EESA06H3 Chapter 3: EESA06 Chapter 3.pdf
Document Summary
Earthquake trembling or shaking of the ground caused by the sudden release of energy stored in the rocks beneath the earth"s surface. Seismic waves waves of energy released and sent through the earth when a rock breaks. Indonesia + sumatra earthquake (2004: magnitude 9. 3, release of energy between the india plate and burma plate, thrust fault. Inundation the distance from the shoreline to the limit of tsunami penetration: run-up elevation the elevation above sea level of the water surface at the inland limit of inundation, tsunami lost energy as it moved inwards. Focus (hypocentre) point within the earth where seismic waves first originate; centre of the earthquake, point of initial breakage and movement on a fault: epicentre point on the earth"s surface directly above the focus. Determining the location of an earthquake (page 75: deep focus 350-670km deep, shallow focus = most common (85%)
