Funding for this research was provided by:
Sasakawa Scientific Research Grant from the Japan Science Society (29-713)
Japan Society for the Promotion of Science (JSPS KAKENHI Grant Number JP15H05717, KAKENHI Grant Number 17K05687)
Received: 2 April 2018
Accepted: 11 October 2018
First Online: 1 November 2018
: HK is a PhD student and specializes in structural geology, marine geology, and tectonic geomorphology of subduction zones. YY is the head of the Research and Development Center and specializes in petroleum geology, structural geology, geophysical exploration, and drilling science of subduction zones. AO specializes in marine geology of subduction zones. AB is a researcher specialized in the mechanics of geological structures. AY is an Associate Professor and specializes in marine geology, structural geology, and chemical geology of subduction zones. JA is an Associate Professor and specializes in marine geology of subduction zones.
: The authors declare that they have no competing interests.
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