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Near bottom velocity and suspended solids measurements in San Francisco Bay, California

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Abstract

Ability to accurately measure long-term time-series of turbulent mean velocity distribution within the bottom boundary layer (BBL) in addition to suspended solids concentration (SSC) is critical to understanding complex processes controlling transport, resuspension, and deposition of suspended sediments in bays and estuaries. A suite of instruments, including broad band acoustic Doppler current profilers (BB-ADCPs), capable of making very high resolution measurement of velocity profiles in the BBL, was deployed in the shipping channel of South San Francisco Bay (South Bay), California in an investigation of sediment dynamics during March and April 1995. Results of field measurements provide information to calculate suspended solids flux (SSF) at the site. Calculations show striking patterns; residual SSF varies through the spring-neap tidal cycle. Significant differences from one spring tide to another are caused by differences in tidal current diurnal inequalities. Winds from significant storms establish residual circulation patterns that may affect magnitude of residual SSF more than increased tidal energy at spring tides.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Near bottom velocity and suspended solids measurements in San Francisco Bay, California
Volume
B pt 2
Year Published:
1997
Language:
English
Publisher:
ASCE
Publisher location:
New York, NY, United States
Larger Work Title:
Proceedings, Congress of the International Association of Hydraulic Research, IAHR
First page:
1090
Last page:
1095
Number of Pages:
6
Conference Title:
Proceedings of the 1997 27th Congress of the International Association of Hydraulic Research, IAHR. Part D
Conference Location:
San Francisco, CA, USA
Conference Date:
10 August 1997 through 15 August 1997