| PRINCIPAL
EARTHQUAKE PARAMETERS (from University of Washington) ------------------------------- Magnitude : 6.8 Event Date & Time : 02/28/2001 10:54:33 AM PST 02/28/2001 18:54:33 UTC Location : 47.1525 N 122.7197 W 47 deg 9 min North 122 deg 43 min West |
Depth
: 33.0 miles / 52.4 km deep Location Quality : Excellent Number of readings : 56 Nearest seismograph: 4 miles/ 7 km 10.9 miles / 17.6 km NE of Olympia, WA 14.7 miles / 23.7 km WSW of Tacoma, WA 35.7 miles / 57.5 km SSW of Seattle, WA |
| Predicted
P-Wave Travel Times (from the USGS) |
||||
| City |
Distance (degrees) |
Travel Time (min:secs) |
Arrival Time UTC |
Phase |
| Golden, Colorado | 14.70 | 3:24.8 | 18:57:57.8 | Pn |
| Anchorage, Alaska | 21.03 | 4:39.3 | 18:59:12.3 | P |
| Ottawa, Canada | 32.15 | 6:22.5 | 19:00:55.5 | P |
| Mexico City, Mexico | 33.69 | 6:35.9 | 19:01:08.9 | P |
| Honolulu, Hawaii | 38.31 | 7:15.3 | 19:01:48.3 | P |
| San Juan, Puerto Rico | 54.06 | 9:19.0 | 19:03:52.0 | P |
| Bergen, Norway | 64.83 | 10:33.4 | 19:05:06.4 | P |
| Tokyo, Japan | 69.43 | 11:02.6 | 19:05:35.6 | P |
| London, England | 70.08 | 11:06.5 | 19:05:39.5 | P |
| Lima, Peru | 71.68 | 11:16.3 | 19:05:49.3 | P |
| Moscow, Russia | 76.17 | 11:42.5 | 19:06:15.5 | P |
| Beijing, China | 78.59 | 11:56.1 | 19:06:29.1 | P |
| Agana, Guam | 81.97 | 12:14.2 | 19:06:47.2 | P |
| Rome, Italy | 82.87 | 12:18.9 | 19:06:51.9 | P |
| Kathmandu, Nepal | 101.32 | 13:45.0 | 19:08:18.0 | Pdiff |
| Wellington, New Zealand | 104.05 | 13:57.1 | 19:08:30.1 | Pdiff |
| Palmer Station, Antarctica | 122.74 | 15:20.1 | 19:09:53.1 | Pdiff |
|
Nairobi, Kenya |
130.97 | 15:56.6 | 19:10:29.6 | Pdiff |
| Images (from various sources) |
|
 Map of Pacific Northwest and historic seismicity |
 3-D map of event |
 Map of region with event highlighted (USGS Website) |
 University of Washington Archive |
 BH data from station COR in Corvallis, OR |
 LH data from station ANMO in Albuquerque, NM |
| General Information |
|
Information about the Nisqually earthquake (IRIS E&O) University of Washington report Southern California Earthquake Center Report - A Comparison of the February 28, 2001, Nisqually, Washington, and January 17, 1994, Northridge, California, Earthquakes Earthquake History of Washington from the USGS Earthquake History of Cascadia from the University of Washington Earthquake Hazards in Oregon and Washington from the University of Washington FAQ on EQs in Washington and Oregon from the University of Washington
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| Data Links |
|
Earthquake Clearinghouse Page - University of Washington 3-D View of Focal Mechanism of M 6.8 Nisqually Earthquake PANGA (Pacific Northwest Geodetic Array) - Coseismic geodetic models and surface velocities will be posted here. Rensselaer Polytechnic Institute - GPS results |
| Sounds |
|
Most people don't associate earthquakes with music. Ray Styles in Washington state is an exception. He converts earthquake data to music for fun. Here are two midi sound files created from data from the Nisqually Earthquake: |