earthquake hazards

Cards (14)

  • Earthquake - is a feeble shaking to violent trembling of the ground produced by the sudden displacement of rocks or rock materials below the earth's surface.
  • Tectonic earthquake - generated by the sudden displacement along faults in the solid and rigid layer of the earth.
  • Volcanic Earthquake - earthquakes induced by rising lava or magma beneath active volcanoes.
  • Seismic waves - slippage on fault = release of elastic energy transported by seismic waves which travel throughout the earth. we feel them as vibrations.
  • P Waves
    • Body Wave
    • Fastest
    • Push-pull movement
    • Can move through solid and fluid
  • S waves
    • Body Wave
    • Slower than P wave
    • Up & down, side to side movement
    • can only move through solid
  • Surface Waves
    • Travel Outward
    • Slowest
  • Ground Shaking
    • Disruptive up-down and sideways movement or motion experienced during an earthquake.
  • Ground rupture - displacement on the ground due to movement of fault.
  • Liquefaction - Process that transforms the behavior of a body of sediments from a solid to a liquid when subjected to extremely intense shaking.
  • EARTHQUAKE-INDUCED LANDSLIDE - MOVEMENT OF ROCK, EARTH, OR DEBRIS DOWN A SLOPED SECTION OF LAND CAUSED BY EXTREME SHAKING OF THE GROUND
  • Love Wave = Perpendicular
    • Rayleigh Wave = Parallel and Perpendicular
  • TSUNAMI - A.K.A SEISMIC SEA WAVE, IS A SERIES OF WAVES IN A WATER BODY CAUSED BY THE DISPLACEMENT OF A LARGE VOLUME OF WATER