Scientists use many terms when describing what happens during a tsunami.

Some of these terms are mapped out below.

Some of these terms are mapped out below.

Inundation: when a tsunami wave covers normally dry land.

Inundation distance: the distance from the shoreline to the limit of inundation.

Limit of tsunami inundation: the maximum point onshore that the tsunami reached.

Run-up elevation: the elevation above sea level where the tsunami wave terminated.

Sea level: the global average height of the ocean's surface to which all land elevatoins and submarine depths are referred.

Shoreline: the point on the beach corresponding to sea level.

Tsunami elevation: the difference between the wave height and sea level.

Tsunami flow depth: the difference between the wave height and the ground.

Image courtesy of Alaska Earthquake Center.

Inundation distance: the distance from the shoreline to the limit of inundation.

Limit of tsunami inundation: the maximum point onshore that the tsunami reached.

Run-up elevation: the elevation above sea level where the tsunami wave terminated.

Sea level: the global average height of the ocean's surface to which all land elevatoins and submarine depths are referred.

Shoreline: the point on the beach corresponding to sea level.

Tsunami elevation: the difference between the wave height and sea level.

Tsunami flow depth: the difference between the wave height and the ground.

Image courtesy of Alaska Earthquake Center.