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.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/TsunamisSumatraJapanSamoa.jpg?itok=9ps_zzWg)
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.
Sources/Usage
Public Domain.