1992 Big Bear earthquake
Encyclopedia
The 1992 Big Bear earthquake was an earthquake
that occurred at 08:05 PDT
local time (15:05 UTC) on 28 June 1992 in Big Bear Lake, California
, with a magnitude
of 6.5. This earthquake occurred three hours after the 7.3 magnitude Landers earthquake
, which was centered 22 miles (35.4 km) to the east. The closely timed occurrence of these earthquakes is an often-cited example of a regional earthquake sequence.
Earthquake
An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time...
that occurred at 08:05 PDT
Pacific Time Zone
The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time . The clock time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory. During daylight saving time, its time offset is UTC-7.In the United States...
local time (15:05 UTC) on 28 June 1992 in Big Bear Lake, California
Big Bear Lake, California
Big Bear Lake is a city in San Bernardino County, California along the south shore of Big Bear Lake, located northeast of the city of San Bernardino. The population was 5,019 at the 2010 census, down from 5,438 at the 2000 census...
, with a magnitude
Moment magnitude scale
The moment magnitude scale is used by seismologists to measure the size of earthquakes in terms of the energy released. The magnitude is based on the seismic moment of the earthquake, which is equal to the rigidity of the Earth multiplied by the average amount of slip on the fault and the size of...
of 6.5. This earthquake occurred three hours after the 7.3 magnitude Landers earthquake
1992 Landers earthquake
The 1992 Landers earthquake was a magnitude 7.3 earthquake that occurred on June 28, 1992 with an epicenter near the town of Landers, California...
, which was centered 22 miles (35.4 km) to the east. The closely timed occurrence of these earthquakes is an often-cited example of a regional earthquake sequence.