High-resolution multibeam bathymetry and backscatter data collected in 2004 for the northern Channel Islands region, southern California

This data release presents data for 5-m resolution multibeam-bathymetry and acoustic-backsccatter data of the northern Channel Islands region, southern California. In 2004 the U.S. Geological Survey, Pacific Coastal and Marine Science Center collected multibeam-bathymetry and acoustic-backscatter data in the northern Channel Islands region, southern California. The region was mapped aboard the R/V Ewing using a Kongsberg Simrad EM-1002 multibeam echosounder. These data were previously published on-line at http://pubs.usgs.gov/of/2005/1153/. In this data release the data have been reprocessed to a finer spatial resolution (5-m versus 15-m) using more modern processing techniques. Due to the large file sizes the entire survey area is separated into two regions; a northern region and a southern region. Four ASCIIRaster files are available. Each compressed file contains an ASCIIRaster file (.asc), a projection files (.prj), and a FGDC metadata files (.xml).