rarely used for inverting the slip pattern. By calculating and comparing the dip and rake angle of four independent source solutions, the paper studies spatial distribution characteristics and rules of the far field earthquake horizontal deformation using GPS data from eastern Asia. Results show that for subduction earthquakes with low dip angles, the horizontal tensile displacement Green Function is the main part of the far-field horizontal displacement. We can also determine the range of effective GPS horizontal displacement data in the inversion. It provides the theoretical basis for joining far-field and near-field GPS observations to invert the fault slip models of the 2011 Tohoku-Oki earthquake (Mw 9.0) and to invert the dislocation Love numbers h and l.
YANG Junyan,YI Shuang,SUN Wenke . Research on the Far-Field GPS Co-Seismic Displacement Deformation: The 2011 Tohoku-Oki Earthquake (Mw 9.0)[J]. jgg, 2017, 37(11): 1112-1117.
YANG Junyan,YI Shuang,SUN Wenke . Research on the Far-Field GPS Co-Seismic Displacement Deformation: The 2011 Tohoku-Oki Earthquake (Mw 9.0)[J]. jgg, 2017, 37(11): 1112-1117.