Earthquake ground motions and site effects

HideShow resource information
  • Created by: Max123
  • Created on: 25-03-13 20:38

Earthquake ground motions and site effects

Earthquakes are essentially shock waves radiating out from a fault rupture like ripples on a pond. There are two types of body wave:

·         Primary (P) waves: travel fastest through the crust and so are the first to be sensed after an earthquake has occurred.

·         Secondary (S) waves: these cause most of the structural damage due to a mixture of horizontal and vertical ground motions. They travel more slowly. (Bryant,2005; Keller and Blodgett,2008.)

Soft, unconsolidated sediments slow down the passage of earthquake shock waves, and in so doing can amplify and prolong the severity


No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Natural hazards resources »