Funding for this research was provided by:
Japan Society for the Promotion of Science (JP15H05717)
Text and Data Mining valid from 2019-01-23
Received: 26 March 2018
Accepted: 20 December 2018
First Online: 23 January 2019
: MK has been committed to the IODP NanTroSEIZE project, which was started in 2007, as a key member of the project coordination team.
: The authors declare that they have no competing interests.
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