**Acknowledgements**

The authors would like to express their appreciation to the involved JARE members for their great efforts to conduct seismic deployments around the LHB. The authors would also like to express sincere thanks to the geosciences staffs of NIPR, led by Prof. K. Shiraishi, the Director General, for their useful discussion. They would like to express their thankfulness to the reviewers, for their critical checks and useful comments. The authors would like to appreciate editors of this book series on "tectonics" as well as the editorial office of InTech Publisher.
