1999 Hector Mine earthquake
E1008730
The 1999 Hector Mine earthquake was a powerful magnitude 7.1 strike-slip earthquake in the Mojave Desert of Southern California that caused widespread ground rupture and was one of the largest earthquakes in the region in the late 20th century.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
earthquake
ⓘ
strike-slip earthquake ⓘ |
| aftershocks | thousands of aftershocks over subsequent months ⓘ |
| casualties | no direct fatalities ⓘ |
| category |
1999 earthquakes
ⓘ
1999 natural disasters in the United States ⓘ Earthquakes in California ⓘ |
| caused | offset of roads and railroad tracks ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| damage |
damage to roads and rail lines
ⓘ
ground cracking and liquefaction in some areas ⓘ light to moderate structural damage ⓘ |
| date |
1999-10-16
ⓘ
October 16, 1999 ⓘ |
| depth | about 20 km ⓘ |
| distanceFrom |
about 44 km north of Joshua Tree, California
ⓘ
about 47 km east of Barstow, California ⓘ |
| epicenterNear |
Hector Mine
NERFINISHED
ⓘ
Twentynine Palms, California NERFINISHED ⓘ |
| faultType | strike-slip ⓘ |
| injuries | minor injuries ⓘ |
| localTime | 02:46:44 PDT ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Mojave Desert ⓘ San Bernardino County ⓘ
surface form:
San Bernardino County, California
Southern California ⓘ |
| maximumMercalliIntensity | VII (Very strong) ⓘ |
| maximumSurfaceDisplacement | about 5.5 m ⓘ |
| momentMagnitude | 7.1 ⓘ |
| notableFor |
extensive surface fault rupture in a sparsely populated area
ⓘ
one of the largest late 20th-century earthquakes in Southern California ⓘ |
| observedWith | strong-motion seismographs across Southern California ⓘ |
| occurredInTectonicSetting | transform plate boundary between Pacific Plate and North American Plate ⓘ |
| partOf | seismicity of the Eastern California Shear Zone ⓘ |
| precededBy | 1992 Landers earthquake NERFINISHED ⓘ |
| recordedBy | United States Geological Survey NERFINISHED ⓘ |
| region | Eastern California Shear Zone NERFINISHED ⓘ |
| rupturedFault |
Bullion fault
NERFINISHED
ⓘ
Hector Mine fault zone NERFINISHED ⓘ Lavic Lake fault NERFINISHED ⓘ |
| scientificSignificance |
important for studies of triggered seismicity and fault interaction
ⓘ
used to study dynamic triggering of distant earthquakes ⓘ |
| seismicMoment | on the order of 10^19 N·m ⓘ |
| surfaceRuptureLength | about 40 km ⓘ |
| time | 09:46:44 UTC ⓘ |
| triggeredBy | 1992 Landers earthquake (static stress changes) ⓘ |
| USGSEventId | ci14383980 ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.