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Table T2. Recent surveys of heat flow in the local hydrothermal recharge/discharge Iheya North hydrothermal field used during Expedition 331. (See table notes.)

Cruise
Chief scientist
Operation
Ship
Period
Measurement for site survey
KR01-09 K. Takai Piston corer Kairei July–August 2001 HF, bathymetry, gravity, magnetism, SBP, coring
NT02-06 F. Inagaki Shinkai 2000 Natsushima April–May 2002 Observation, HF, sampling
KY02-11 K. Takai MCS Kaiyo November–December 2002 MCS
NT03-09 F. Inagaki Hyper-Dolphin Natsushima August–September 2003 Observation, HF, sampling
KY05-14 M. Kinoshita NSS Kaiyo January 2005 HF, coring
YK06-09 T. Oji Shinkai 6500 Yokosuka July 2006 SCS, observation, HF, sampling
KY07-03 T. Okano MCS Kaiyo May 2007 MCS
YK07-07 T. Tsukioka AUV/Urashima Yokosuka May 2007 High-resolution bathymetry, side-scan sonar imaging
NT07-11 S. Nakagawa Hyper-Dolphin Natsushima June 2007 Observation, HF, sampling
NT07-13 S. Nakagawa Hyper-Dolphin Natsushima July 2007 Observation, HF, sampling
KY08-01 Leg 2 F. Yamamoto Piston corer Kaiyo January 2008 Coring
KY08-01 Leg 3 M. Kinoshita Piston corer Kaiyo January–February 2008 Coring
KR10-02 T. Okano MCS Kairei January 2010 MCS

Notes: MCS = multichannel seismic, NSS = navigable sampling system, AUV = autonomous underwater vehicle. HF = heat flow, SBP = subbottom profiler, SCS = single-channel seismic.

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