An earthquake caused the tsunami!
2011
An earthquake caused the Sumatra Tsunami.
Earthquake
No, the earthquake in the ocean cause the water to make the tsunami
Yes.
9.0 earthquake
A tsunami is an ocean wave that is caused by an earthquake. It would occur after an earthquake.
bad
A tsunami did occur after the Christchurch earthquake, but it was relatively small and localized. The earthquake did not generate a large enough displacement of water to create a significant tsunami. Additionally, the orientation of the fault line and the shallow depth of the earthquake further limited the potential for a widespread tsunami.
It was triggered by an earthquake.
It is most likely to have just been caused randomly by the three plates that board Japan or the rather small Chinese earthquake a day prior to the Japanese Earthquake and Tsunami.