Geological-Seismological Evaluation of Earthquake Hazards at West Thompson Damsite, Connecticut PDF Download
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Author: E. L. Krinitzsky
Publisher:
ISBN:
Category : Dam safety
Languages : en
Pages : 93
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Book Description
A seismic zoning was developed for southeastern New England based on geologic structure and historic seismicity. Floating earthquakes were assigned for these zones and attenuated to the site. The site was found to be susceptible to a local earthquake (acceleration 0.16 g, velocity 13 cm/sec, and duration> or = 0.05 g of 4 sec) and a Cape Ann earthquake (acceleration 0.13 g, velocity 13 cm/sec, and duration> or = 0.05 g of 4 sec). Accelerograms and response spectra appropriate to these values were selected.
Author: E. L. Krinitzsky
Publisher:
ISBN:
Category : Dam safety
Languages : en
Pages : 93
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Book Description
A seismic zoning was developed for southeastern New England based on geologic structure and historic seismicity. Floating earthquakes were assigned for these zones and attenuated to the site. The site was found to be susceptible to a local earthquake (acceleration 0.16 g, velocity 13 cm/sec, and duration> or = 0.05 g of 4 sec) and a Cape Ann earthquake (acceleration 0.13 g, velocity 13 cm/sec, and duration> or = 0.05 g of 4 sec). Accelerograms and response spectra appropriate to these values were selected.
Author: E. L. Krinitzsky
Publisher:
ISBN:
Category : Dam safety
Languages : en
Pages : 100
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Book Description
Seismic zones were developed for southeastern New England based on geological and geophysical data and on historic seismicity. Each zone was assigned a floating maximum earthquake and earthquake motions were attenuated from their sources to the site. The site was found to be subject to a local earthquake (acceleration 0.16 g, velocity 13 cm/sec, and duration> or = 0.05 g of 4 sec) and a Cape Ann earthquake (acceleration 0.13 g, velocity 13 cm/sec, and duration> or = 0.05 g of 4 sec). Accelerograms and response spectra appropriate to these values were selected.
Author: E. L. Krinitzsky
Publisher:
ISBN:
Category : Dams
Languages : en
Pages : 166
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Book Description
Seismic zones were developed for northern New England based on geological and geophysical data and on historic seismicity. Each zone was assigned a floating maximum earthquake and earthquake motions were attenuated to the site fron their sources. The site was found to be subject to a local earthquake (acceleration 0.15 g, velocity 27 cm/sec, and duration> or = 0.5 g of 9 sec) and an earthquake originating from the Ossipee area (acceleration 0.38 g, velocity 25 cm/sec, and duration> or = 0.05 g of 6 sec). Accelerograms and response spectra appropriate to these values were selected.
Author: E. L. Krinitzsky
Publisher:
ISBN:
Category : Dams
Languages : en
Pages : 90
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Book Description
A seismic zoning was developed for eastern Pennsylvania and adjacent states based on the geology and the historic seismicity. Floating earthquakes were assigned to those zones in the absence of identifiable active faults. At the Prompton and Francis E. Walter Damsites, motions were far field, Modified Mercalli VI, acceleration 0.12g, velocity 7 cm/sec, and 3 sec bracketed duration> or = 0.05g. Accelerograms and response spectra appropriate to these parameters were selected.
Author: William E. Hancock
Publisher:
ISBN:
Category :
Languages : en
Pages : 452
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Book Description
No evidence of active faults is present in the general area of the damsite. It is concluded that the faults which are present are all ancient ones and are inactive. Present day tectonism indicates that moderate earthquakes occur in the Piedmont and adjacent regions. Severe earthquakes are restricted to a narrow band along the Summerville to Charleston, South Carolina area. Motions attenuated from Summerville-Charleston band to the damsite are low. A probability of recurrence study showed that the operating earthquake has an acceleration of 0.075g (0.01 annual risk). The operating basis earthquake is generally more moderate than the maximum earthquake. It is selected on a probabilistic basis from regional and local geology and seismology studies as being the largest expected to occur during the life of the project; in this case, 100 years.
Author: E. L. Krinitzsky
Publisher:
ISBN:
Category : Clemson Dam (S.C.)
Languages : en
Pages : 272
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Book Description
Seismic source zones have been developed for the southeastern United States that are based on the geology and historic seismicity. A floating earthquake was assigned to each source zone and earthquake motions were attenuated to Hartwell and Clemson Upper and Lower Dams. A maximum credible earthquake at each dam is a far field, MM VII (M = 5.5) earthquake. Horizontal ground motions for this earthquake are as follows: acceleration 190 cm/sec2, velocity 14 cm/sec, and duration 11 sec. Acceleration and response spectra appropriate to these values were selected and are included. Where vertical motions are considered, they may be taken at two-thirds of the horizontal. Keywords: Clemson upper and lower dams, Earthquake motions, Earthquakes, Hartwell dams Seismic zoning. (SDW).
Author: Woodward-Clyde Consultants
Publisher:
ISBN:
Category : Auburn Dam (Calif.)
Languages : en
Pages : 126
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Book Description
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1316
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Book Description
Author: Ellis L. Krinitzsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Blackfoot Dam and Reservoir are situated in southeast Idaho in an area of active tectonism which includes recent volcanism, hot springs, and active faults. Three earthquakes were postulated for design purposes with horizontal motions as follows dur = 65 sec: (1) Local: Distance = 0; Ms = 6.5; accel j- 0.68 g, vel = 60 cm/sec, dur = 10 ces. (2) Near field: Distance = 30 km; Ms = 7.5; accel 0.68 g, vel = 60 cm/sec, dur = 10 sec. 3) Far field: Distance = 80 km; Ms = 7.5; accel = 0.25 g, vel = 48 cm/sec. Accelerograms were recommended for use with these parameters. An operating basis earthquake was based on motions for the severest shaking believed to have occurred at the damsite over the past 100 years. The dam and reservoir are situated on a series of lava flows that could be interbedded with loess. Keywords: Earthquake resistant design; ground motion; Geologic faults; Liquefaction; Seismic data.
Author: U.S. Army Engineer Waterways Experiment Station
Publisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 408
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Book Description
