Question

What factor(s) determine(s) the magnitude of peak ground acceleration measured at a particular station due to an earthquake?

• A. Distance from the earthquake
• B. Rupture directivity
• C. Origin time of the earthquake
• D. Type of soil

Hint:

Peak ground acceleration is affected by the distance to the earthquake, the directivity of the rupture, and local soil conditions.

Answer 1

The Correct Option is A, B, D

Step 1: Understand the factors affecting peak ground acceleration. 
Peak ground acceleration (PGA) depends on several factors:
The distance from the earthquake epicenter (closer to the epicenter generally leads to higher PGA),
The rupture directivity (the direction of the rupture affects the intensity of shaking),
The type of soil (soft soils amplify seismic waves more than hard rocks). 
The origin time (C) does not significantly affect the PGA.
Step 2: Conclusion. 
Thus, the correct answer includes (A), (B), and (D).