Bottom Sediment Characteristics near Entrance to San Francisco Bay.
CALIFORNIA UNIV BERKELEY HYDRAULIC ENGINEERING LAB
Pagination or Media Count:
The bed material in the Golden Gate, its approaches, and the adjacent beaches show a relatively small range in grain size--fine sand 125-250 microns to coarse sand 500-1000 microns. Therefore, there appears to be no relatively coarse material of the gravel sizes available on the bottom which could serve as an armoring surface and thus control the frictional resistance to flow in and out of the Golden Gate. Generally, coarse material is found in those locations where the current velocities are high. From the limited data available, however, it appears that flow resistance in the Golden Gate and vicinity is probably controlled more by form resistance of ripples and sand waves than by grain size alone. Author
- Physical and Dynamic Oceanography
- Hydrology, Limnology and Potamology