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Impact of Sediments on Ground Motion during a Magnitude 7.7 Earthquake

This publication explores how sediment characteristics influence ground shaking during a magnitude 7.7 earthquake. Analysis reveals that sediments can amplify shaking by up to 200%, while in some cases, they may reduce shaking levels by approximately 30%, creating a more uniform shaking profile. Additionally, the study includes probabilistic ground motion maps that assess the likelihood of exceedance over a specified time period. Understanding these dynamics is crucial for earthquake preparedness and infrastructure resilience.

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Impact of Sediments on Ground Motion during a Magnitude 7.7 Earthquake

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  1. Web Pages

  2. Reviewed Publications

  3. Magnitude 7.7 Earthquake

  4. Average = 0.4 g Sediments amplify shaking ~200%.

  5. Average = 0.4 g Sediments amplify shaking ~200%. Average = 0.5 g Sediments deamplify slightly.

  6. Average = 0.4 g Sediments amplify shaking ~200%. Average = 0.5 g Sediments deamplify slightly. Average = 0.4 g Sediments only amplify very slightly.

  7. Probabilistic Ground Motion Posters • Probabilistic ground motion maps (2% and 10% chance of exceedance in 50 y; PGA, 0.2 sec, 1.0 sec) • Probabilistic ground motion maps (2% and 10% chance of exceedance in 50 y; PGA, 0.2 sec, 1.0 sec)

  8. What do the sediments do?

  9. What do the sediments do? Reduce shaking levels ~30% & make them more uniform. Reduce shaking levels slightly& make them more uniform.

  10. What do the sediments do? Reduce shaking levels ~30% & make them more uniform. Increase shaking levels ~100%. Reduce shaking levels slightly& make them more uniform.

  11. Liquefaction Maps From G. Rix & S. Romero, Georgia Tech

  12. Fact Sheet

  13. Workshops

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