Site summaries (continued)

Site YB-3 (Yamato Basin, Japan Sea)

Priority: Alternate
Position: 38°37.00′N, 134°32.00′E (WGS 84)
Water depth (m) 2874
Target drilling depth (mbsf): 200
Approved maximum penetration (mbsf): 200
[EPSP 2008] *Pending request to EPSP for 250
Previous drilling in area: Redrill of ODP Site 797
Comments: Old site name: JS-9
Jurisdiction: Japan EEZ
Potential hazards: typhoon season (June to October)
Survey coverage (track map, seismic profile): High-resolution seismic reflection:
• Primary line(s): KR07-12, Line St8-1-2 (SP518) (Fig. AF24)
• Crossing lines(s): KR07-12, Line St8-3-4 (SP375) (Fig. AF25)
3.5 kHz: KR07-12: Line St8-1-2, Line St8-3-4
Swath bathymetry: KR07-12, Line St8-1-2, Line St8-3-4 (Fig. AF26)
Objectives (see text for complete details): High-resolution reconstruction of dust flux, as well as other paleoceanographic records, in the southern part of the Japan Sea during the last 4 m.y.
Drilling, coring, and downhole measurements program: Triple APC to 200 mbsf
Temperature measurements: APCT-3
Orientation on first hole: FlexIt
Downhole logging program: Standard tools: triple combo, FMS-sonic
Anticipated lithology: Diatomaceous clay to silt