Magnitude 6.7 Earthquake Strikes South Sandwich Islands Region
MARIPOSA (CBS SF) -- A magnitude 6.7 earthquake struck the South Sandwich Islands region Monday afternoon.
The quake struck at a depth of 10km about ninety miles NNW of Visokoi Island shortly after 2 p.m. Pacific Time.
Deeper quakes are less noticeable while a shallow quake--in the 0 to 40 mile depth range--can feel much stronger than their actual reported magnitude. Quakes just below the earth's surface, in the 0 to 10 miles range, can cause even more damage at lower magnitudes.
About an hour later a strong undersea earthquake struck near Japan.
COMPLETE QUAKE COVERAGE: CBS Earthquake Resource Center
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Strong earthquakes with an epicenter off the coast can trigger tsunamis, depending on the size and type of the fault movement. The Pacific Tsunami Warning Center tracks earthquake data for the West Coast.
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