24.8.2. Intensity vs Distance Relationship

Try these first

1. 1.

   What happens to seismic intensity as you move away from the epicentre?

   Hint

   Remember the relationship between distance and intensity.

2. 2.

   Define what an epicentre is.

   Hint

   Consider where the earthquake starts.

3. 3.

   What does the intensity of seismic waves do as the distance from the epicentre increases?

   • Increases
   • Decreases
   • Remains the same

   Hint

   Consider the inverse relationship between distance and intensity.

4. 4.

   True or False: The soil type has no effect on earthquake intensity.

   • True
   • False

   Hint

   Think about how different soils can absorb or amplify seismic waves.

5. 5.

   Consider an earthquake with the epicentre located under a city. Describe how seismic intensity will differ in three different zones of the city located at varying distances from the epicentre.

   Hint

   Think about how materials and distances away from the source affect the shaking.

6. 6.

   Using a hypothetical earthquake's data, calculate how much intensity might decay at 2 km, 5 km, and 10 km from the epicentre based on average attenuation rates.

   Hint

   Use real attenuation models or research papers for reference.