抄録
Following the method described by KIKUCHI and KANAMORI (1982), we develop an iterative deconvolution of complex body waves in which subevents may take two different fault mechanisms. The method is applied to teleseismic P waves of the Izu-Oshima earthquake of 1978. The result shows that the coseismic slip motion occurred not only on a submarine fault but also on an inland fault of the Izu-Peninsula. The seismic moment of the inland faulting is 4.3×1025 dyn·cm, which amounts to about one third of that of the submarine aulting : 1.4×1026 dyn·cm. Our result is consistent with the fact that aftershock activity increased around the inland and submarine faults almost simultaneously after the main shock.
