Theoretical P-Wave Travel Times
Magnitude 4.4 SOUTHERN QINGHAI, CHINA
Wednesday, March 20, 2013 at 16:22:39 UTC
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).
| City | Distance (degrees) |
Travel Time (min:secs) |
Arrival Time UTC |
Phase |
|---|---|---|---|---|
| Kathmandu, Nepal | 12.05 | 2:51.7 | 0:56:47.7 | Pn |
| Beijing, China | 16.76 | 3:54.8 | 0:57:50.8 | Pn |
| Tokyo, Japan | 35.40 | 6:55.9 | 1:00:51.9 | P |
| Moscow, Russia | 43.76 | 8:05.5 | 1:02:01.5 | P |
| Agana, Guam | 49.07 | 8:47.2 | 1:02:43.2 | P |
| Bergen, Norway | 59.94 | 10:06.3 | 1:04:02.3 | P |
| Rome, Italy | 62.82 | 10:25.8 | 1:04:21.8 | P |
| Nairobi, Kenya | 66.09 | 10:47.2 | 1:04:43.2 | P |
| London, England | 66.40 | 10:49.2 | 1:04:45.2 | P |
| Anchorage, Alaska | 69.67 | 11:09.8 | 1:05:05.8 | P |
| Brisbane, Australia | 82.81 | 12:24.5 | 1:06:20.5 | P |
| Seattle, Washington | 90.09 | 13:00.1 | 1:06:56.1 | P |
| Honolulu, Hawaii | 90.15 | 13:00.4 | 1:06:56.4 | P |
| Duluth, Minnesota | 97.57 | 13:34.3 | 1:07:30.3 | P |
| Bangor, Maine | 98.64 | 13:39.0 | 1:07:35.0 | Pdiff |
| San Francisco, California | 98.70 | 13:39.3 | 1:07:35.3 | Pdiff |
| Ottawa, Canada | 98.86 | 13:40.1 | 1:07:36.1 | Pdiff |
| Boston, Massachusetts | 101.39 | 13:51.3 | 1:07:47.3 | Pdiff |
| Golden, Colorado | 102.41 | 13:55.8 | 1:07:51.8 | Pdiff |
| New York, New York | 103.35 | 13:60.0 | 1:07:56.0 | Pdiff |
| Los Angeles, California | 103.59 | 14:01.1 | 1:07:57.1 | Pdiff |
| Philadelphia, Pennsylvania | 104.23 | 14:03.9 | 1:07:59.9 | Pdiff |
| Wellington, New Zealand | 105.32 | 14:08.7 | 1:08:04.7 | Pdiff |
| Washington, D.C. | 105.45 | 14:09.3 | 1:08:05.3 | Pdiff |
| St. Louis, Missouri | 105.75 | 14:10.6 | 1:08:06.6 | Pdiff |
| Wichita, Kansas | 105.84 | 14:11.0 | 1:08:07.0 | Pdiff |
| Phoenix, Arizona | 106.37 | 14:13.4 | 1:08:09.4 | Pdiff |
| Albuquerque, New Mexico | 106.48 | 14:13.9 | 1:08:09.9 | Pdiff |
| Knoxville, Tennessee | 108.67 | 14:23.6 | 1:08:19.6 | Pdiff |
| Brownsville, Texas | 117.40 | 15:02.3 | 1:08:58.3 | Pdiff |
| Miami, Florida | 118.71 | 15:08.2 | 1:09:04.2 | Pdiff |
| Mexico City, Mexico | 123.32 | 15:28.6 | 1:09:24.6 | Pdiff |
| San Juan, Puerto Rico | 123.44 | 15:29.2 | 1:09:25.2 | Pdiff |
| Palmer Station, Antarctica | 145.95 | 19:39.0 | 1:13:35.0 | PKPbc |
| Lima, Peru | 155.60 | 19:54.9 | 1:13:50.9 | PKPdf |
Travel Time Information and Calculator
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
