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https://hdl.handle.net/11681/12700| Title: | Geological-seismological evaluation of earthquake hazards at Blackfoot Dam, Idaho |
| Authors: | United States. Army. Corps of Engineers. Walla Walla District Krinitzsky, E. L. |
| Keywords: | Accelerograms Blackfoot Dam, Idaho Blackfoot Reservoir, Idaho Dams Earthquakes Earthquake effects Geology Seismology Earthquake resistant dams |
| Publisher: | Geotechnical Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Technical report (U.S. Army Engineer Waterways Experiment Station) ; GL-87-4. |
| Description: | Technical Report Abstract: 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 : (1) Local: Distance = 0; Ms = 6.5; accel = 0.68 g; vel = 60 cm/sec; dur = 10 sec. (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, dur - 65 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. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/12700 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| TR-GL-87-4.pdf | 12.5 MB | Adobe PDF |  View/Open |