Magnitude 7.3 Quake Jolts Area of Aleutians

Source: Reuters

Magnitude 7.3 quake jolts area of Aleutians

TOKYO (Reuters) - An earthquake of magnitude 7.3 jolted areas of Alaska's Aleutian Islands in the northern Pacific on Wednesday, Japan's Meteorological Agency said.

The quake hit at 0430 EST at a depth of 40 kilometers, the agency said.


Read more: http://news.yahoo.com/s/nm/20071219/ts_nm/quake_aleutians_dc

http://quake.usgs.gov/recenteqs/latest.htm

http://quake.wr.usgs.gov/recenteqs/Quakes/ci10295849.htm

== PRELIMINARY EARTHQUAKE REPORT ==
California Integrated Seismic Net
USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR
Version #C: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A light earthquake occurred at 4:14:09 AM (PST) on Wednesday, December 19, 2007.
The magnitude 4.0 event occurred 11 km (7 miles) SSW of town of Big Bear Lake, CA.
The hypocentral depth is 7 km ( 4 miles).

Magnitude 4.0 - local magnitude (ML)
Time Wednesday, December 19, 2007 at 4:14:09 AM (PST)
Wednesday, December 19, 2007 at 12:14:09 (UTC)
Distance from town of Big Bear Lake, CA - 11 km (7 miles) SSW (212 degrees)
Running Springs, CA - 13 km (8 miles) ESE (115 degrees)
Mt. San Gorgonio, CA - 15 km (9 miles) WNW (295 degrees)
San Bernardino, CA - 29 km (18 miles) E (84 degrees)
Los Angeles Civic Center, CA - 118 km (73 miles) E (84 degrees)
Coordinates 34 deg. 9.4 min. N (34.157N), 116 deg. 58.6 min. W (116.976W)
Depth 7.1 km (4.4 miles)
Location Quality Good

mag 4 quakes are so frequent they must be handled by building codes etc
Over 6 and it quickly becomes an issue since these are logarithmic scales.