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Table T1. Site surveys in the Iheya North hydrothermal field and the surrounding area.

Cruise name Vessel Period Site surveys
KR01-09 Kairei Jul–Aug 2001 Heat flow, bathymetry, gravity, magnetism, subbottom profiling, coring
NT02-06 Natsushima Apr–May 2002 Seafloor survey and sampling by submersible, heat flow
KY02-11 Kaiyo Nov–Dec 2002 Multichannel seismic reflection survey
NT03-09 Natsushima Aug–Sep 2003 Seafloor survey and sampling by ROV, heat flow
KY05-14 Kaiyo Jan 2005 Heat flow, coring
YK06-09 Yokosuka Jul 2006 Seafloor survey and sampling by submersible, single channel seismic reflection survey, heat flow
KY07-03 Kaiyo May 2007 Multichannel seismic reflection survey
YK07-07 Yokosuka May 2007 High-resolution of bathymetry, side-scan sonar imaging by autonomous underwater vehicle
NT07-11 Natsushima June 2007 Seafloor survey and sampling by ROV, heat flow
NT07-13 Natsushima July 2007 Seafloor survey and sampling by ROV, heat flow
KY08-01 Leg 2 Kaiyo Jan 2008 Coring
KY08-01 Leg 3 Kaiyo Jan–Feb 2008 Coring
KR10-02 Kairei Jan 2010 Multichannel seismic reflection survey

ROV = remotely operated vehicle.

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