Characteristics of the seismic images and its relation to the shallow very low frequency events in the central Nankai trough

Yasuyuki Nakamura1, Shuichi Kodaira2, Tetsuo No3, Yuka Kaiho4, Gou Fujie5, Kazuya Shiraishi1 and Seiichi Miura4, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics, Yokohama, Japan, (3)Japan Agency for Marine-Earth, Yokohama, Japan, (4)JAMSTEC, Yokohama, Japan, (5)R&D Center for Earthquake and Tsunami, JAMSTEC, Yokohama, Japan