1992 Big Bear earthquake
| File:USGS Shakemap - 1992 Big Bear earthquake.jpg | |
 Los Angeles
Palm Springs
 |
|
| Magnitude | 6.5 ṃ [1] |
|---|---|
| Depth | 3.1 miles (5 km) [2] |
| Epicenter | Lua error in package.lua at line 80: module 'strict' not found. [2] |
| Type | Strike-slip [2] |
| Areas affected | Inland Empire Southern California United States |
| Total damage | Moderate [3] |
| Max. intensity | VIII (Severe) [4] |
| Foreshocks | 5.2 ṃ June 28 at 14:43 [5] |
| Aftershocks | 5.3 ṃ July 9 at 01:43 [5] 5.2 ṃ Nov 27 at 16:00 [5] 5.1 ṃ Dec 4 at 02:08 [5] |
| Casualties | Some injuries [4] |
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 kilometers (3.1 mi) and caused landslides in the San Bernardino Mountains.[6]
The Big Bear earthquake happened just east of the "Big Bend" of the San Andreas Fault, where it takes an offset towards Los Angeles, and 3 hours 26 minutes after the M 7.3 1992 Landers earthquake occurred 22 miles (35 km) to the east. The Big Bear earthquake was first believed to be an aftershock of the Landers quake. However, the United States Geological Survey determined that this was a separate, but related, earthquake. These two earthquakes are considered a regional earthquake 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.[7]
On that day, proceeding the earthquake an experimental aircraft crashed at the Big Bear Airport. Reenactment and some footage was taped and aired on the CBS TV series Rescue 911
See also
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 5.2 5.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- M 6.3 - 7km SSE of Big Bear City, CA – United States Geological Survey
- The International Seismological Centre has a bibliography and/or authoritative data for this event.
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