Environment ❯ Natural Hazards

Seismic Activity

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New Study Finds Cascadia and San Andreas Quakes Have Often Struck in Tandem

Seafloor cores at the Mendocino Triple Junction reveal stacked turbidites indicating closely timed Cascadia–San Andreas events.

Study Finds Cascadia Megathrust Often Triggers Northern San Andreas in Closely Timed Quakes

Canada Updates Seismic Model After Study Flags Yukon’s Tintina Fault as 7.5-Magnitude Threat

Tintina Fault, Once Dormant, Is Straining Toward a Magnitude 7.5+ Quake