Reducing Tsunami Hazards along U.S. Coastlines
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On April 25–26, 1992, a swarm of large earthquakes rattled northern California, injuring 98 people and causing $66 million dollars in damage. The swarm began with a Ms 7.1 thrust earthquake that generated a small tsunami recorded at tide stations in California, Oregon, and Hawaii. This earthquake/tsunami event provided importalt evidence that the Cascadia Subduction Zone is seismically active and that tsunamis are likely from earthquakes occurring along the zone. This new evidence also led the National Oceanic and Atmospheric Administration (NOAA), the U.S. agency responsible for tsunami warnings, to evaluate the state of tsunami preparedness for communities potentially affected.
Technology exists to produce tsunami inundation maps for emergency preparedness.
Technology exists to issue tsunami warnings within 5 minutes for earthquakes occurring along U.S. coastlines.
Technology exists to detect tsunamis in the offshore ocean.
Tsunami education for local and distant tsunami is deficient for west coast decision makers and residents.
KeywordsTsunami Wave Coastal Community Federal Emergency Management Agency Tsunami Hazard Tsunami Warning
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- Atwater, B.F., AR. Nelson, J.J. Clague, GA Carver, D.K. Yamagudni, P.T. Bobrowsky, J. Bourgeois, M.E. Darienzo, W.C. Grant, E. Hemphill-Haley, H.M. Kelsey, G.C. Jacoby, S.P. Nishenko, S.P. Palmer, C.D. Peterson, and MA Reinhart, 1995 Summary of coastal geologic evidence for past great earthquakes at the Cascadia subduction zone. Earthquake spectra, 11(1), 1–18.CrossRefGoogle Scholar
- Bernard, E.N., C. Mader, G. Curtis, and K. Satake, 1994. Tsunami Inundation Model Study of Eureka and Crescent City, California. NOAA Tech. Memo. ERL PMEL-103, 80 pp.Google Scholar
- Blackford, M., and H. Kanamori, 1995. Tsunami Warning System Workshop Report (September 14–15, 1994). NOAA Tedi. Memo. ERL PMEL-105, 94 pp.Google Scholar
- Gonzalez, F.I., and E.N. Bernard, 1992. The Cape Mendocino tsunami. Earthquakes and Volcanoes, 23, 135138.Google Scholar
- Good, J., 1995. Tsunami Education Planning Workshop, Findings and Recommendations. NOAA Tenn. Memo. ERL PMEL-105, 39 ppGoogle Scholar
- Oppenheimer, D.,G. Beroza, G. Carver, L. Denglar, J. Eaton, L. Gee, F. Gonzalez, A Jayko, W.H. Li, M. Lisowsi, M. Magee, G. Marshall, M. Murray, R. McPherson, B. Romanowicz, K. Satake, R. Simpson, P. Somerville, R. Stein, and D. Valentine, 1993. The Cape Mendocino earthquake sequence of April 1992. Science, 261, 433–438.Google Scholar
- Toppozada, T., G. Borchardt, W. Haydon, and M. Peterson, 1994. Planning scenario in Humboldt and Del Norte Counties for a great earthquake on the Cascadia Subduction Zone. California Department of Conservation, Division of Mines and Geology, Sacramento, CA, Special Publication 115, November 1994.Google Scholar
- Weave, C.S., and K.M. Shedlock, 1992. Estimates of seismic source regions from consideration of the earthquake distribution and regional tectonics in the Pacific Northwest, U.S. Geological Survey Open-File Report 91–441, 51 pp.Google Scholar
- Yanagi, B.S., 1996. Tsunami preparedness in Hawaii. In: Coastal earthquakes and tsunamis: Reducing the risks, J.W. Charland and J.W. Good, eds., Corvallis, OR, Oregon Sea Grant.Google Scholar