Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Contour lines were generated from the resulting 50-m grid. The grid of bathymetric data was merged with USGS 30-m DEMs to calculate the shaded relief image, which has a 2X vertical exaggeration. Identified as best available version. Every polygon has a label and all polygons are closed.
Every line has a label.
Regional data coverage is limited by location of the survey lines. On the northern shelf from the sheltered area around Santa Cruz northwest to Point Ano Nuevo, the innermost survey lines were run into water depths as shallow as 5 meters. However in most other areas, shallowest lines were at about the 10 meter isobath, leaving a significant data gap to the shoreline. Interior gaps in the interpreted coverage are due to missing sidescan data, whether from non-overlapping tracklines, instrument failure, or corrupted data files. The side-scan sonar mosaics on the shelf north of Monterey Canyon have a pixel resolution of 0.4 m for the inner shelf and 0.8 m for the outer shelf.