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Introduction This database release, USGS Data Series 171, contains data collected during four Japan-USA collaborative cruises that characterize the seafloor around the Hawaiian Islands. The Japan Agency for Marine-Earth Science and Technology (JAMSTEC) sponsored cruises in 1998, 1999, 2001, and 2002, to build a greater understanding of the deep marine geology around the Hawaiian Islands. During these cruises, scientists surveyed over 600,000 square kilometers of the seafloor with a hull-mounted multibeam seafloor-mapping sonar system (SEA BEAM® 2112), observed the seafloor and collected samples using robotic and manned submersible dives, collected dredge and piston-core samples, and performed single-channel seismic surveys. To date, 32 research papers have been published describing results from these cruises. For a list of these articles see the bibliography. This digital database was compiled with ESRI® ArcInfo® version 7.2.2 and ArcGIS® 9.0. The GIS files contain multibeam bathymetry, and acoustic backscatter data in ESRI grid format, and dive, seafloor sampling, and siesmic location data in ESRI shapefile format; ArcInfo-compatible GIS software is therefore required to use the files of this database. Metadata for the GIS files are available as text files. The GIS files were also symbolized and used to create Portable Document Format (PDF) files that are ready to be printed. Adobe® Reader® or other software that can translate PDFs is necessary to print these files. |