How big was the Northridge Earthquake in 1994?
How big was the Northridge Earthquake in 1994?
magnitude 6.7
At 4:31 a.m. on Jan. 17, 1994, a hidden fault lurking under the city’s San Fernando Valley neighborhoods unleashed a magnitude 6.7 earthquake that shattered buildings, broke water mains and ignited fires.
How big was the Northridge Earthquake in the 90s?
With a moment magnitude of 6.7, the Northridge earthquake was the strongest earthquake to strike the Los Angeles area since the 1971 San Fernando earthquake, which also had a magnitude of 6.7.
What magnitude was the 1994 earthquake?
magnitude 6
On January 17, 1994, at 4:31 a.m. PST, a magnitude 6. 7 earthquake centered in Northridge struck the southern California area. Known as the Northridge Earthquake, it caused at least 57 fatalities (a subsequent study put the death toll at 72, including heart attacks) and injured thousands.
How big was the Northridge Earthquake surface rupture?
For 8 seconds following the initial break, the rupture propagated upward and northwestward along the fault plane at a rate of about 3 kilometers per second. The rupture front spread out across the fault plane, so that the eventual size of the rupture covered an area of approximately 15 by 20 kilometers.
What earthquake happened in 1994?
1994 Northridge earthquake
The 1994 Northridge earthquake was a moment magnitude 6.7 (Mw), blind thrust earthquake that occurred on the annual Martin Luther King, Jr. Day holiday, on Monday, January 17, 1994. It occurred at 4:30:55 a.m. (PST) and was located in the San Fernando Valley region in the County of Los Angeles.
What is the biggest earthquake in Los Angeles?
On March 17, 2014, a magnitude 4.4 earthquake occurred about two miles south-southeast of Encino. The earthquake was felt in Los Angeles, Ventura, San Bernardino and Orange counties. This was the largest earthquake in Los Angeles since the aftershocks of the 1994 Northridge quake.
How was the 1994 Northridge earthquake caused?
The quake was caused by the sudden rupture of a previously undocumented blind thrust fault . Northridge Earthquake: January 17, 1994. Damage was widespread, as buildings, shopping centers, parking lots and portions of major freeways all collapsed. At least 57 people perished, while thousands more were injured.
Why did the Northridge earthquake of 1994 occur?
1994 Northridge earthquake. Contents. At 4:31 a.m. on January 17, 1994, a 6.7-magnitude quake struck the San Fernando Valley, a densely populated area of Los Angeles located 20 miles northwest of the city’s downtown. The quake was caused by the sudden rupture of a previously undocumented blind thrust fault.
Where is Hector Mine quake?
The strike-slip earthquake occurred in a remote part of the Mojave Desert, 47 miles (76 km) east-southeast of Barstow , California, inside the Twentynine Palms Marine Corps Base. Its name comes from a nearby quarry named Hector Mine, which is located 22 kilometers (14 mi) northwest of the epicenter.
When was Northridge earthquake?
Northridge earthquake. The Northridge Earthquake was an earthquake in Los Angeles that struck on January 17th, 1994 at 4:31 AM in Northridge. It was on Martin Luther King Jr. Day, as well. It was a 6.5 magnitude earthquake.