Site summaries

Proposed Site NTS-1A

Priority: Primary: Chikyu Expedition 333 (NanTroSEIZE Stage 2: subduction inputs 2 and heat flow)
Position: 33°09.4195′N, 136°40.8888′E
Water depth (m): 3100
Target drilling depth (mbsf): 350
Approved maximum penetration (mbsf): 350
Survey coverage: Extensive survey data outlined in Proposal 603A-Full2:
• Primary line, CDEX 2006 3-D In-line 2315 at Cross-line 4950
• Crossing line, CDEX 2006 3-D Cross-line 4950 at In-line 2315
Objective: Collect core to characterize depositional dynamics of MTDs for use in analyzing sliding dynamics and tsunamigenic potential from sediments in the top 350 m
Drilling, coring, and downhole measurement program: HPCS/ESCS/EPCS coring, APCT-3
Anticipated lithology: 0–140 mbsf: slope apron hemipelagic sediments
140–210 mbsf: MTDs
210–350 mbsf: hemipelagic slope basin sediments intercalated with MTDs