In Spring of 1998 the Monterey Bay Aquarium Research Institute (MBARI) completed surveys of seamounts and ridges offshore Northern California and Oregon.
Bathymetry and backscatter data were collected using the Simrad EM300 multibeam system on a contracted vessel, the M/V Ocean Alert. We contracted with C&C Technologies to run the system because they had installed the EM300 system. The hull-mounted 30 kHz EM300 system allowed us to collect georeferenced high-resolution bathymetric and sidescan data at high speeds, in water ranging from shelf to abyssal depths.
The data from the survey are presented on these web pages.
West Coast Seamounts and Ridges Survey Areas
Choose from the following survey area list or click on the map area to view images and survey details.
Final processing of the data was done using the software package MB-System. The swath data have been deposited at the National Geophysical Data Center (NGDC) and are available there for free download.
The MBARI Mapping Team includes Nancy Barr, David Caress, David Clague, Judy Donaldson, Jennifer Paduan, and Brian Schlining. The data were collected by Gerry Hatcher, Norman Maher, and David Clague from MBARI, Jennifer Reynolds from the University of Alaska at Fairbanks, and the mapping crew from C&C Technologies.
MBARI provides these data "as is", with no warranty, express or implied, of the data quality or consistency. Data are provided without support and without obligation on the part of the Monterey Bay Aquarium Research Institute to assist in its use, correction, modification, or enhancement.