Map of western Pacific area where at least five major plates with consuming boundaries interact. Dark gray squares are primary drill sites, light gray triangles are alternate drill sites, and gray circles are DSDP sites.
Bathymetry is in meters.
Swath bathymetry of the Japan Trench area. The proposed sites are located on a deep sea terrace. A. Schematic configuration of the instrument package with multisensors for crustal strain and broadband seismometry. B. Strainmeter installation schemetic for Sites JT-1C and JT 2G with lithologies extrapolated from Leg 57. Site survey track lines and proposed sites.