Insurance Topic
Earthquake
Earthquake is a natural geophysical event involving sudden ground movement caused by seismic energy release, commonly referenced in property insurance exclusions and specialty coverage definitions.
Definition
An earthquake is the shaking of the Earth’s surface resulting from the rapid release of accumulated seismic stress along geological faults or tectonic boundaries, producing ground motion capable of causing structural damage.
Structural Characteristics
- Seismic energy release originating below the Earth’s surface.
- Ground motion transmitted as seismic waves.
- Variable intensity, duration, and geographic impact.
- Potential secondary effects such as ground rupture or subsidence.
Parameters & Conditions
- Magnitude and depth of seismic activity influence damage potential.
- Local soil composition affects wave amplification.
- Policy definitions often group earthquake within earth movement constructs.
- Coverage treatment depends on policy form and endorsements.
Topic Relationships
Exceptions, Limitations & Boundaries
Earthquake as a peril does not encompass damage solely caused by unrelated forces such as flood or wear, and its insurance treatment is commonly excluded unless affirmatively reintroduced through specific policy mechanisms.
Earthquake: Definitional FAQ
Is earthquake the same as earth movement?
Earthquake is a specific form of earth movement; insurance policies often use broader earth movement language that includes earthquakes.
Does earthquake include aftershocks?
Yes. Aftershocks are generally considered part of the same seismic event sequence.
Is earthquake damage always insured?
No. Earthquake damage is commonly excluded in standard property policy forms unless separately addressed.