| Description |
Single-beam bathymetry data along with GPS navigation data was collected as part of the U.S. Geological Survey cruise F-7-86-HW. The cruise was conducted in Hawaii from November 28 to December 20, 1986. The chief scientists were Jim Hein from the USGS Coastal and Marine Geology office in Menlo Park, CA and Bill Schwab from the USGS Coastal and Marine Geology office in Woods Hole, Mass. This cruise had many purposes, the bathymetric data is a survey of a small area of the south Johnston Island ridge. The geophysical source was 3.5 kilohertz (kHz) system. These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/f/f786hw/html/f-7-86-hw.meta.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file. [More]
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