1992 Landers earthquake
E1007500
The 1992 Landers earthquake was a powerful magnitude 7.3 strike-slip earthquake in Southern California that ruptured multiple faults, caused widespread damage, and significantly advanced understanding of complex fault systems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1992 Landers earthquake canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12854238 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 1992 Landers earthquake Context triple: [Eastern California Shear Zone, notableEarthquake, 1992 Landers earthquake]
-
A.
1983 Coalinga earthquake
The 1983 Coalinga earthquake was a powerful magnitude 6.5 seismic event in central California that caused significant damage to the town of Coalinga and surrounding areas.
-
B.
1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
-
C.
1994 Northridge earthquake
The 1994 Northridge earthquake was a powerful and destructive magnitude 6.7 earthquake that struck the Los Angeles area of Southern California on January 17, 1994, causing widespread damage and loss of life.
-
D.
Loma Prieta
Loma Prieta is a prominent peak in California’s Santa Cruz Mountains, best known for lending its name to the devastating 1989 Loma Prieta earthquake.
-
E.
1868 Hayward earthquake
The 1868 Hayward earthquake was a powerful and destructive seismic event that struck the San Francisco Bay Area in California, causing extensive damage and loss of life and serving as a key historical benchmark for seismic risk on the Hayward Fault.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 1992 Landers earthquake Target entity description: The 1992 Landers earthquake was a powerful magnitude 7.3 strike-slip earthquake in Southern California that ruptured multiple faults, caused widespread damage, and significantly advanced understanding of complex fault systems.
-
A.
1983 Coalinga earthquake
The 1983 Coalinga earthquake was a powerful magnitude 6.5 seismic event in central California that caused significant damage to the town of Coalinga and surrounding areas.
-
B.
1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
-
C.
1994 Northridge earthquake
The 1994 Northridge earthquake was a powerful and destructive magnitude 6.7 earthquake that struck the Los Angeles area of Southern California on January 17, 1994, causing widespread damage and loss of life.
-
D.
Loma Prieta
Loma Prieta is a prominent peak in California’s Santa Cruz Mountains, best known for lending its name to the devastating 1989 Loma Prieta earthquake.
-
E.
1868 Hayward earthquake
The 1868 Hayward earthquake was a powerful and destructive seismic event that struck the San Francisco Bay Area in California, causing extensive damage and loss of life and serving as a key historical benchmark for seismic risk on the Hayward Fault.
- F. None of above. chosen
Statements (73)
| Predicate | Object |
|---|---|
| instanceOf |
earthquake
ⓘ
megathrust-free intraplate event ⓘ strike-slip earthquake ⓘ |
| advancedUnderstandingOf |
complex fault systems
ⓘ
dynamic triggering of earthquakes ⓘ fault segmentation ⓘ stress transfer between faults ⓘ |
| affectedRegion |
Las Vegas, Nevada
NERFINISHED
ⓘ
Phoenix, Arizona NERFINISHED ⓘ Southern California NERFINISHED ⓘ western Arizona NERFINISHED ⓘ |
| aftershockSequenceDuration | several months ⓘ |
| BigBearAftershockMagnitude | 6.5 ⓘ |
| BigBearAftershockTimeDifference | about 3 hours later ⓘ |
| casualties | 1 fatality ⓘ |
| caused |
damage to highways and roads
ⓘ
damage to mobile homes ⓘ damage to power lines ⓘ damage to water lines ⓘ ground cracking ⓘ landslides ⓘ rockfalls ⓘ structural damage to buildings ⓘ surface fault rupture ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| date | 1992-06-28 ⓘ |
| depth | about 8 km ⓘ |
| economicLoss | about 92 million USD ⓘ |
| epicenterNear |
Landers, California
NERFINISHED
ⓘ
Yucca Valley, California NERFINISHED ⓘ |
| faultType | right-lateral strike-slip ⓘ |
| feltIn |
Las Vegas
NERFINISHED
ⓘ
Los Angeles NERFINISHED ⓘ Phoenix NERFINISHED ⓘ San Diego NERFINISHED ⓘ |
| injuries | over 400 injuries ⓘ |
| JoshuaTreeMagnitude | 6.1 ⓘ |
| localTimePDT | 1992-06-28T04:57:34-07:00 ⓘ |
| locatedIn |
Mojave Desert
ⓘ
San Bernardino County NERFINISHED ⓘ Southern California ⓘ |
| maximumMercalliIntensity | IX ⓘ |
| momentMagnitude | 7.3 ⓘ |
| nearbyMajorFaultSystem | San Andreas Fault system NERFINISHED ⓘ |
| notableAftershock | 1992 Big Bear earthquake NERFINISHED ⓘ |
| notableFor |
high-quality strong-motion recordings
ⓘ
insights into earthquake rupture propagation ⓘ long, multi-fault rupture ⓘ remote dynamic triggering at large distances ⓘ |
| partOf | 1992 Southern California earthquake sequence ⓘ |
| plateBoundaryContext | Pacific Plate–North American Plate boundary NERFINISHED ⓘ |
| precededBy | 1992 Joshua Tree earthquake NERFINISHED ⓘ |
| recordedBy | Southern California Seismic Network NERFINISHED ⓘ |
| rupturedFault |
Camp Rock Fault
NERFINISHED
ⓘ
Emerson Fault NERFINISHED ⓘ Homestead Valley Fault NERFINISHED ⓘ Johnson Valley Fault NERFINISHED ⓘ Kickapoo Fault NERFINISHED ⓘ |
| ruptureDirection | north-northwest ⓘ |
| rupturedMultipleFaults | true ⓘ |
| ruptureLength | about 70 km ⓘ |
| slipMaximum | about 6 meters ⓘ |
| studiedBy |
United States Geological Survey
NERFINISHED
ⓘ
seismologists worldwide ⓘ |
| surfaceWaveMagnitude | 7.5 ⓘ |
| timeUTC | 1992-06-28T11:57:34Z ⓘ |
| triggered |
1992 Big Bear earthquake
ⓘ
remote dynamic triggering of small earthquakes in Long Valley Caldera ⓘ remote dynamic triggering of small earthquakes in Mammoth Lakes area ⓘ remote dynamic triggering of small earthquakes in Yellowstone ⓘ |
| triggeredBy | stress transfer on regional faults ⓘ |
| tsunami | no tsunami generated ⓘ |
| USGSEventId | ci314458 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: 1992 Landers earthquake Description of subject: The 1992 Landers earthquake was a powerful magnitude 7.3 strike-slip earthquake in Southern California that ruptured multiple faults, caused widespread damage, and significantly advanced understanding of complex fault systems.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.