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1949 Olympia earthquake

From Wikipedia, the free encyclopedia

1949 Olympia earthquake
1949 Olympia earthquake is located in Washington (state)
Olympia
Olympia
Seattle
Seattle
Tacoma
Tacoma
1949 Olympia earthquake
UTC time1949-04-13 19:55:43
ISC event896466
USGS-ANSSComCat
Local dateApril 13, 1949 (1949-04-13)
Local time11:55:44
Duration~ 20 s [1]
Magnitude7.1 Mw[2]
Depth50 km (31 mi) [3]
Epicenter47°00′N 122°32′W / 47.0°N 122.53°W / 47.0; -122.53 [3]
Areas affectedPuget Sound region
Washington
United States
Total damage$25 million [4]
Max. intensityVIII (Severe) [4]
Peak acceleration.25g [1]
Casualties8 killed [4]
At least 64 injured [5]

The 1949 Olympia earthquake occurred on April 13 at 11:55:44 local time with a magnitude of 7.1[2] and a maximum Mercalli Intensity of VIII (Severe). The earthquake was triggered more than 50 kilometres (31 mi) deep.[2] The shock was located in the area between Olympia and Tacoma, and was felt throughout the state, as well as parts of Oregon, British Columbia, Idaho, and Montana. It is the largest recorded earthquake to occur in the Puget Sound region of Washington.

Eight people were killed, including young crossing guard Marvin Klegman who shielded a second-grader from falling bricks.[2] At least 64 people were injured, and the total damage is estimated at $25 million.

Damage

Damage in Olympia from the earthquake was estimated between $500,000 and $1 million by Governor Arthur B. Langlie.[6] Eight buildings on the State Capital campus were damaged by the earthquake, as well as the Old Capitol Building in downtown Olympia.[7] A 23-ton cradle on the east tower of the Tacoma Narrows Bridge fell 500 feet, injuring two men.The earthquake caused geysers to explode along the railroad track in the Tacoma tidal flats and in Puyallup. Chimneys throughout western Washington collapsed.[2]

See also

References

  1. ^ a b Baker, G. E.; Langston, C. A. (1987), "Source parameters of the 1949 magnitude 7.1 south Puget Sound, Washington, earthquake as determined from long-period body waves and strong ground motions", Bulletin of the Seismological Society of America, 77 (5): 1546
  2. ^ a b c d e McNair-Huff, Rob & Natalie (2016). Washington Disasters. Rowman & Littlefield. pp. 129–134. ISBN 978-1-4930-1322-7.
  3. ^ a b ISC (2014), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 1.05, International Seismological Centre
  4. ^ a b c Stover, C. W.; Coffman, J. L. (1993), Seismicity of the United States, 1568–1989 (Revised), U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, pp. 380, 385, 386
  5. ^ "Earthquake damage in Pioneer Square, Seattle, April 13, 1949". Museum of History and Industry. Retrieved 16 November 2017.
  6. ^ "Olympia Damage Half Million, Says Langlie". The Seattle Daily Times. April 19, 1949. p. 7.
  7. ^ "Earthquake Listed as Major; 5 Dead; Damage in Millions". The Seattle Daily Times. April 13, 1949. p. 1.

Further reading

External links


This page was last edited on 6 August 2020, at 06:49
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