Volume 135A: Chapter 3: Figure 1. Bathymetry of the central Lau Basin between18°30' and 21°S and 175°30' and 178°W. Contours are in uncorrected meters at100-m intervals. Scale is 1:375000 at 20°S, projection is Standard Mercator. Datasources include (1) single-beam echo-sounder depths from Charles Darwin CruiseCD33, digital data from the National Geophysical Data Center, Boulder, CO, andGEBCO oceanic soundings, Sheet 355, compiled by the Hydrographic Office,Royal New Zealand Navy, October 1989; and (2) multibeam echo-sounder depthsfrom Thomas Washington ROUNDABOUT Cruises 14 and 15 and Sonne CruiseSO35. Solid circles = Leg 135 sites.

Bathymetryof the

LAU BASIN

Contours in uncorrected metres(1500m/s)

Interval 100 metres

Scale: 1/375,000 at 20° S

Mercator projection

41 V Seabeam surveys.

___— Seabeam tracks.

— - S ^ Single beam:

Digital soundings, supplied by theNational Geophysical Data Center, USA.

Bathymeric plotting sheet 354,supplied by the RNZN Hydrographic Office.