Site summaries (continued)

Site JB-2 (Japan Basin, Matsumae Plateau, Japan Sea)

Priority: Primary (high)
Position: 41°41.95′N, 139°04.98′E (WGS 84)
Water depth (m) 1785
Target drilling depth (mbsf): 250
Approved maximum penetration (mbsf): 250
[EPSP 2008] *Pending request for 300 to EPSP
Previous drilling in area: ODP Site 796 drilled ~170 km N
Piston core: GH96-1217
Comments: Old site name: JS-4
Jurisdiction: Japan EEZ
Potential hazards: typhoon season (June to October)
Survey coverage (track map, seismic profile): Bathymetric sketch and site track map (Fig. AF4)
High-resolution seismic reflection:
• Primary line(s): KR05-09, Line 7E13905 (SP444) (Fig. AF5)
• Crossing lines(s): KR05-09, Line 7N4142 (SP680) (Fig. AF6)
3.5 kHz: KR05-09: Line 7E13905, Line 7N4142
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