Publication Citation

USGS Series General Information Publication
Report Number 54
Title Sand Waves at the Mouth of San Francisco Bay, California
Edition Version 1.0
Language ENGLISH
Author(s) Gibbons, Helen
Year 2007
Originating office USGS Western Coastal and Marine Geology
USGS Library Call Number
Physical description Postcard
ISBN

Online Document Versions

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Abstract

The U.S. Geological Survey; California State University, Monterey Bay; U.S. Army Corps of Engineers; National Oceanic and Atmospheric Administration; and Center for Integrative Coastal Observation, Research and Education partnered to map central San Francisco Bay and its entrance under the Golden Gate Bridge using multibeam echosounders. You can make a nice postcard by downloading the PDF linked below; load your printer with stiff paper, print only page 1, put the paper back in the printer facing the back side, print only page 2, and cut the postcard out with scissors. View eastward, through the Golden Gate into central San Francisco Bay. Depth of sea floor color coded: red (less than 10 m deep) to purple (more than 100 m deep). Land from USGS digital orthophotographs (DOQs) overlaid on USGS digital elevation models (DEMs). Sand waves in this view average 6 m in height and 80 m from crest to crest. Golden Gate Bridge is about 2 km long. Vertical exaggeration is approximately 4x for sea floor, 2x for land.