Site summaries (continued)

Site YB-2 (Yamato Basin, Oki Ridge, Japan Sea)

Priority: Primary
Position: 37°02.00′N, 134°48.00′E (WGS 84)
Water depth (m) 930
Target drilling depth (mbsf): 400
Approved maximum penetration (mbsf): 400
[EPSP 2008] *Pending request to EPSP for 450
Previous drilling in area: Redrill of ODP Site 798
Comments: Old site name: JS-1
Jurisdiction: Japan EEZ
Potential hazards: typhoon season (June to October)
Survey coverage (track map, seismic profile): Deep-penetration seismic reflection:
• Primary line(s): GH86-4, Line JS-2 (SP2049) (Fig. AF13)
3.5 kHz: GH874, 23:50 September 19
Site track location (Fig. AF14)
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; single XCB to 400 mbsf
Temperature measurements: APCT-3
Orientation on first hole: FlexIt
Downhole logging program: NA
Anticipated lithology: Diatomaceous clay to silt