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Priority:
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Primary
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Position:
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~37°56.3022′N, 143°54.8405′E
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Water depth (m):
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6910
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Target drilling depth (mbsf):
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~1000
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Survey coverage (track map; seismic profile):
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Lines HD33B and HS41B; Figure F1B
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Objective:
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Determine stress state on the fault
Characterize large earthquakes in the fault zone |
Drilling program:
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Hole A: LWD to ~950 mbsf; install casing/temperature monitoring string to ~950 mbsf
Hole B: RCB to ~950 mbsf; install casing/temperature and pressure monitoring string to ~850 mbsf |
Logging/downhole measurements program:
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Hole A: LWD⁄MWD to ~950 mbsf
LWD: resistivity, electrical imaging, gamma ray
MWD: annular pressure while drilling, temperature |
Nature of rock anticipated:
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Highly disrupted hemipelagic deposits. A chert layer is anticipated within a 100 m zone above TD.
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