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Earthquake Hazards Program

Magnitude 8.3 HOKKAIDO, JAPAN REGION

2003 September 25 19:50:06 UTC

Preliminary Earthquake Report

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

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
Tokyo, Japan 7.19 1:42.819:51:50.8Pn
Beijing, China 20.68 4:37.119:54:45.1P
Agana, Guam 28.61 5:53.219:56:01.2P
Anchorage, Alaska 43.16 7:57.419:58:05.4P
Kathmandu, Nepal 49.11 8:44.219:58:52.2P
Honolulu, Hawaii 52.81 9:12.019:59:20.0P
Seattle, Washington 62.6610:21.320:00:29.3P
Moscow, Russia 64.1810:31.320:00:39.3P
San Francisco, California 68.3910:58.320:01:06.3P
Brisbane, Australia 69.8411:07.320:01:15.3P
Bergen, Norway 72.2911:22.120:01:30.1P
Los Angeles, California 73.3611:28.520:01:36.5P
Golden, Colorado 77.3111:51.220:01:59.2P
Duluth, Minnesota 78.5311:58.020:02:06.0P
Albuquerque, New Mexico 79.7712:04.820:02:12.8P
London, England 81.5712:14.420:02:22.4P
Wichita, Kansas 82.9612:21.620:02:29.6P
Rome, Italy 85.4712:34.420:02:42.4P
St. Louis, Missouri 85.7712:35.920:02:43.9P
Ottawa, Canada 85.9712:36.920:02:44.9P
Wellington, New Zealand 87.6812:45.220:02:53.2P
Bangor, Maine 88.6812:49.920:02:57.9P
Boston, Massachusetts 90.2312:57.220:03:05.1P
Knoxville, Tennessee 90.3312:57.620:03:05.6P
New York, New York 90.7212:59.420:03:07.4P
Philadephia, Pennsylvania 90.9813:00.720:03:08.7P
Washington, D.C. 91.2213:01.820:03:09.8P
Brownsville, Texas 91.8313:04.620:03:12.6P
Mexico City, Mexico 95.6713:22.120:03:30.1P
Miami, Florida 101.1813:46.720:03:54.7Pdiff
Nairobi, Kenya 103.3413:56.320:04:04.3Pdiff
San Juan, Puerto Rico 113.6614:42.120:04:50.1Pdiff
Lima, Peru 133.6316:10.820:06:18.8Pdiff
Palmer Station, Antarctica 150.3219:41.820:09:49.8PKPdf


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