San Francisco Bay: Modeling System for Dredged Material Disposal and Hydraulic Transport PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
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Book Description
A combination of physical and numerical models was used to simulate the hydrodynamic, circulation, and sediment transport characteristics of San Francisco and San Pablo bays. This simulation was done in response to a request by the US Army Engineer District, San Francisco, to develop a modeling tool that can define the fate of dredged material disposed at the Alcatraz disposal site. Keywords: Computer simulation, Dredged material disposal models, Mathematical models, Dredged material management. (KT).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
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Book Description
A combination of physical and numerical models was used to simulate the hydrodynamic, circulation, and sediment transport characteristics of San Francisco and San Pablo bays. This simulation was done in response to a request by the US Army Engineer District, San Francisco, to develop a modeling tool that can define the fate of dredged material disposed at the Alcatraz disposal site. Keywords: Computer simulation, Dredged material disposal models, Mathematical models, Dredged material management. (KT).
Author: Virginia R. Pankow
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages : 90
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Author: Allen M. Teeter
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages : 100
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Author:
Publisher:
ISBN:
Category : Estuarine oceanography
Languages : en
Pages : 94
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Author:
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ISBN:
Category :
Languages : en
Pages : 96
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Field data analysis was used to examine suspended sediment transport in Central San Francisco Bay, and to develop and verify a two-dimensional numerical fine-grained sediment transport model. This study concerned the dispersion and fate of disposed dredged material in Central San Francisco Bay, California. The 1992 monitoring survey spanned a 2-week period in June, and used three boat-mounted acoustic Doppler current profiling (ADCP) systems to obtain repeated cross-sectional transects near the Golden Gate, the entrance to South Bay, and Richmond Point. Between acoustic transects, water samples were obtained over depth for salinity, total suspended material (TSM) concentration, and particle size determinations. Acoustic backscatter data were used to produce correlated suspended material concentration and flux fields. Discrete measurements were fit to empirical discharge and suspended flux models and integrated over a neap-spring-neap tidal sequence to estimate net transport. There was an observed net transport of suspended sediment seaward at the Golden Gate over the neap to spring sampling period. The total net transport was 188,000 metric tonnes seaward over 14 lunar days. Fluxes during the ebb flows averaged 44% greater than the flood flows, and instantaneous strong-ebb TSM fluxes were often more than twice those on flood tidal phases. Suspended sediment concentrations increased during the strongest part of the ebb at all Central Bay sampling ranges. Wind forcing did not appear imponant to this process. Suspended concentrations quickly returned to normal levels after the passage of peak ebb flows. Spatial variability in the TSM fields was relatively large. The ADCP backscatter intensity measurements correlated well with TSM especially on the Golden Gate range where a broadband unit was employed.
Author: Allen M. Teeter
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages : 100
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Author: United States. Army. Corps of Engineers. San Francisco District
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ISBN:
Category : Dredging
Languages : en
Pages : 142
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Author: United States. Army. Corps of Engineers
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Category : Environmental hydraulics
Languages : en
Pages : 168
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Author: Ray Samuelson
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ISBN:
Category :
Languages : en
Pages : 408
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The report presents the evaluation of the economic, technical and environmental feasibility of land disposal of dredged material from San Francisco Bay and development of an economic comparison model of various dredging methods and transport modes for different combinations of alternative land and water disposal systems. Studies included costing of dredging equipment and transport modes; mapping potential land sites around the Bay; and evaluating sites in terms of the physical properties of the sediments, site operation and site constraints. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 468
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