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Earthquake Hazards Program

Magnitude 3.9 NORTHERN ALASKA

Thursday, March 20, 2008 at 17:01:48 UTC

Theoretical P-Wave Travel Times

Theoretical P-wave Travel Times

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The travel times are computed using the spherically-symmetric IASP91 reference earth velocity model. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees).

Theoretical P-Wave Travel Times
City Distance
(degrees)
Travel Time
(min:secs)
Arrival Time
UTC
Phase
Anchorage, Alaska 8.76 2:06.317:03:56.3Pn
Seattle, Washington 25.12 5:24.417:07:14.4P
San Francisco, California 34.68 6:49.117:08:39.1P
Duluth, Minnesota 35.01 6:51.917:08:41.9P
Golden, Colorado 37.13 7:10.117:09:00.1P
Los Angeles, California 39.14 7:27.017:09:17.0P
Albuquerque, New Mexico 41.07 7:43.017:09:33.0P
Phoenix, Arizona 41.17 7:43.817:09:33.8P
Wichita, Kansas 41.36 7:45.317:09:35.3P
Ottawa, Canada 41.84 7:49.317:09:39.3P
St. Louis, Missouri 42.84 7:57.417:09:47.4P
Bangor, Maine 44.77 8:13.017:10:03.0P
Boston, Massachusetts 46.15 8:23.917:10:13.9P
New York, New York 46.57 8:27.217:10:17.2P
Philadephia, Pennsylvania 46.85 8:29.417:10:19.4P
Knoxville, Tennessee 47.01 8:30.617:10:20.6P
Washington, D.C. 47.14 8:31.717:10:21.7P
Bergen, Norway 48.55 8:42.617:10:32.6P
Honolulu, Hawaii 49.00 8:46.017:10:36.0P
Tokyo, Japan 51.34 9:03.817:10:53.8P
Brownsville, Texas 52.33 9:11.217:11:01.2P
Moscow, Russia 54.67 9:28.417:11:18.4P
Beijing, China 55.39 9:33.617:11:23.6P
London, England 56.55 9:41.917:11:31.9P
Mexico City, Mexico 57.96 9:51.917:11:41.9P
Miami, Florida 58.02 9:52.317:11:42.3P
Rome, Italy 67.5610:55.917:12:45.9P
San Juan, Puerto Rico 69.5711:08.517:12:58.5P
Agana, Guam 70.0811:11.617:13:01.6P
Kathmandu, Nepal 75.8311:45.717:13:35.7P
Lima, Peru 94.4713:19.617:15:09.6P
Brisbane, Australia 106.1314:11.617:16:01.6Pdiff
Nairobi, Kenya 111.5114:35.517:16:25.5Pdiff
Wellington, New Zealand 114.3214:48.017:16:38.0Pdiff
Palmer Station, Antarctica 148.3019:41.617:21:31.6PKPdf

Travel Time Information and Calculator

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver


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