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Author: Ernest Paul Petzrick
Publisher:
ISBN:
Category : Oceanography
Languages : en
Pages : 130
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Book Description
From 9 November through 15 December, 1992 a bottom mooring consisting of an upward looking acoustic doppler current profiler (ADCP) and a conductivity-temperature pressure (CTD) instrument were deployed in the Golden Gate. Tidal constituents were derived from least squares fit on pressure and current data. The amplitude of the M2 tide was 0.6 m and 100 cm/s, and primary tidal constituents were about 0.3 m and 20 cm/s. Current profiles were largely barotropic and one dimensional. Overtides and compound tides had amplitudes less than 0.02 m and 5 cm/s but had baroclinic structure and two dimensional hodographs. Tidal currents appear to be hydraulically driven. Mean flow and transport were directed at 110 deg T at 23 cm/s and 45 cu.m/s; indicative of the two dimensional structure of the Golden Gate. Mean energy fluxes at the site were 30,000 W for kinetic energy advection and 8,500,000 W for the work done by pressure. If representative of the channel, they imply a total energy flux of 8. 5 x 1O to the 9th power W through the Gate.
Author: Ernest Paul Petzrick
Publisher:
ISBN:
Category : Oceanography
Languages : en
Pages : 130
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Book Description
From 9 November through 15 December, 1992 a bottom mooring consisting of an upward looking acoustic doppler current profiler (ADCP) and a conductivity-temperature pressure (CTD) instrument were deployed in the Golden Gate. Tidal constituents were derived from least squares fit on pressure and current data. The amplitude of the M2 tide was 0.6 m and 100 cm/s, and primary tidal constituents were about 0.3 m and 20 cm/s. Current profiles were largely barotropic and one dimensional. Overtides and compound tides had amplitudes less than 0.02 m and 5 cm/s but had baroclinic structure and two dimensional hodographs. Tidal currents appear to be hydraulically driven. Mean flow and transport were directed at 110 deg T at 23 cm/s and 45 cu.m/s; indicative of the two dimensional structure of the Golden Gate. Mean energy fluxes at the site were 30,000 W for kinetic energy advection and 8,500,000 W for the work done by pressure. If representative of the channel, they imply a total energy flux of 8. 5 x 1O to the 9th power W through the Gate.
Author: Ralph T. Cheng
Publisher:
ISBN:
Category : Tides
Languages : en
Pages : 776
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Book Description
Author:
Publisher:
ISBN:
Category : Ocean currents
Languages : en
Pages : 130
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Book Description
Author: Richard A. Denton
Publisher:
ISBN:
Category : San Francisco Bay (Calif.)
Languages : en
Pages : 190
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Book Description
Author: Richard A Denton
Publisher:
ISBN:
Category : San Francisco Bay (Calif.)
Languages : en
Pages : 238
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Book Description
Author: San Francisco Yacht Club
Publisher:
ISBN:
Category : Yachting
Languages : en
Pages : 78
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Book Description
Author: H. Jesse Walker
Publisher: Springer Science & Business Media
ISBN: 9400929994
Category : Science
Languages : en
Pages : 700
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Book Description
This volume is the result of an initiative of the Commission on the Coastal Environment of the International Geographical Union. The initial concept from which the plan has proceeded was presented at the 24th International Geographical Congress in Japan in 1980. AUTHORSHIP AND COVERAGE All of the articles in this volume have been written by specialists familiar with the coastal segment discussed. Nearly all have been prepared by citizens of the country (and, for that matter, even each subregion) considered. In the case of exceptions (e.g. Suriname), the authors have conducted fieldwork on the coast of the country they treat. In order to preserve the "on-the-spot" integrity of the volume, it was decided not to fill in the blanks along the world's coastline with library researched chapters. Thus, coverage is variable. Nearly every coastal country in Europe is represented whereas for Africa and South America there are major gaps. In addition, there are 2 instances of overlap. In the case of England (with a shoreline of nearly 3,000 km) a complementary chapter on Lincolnshire (with a shoreline of only 155 km) is included. The other case is the general article on the Baltic Coast of the USSR which is supported by chapters on Estonia and Lithuania.
Author: United States. Board of Engineers for Rivers and Harbors
Publisher:
ISBN:
Category : Alameda (Calif.)
Languages : en
Pages : 542
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Book Description
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 210
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Book Description
Author: United States. Army. Corps of Engineers. San Francisco District
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 654
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Book Description
The report presents information developed in the course of a multi-year investigation of the need for shore protection and storm damage reduction. The study area was 8.6 miles of the Pacific coast, known as Ocean Beach, in the City of San Francisco, CA. The study area extended from Cliff House to Fort Funston. The beach portion of the study area is in the Golden Gate National Recreation Area, under the jurisdiction of the National Park Service. Facilities threatened with damage included the Great Highway, parking lots of the GGNRA, a buried storm and sewer water transport box, a sewer pumping plant and ultimately houses and businesses. The report records the Ocean Engineering, Economic, and Geotechnical studies used to formulate and analyze a variety of alternative measures, including structural seawalls and revetments, as well as beach and dune nourishment. The final analysis indicated that most of the study area, while not absolutely safe, had a low probability of erosion. In the one area with a possible federal interest, the sponsor was unable to agree to cost share at the time of the report. Therefore the study was terminated. The sponsor will pursue other measures not requiring federal cost sharing.
