In 1996 the Pacific Seafloor Mapping Project surveyed the shelf and slope offshore Los Angeles, CA (between the 20 to 800-m isobaths) from Pt. Dume to the Paloes Verdes. In 1998 the project continued mapping to the south and surveyed the outer shelf, slope, and proximal basin off Long Beach and Newport. The two datasets were merged and regridded into a single database. These two surveys were conducted to support a USGS project studying marine pollution and geohazards along the Los Angeles Margin, southern California.. The data show, for the first time, the details of the continental margin of this region. The major elements include:
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