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Jazan Earthquake Ground Motion Attenuation

Jazan Earthquake Ground Motion Attenuation. By: Mahmoud Sami. The release of the accumulated elastic strain energy by the sudden rupture of the fault is the cause of the earthquake shaking. Measures of ground-motion for engineering purposes. PGA (peak ground acceleration)

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Jazan Earthquake Ground Motion Attenuation

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  1. Jazan Earthquake Ground Motion Attenuation By: Mahmoud Sami

  2. The release of the accumulated elastic strain energy by the sudden rupture of the fault is the cause of the earthquake shaking

  3. Measures of ground-motion for engineering purposes • PGA (peak ground acceleration) • PGV (peak ground velocity) • Response spectral acceleration (elastic, inelastic) at periods of engineering interest • Intensity (Can be related to PGA and PGV.)

  4. Jazan Earthquake Ground Motion Measurements

  5. Peak ground acceleration (PGA) • easy to measure because the response of most instruments is proportional to ground acceleration • convenient single number to enable rough evaluation of importance of records

  6. What Controls the Level of Shaking? • Magnitude • Distance from fault • Shaking decays with distance • Local site response (rock or soil) • amplify the shaking

  7. Ground Motion Deconvolution (Steidl)

  8. Jazan Earthquake PGA Measurements

  9. Thank You Questions ?

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