Seismological evidence for heterogeneous lowermost outer core of the Earth from PKiKP–PKPbc differential traveltime and dispersion in PKPbc

Toshiki Ohtaki1, Satoshi Kaneshima2, Hiroki Ichikawa3 and Taku Tsuchiya3, (1)Geological Survey of Japan, AIST, Tsukuba, Japan, (2)Kyushu University, Fukuoka, Japan, (3)Ehime University, Geodynamics Research Center, Matsuyama, Japan