Location of earthquake near subduction zone and on oceanic plate

Line drawing of cross-section of oceanic crust showing the location and kind of earthquake that may or may not cause a tsunami.

Detailed Description

The 2009 Samoa earthquake and tsunami resulted primarily from slip on a normal fault in the “outer rise,” a bulge in the seafloor caused by bending of the oceanic plate.


Image Dimensions: 1500 x 961

Location Taken: US