Practice Attenuation Relationships (ground Motion Prediction Equations) (28.10)

Practice: Attenuation Relationships (Ground Motion Prediction Equations)

Lesson 28.10Magnitude and Intensity of Earthquakes

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8 questions

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6 sample questions

Question 1.
What is attenuation?
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Think about how distance affects shaking intensity.
Question 2.
What does PGA stand for?
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Focus on the 'P' for peak.
3Question 3.
What does attenuation refer to in the context of earthquakes?
- Increase in ground motion
- Decrease in ground motion
- No effect on ground motion
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Think about what happens to vibrations as you move away.
4Question 4.
True or False: The Peak Ground Acceleration (PGA) can be directly measured at the source of an earthquake.
- True
- False
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Where does the measurement need to occur?
Question 5.
Given a magnitude 7.0 earthquake occurring at a depth of 10 km, use an attenuation model to estimate the PGA at a location 20 km away. Discuss your approach and calculations.
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Identify the constants for your specific model.
Question 6.
Analyze how geological variances might lead to the cropping of peaks in different seismic regions when predicting PGA. Provide examples.
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Consider how waves might change in shape and intensity.

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