From Surf Wiki (app.surf) — the open knowledge base

1992 Big Bear earthquake

Earthquake in California

Field	Value
title	1992 Big Bear earthquake
timestamp	1992-06-28 15:05:33
isc-event	289115
anss-url	ci3031425
local-date
local-time	08:05:33 PDT
map	USGS Shakemap - 1992 Big Bear earthquake.jpg
map2	{{Location map+	USA California
{{Location map~	California	lat	34.05	long=-118.25	label=Los Angeles	label_size=100	position=left	mark=Green pog.svg}}
{{Location map~	California	lat	33.82	long=-116.53	label=Palm Springs	label_size=100	position=right	mark=Green pog.svg}}
{{Location map~	California	lat	34.29	long=-116.82	mark=Bullseye1.png	marksize=40}}
relief	1
width	260
float	center	border=infobox
magnitude	6.5
depth	5 km
location
type	Strike-slip
countries affected	Inland Empire
Southern California
United States
damage	≥$60 million
intensity
foreshocks	5.2 June 28 at 14:43
aftershocks	5.3 July 9 at 01:43
5.2 Nov 27 at 16:00
5.1 Dec 4 at 02:08
casualties	63 injuries

|isc-event = 289115 |anss-url = ci3031425 |local-date = |local-time = 08:05:33 PDT Southern California United States 5.2 Nov 27 at 16:00 5.1 Dec 4 at 02:08

The 1992 Big Bear earthquake occurred at 08:05:33 PDT on June 28 in Big Bear Lake, California, with a moment magnitude of 6.5 and a maximum perceived intensity of VIII (Severe) on the Mercalli intensity scale. The earthquake occurred at a relatively shallow depth of 5 km.

Earthquake

The Big Bear earthquake happened east of Los Angeles, and 3 hours 8 minutes after the M 7.3 1992 Landers earthquake occurred 22 miles (35 km) to the east. It was first believed to be an aftershock of the larger event. However, the United States Geological Survey determined that it was a separate, but related, shock. The two events are considered a regional sequence, rather than a main shock and aftershock. They were part of a complex pattern of regional stress adjustment that also led to the 1999 Hector Mine earthquake.{{Cite journal |doi-access= free

Damage

In the Big Bear area, severe damage was reported. Roughly 2,600 chimneys were destroyed, 20 homes were knocked off their foundations, and many unreinforced masonry structures partially or completely collapsed. Ruptured gas pipelines and dislodged fuel tanks caused by the tremor sparked fires that destroyed additional structures. blocking several roadways and creating dust clouds that led many to believe forest fires were occurring. The Stanfield Cutoff was heavily damaged, and had to be closed for several days for repairs.

Marilyn Quayle, wife of then-Vice President Dan Quayle, toured the damage in Big Bear. In total, approximately 40 percent of structures in the Big Bear area suffered some degree of damage, amounting to more than $60 million in losses. 63 injuries were attributed to this earthquake, most of which were minor.

References

Eland, Ron. (June 27, 2012). "Shake, rattle and roll: 20 years later".
"The Landers / Big Bear Earthquakes of June 28, 1992". John A. Martin & Associates, Inc..
"Big Bear Earthquake". [[Southern California Earthquake Center]].
(1995). "Analysis of broadband records from the 28 June 1992 Big Bear earthquake: Evidence of a multiple-event source". Bulletin of the Seismological Society of America.
ISC. (January 19, 2015). "ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009)". [[International Seismological Centre]].
(September 4, 2009). "PAGER-CAT Earthquake Catalog". United States Geological Survey.
"M6.5 – Southern California". United States Geological Survey.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

earthquakes-in-california 1992-earthquakes 1992-in-california 1992-natural-disasters-in-the-united-states big-bear-lake,-california strike-slip-earthquakes

Want to explore this topic further?

Ask Mako anything about 1992 Big Bear earthquake — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report