Pacific Coastal & Marine Science Center
Diversity of bed forms at the mouth of San Francisco Bay, just seaward of the Golden Gate Bridge. (a) Irregular sand waves seaward of the main sand wave field. (b) Up to 150 meter wavelength ebb-dominated sand waves with superimposed 510 meter scale sand waves. (c) Twenty- to 30-meter wavelength scale linguoid-shaped sand waves. (d) Fifteen- to 20-meter wavelength scale flood-dominated sand waves.