20.19.2. Recurrence Interval

Try these first

1. 1.

   What is the recurrence interval?

   Hint

   Think about how we measure time in such contexts.

2. 2.

   Describe how paleoseismic data is used to estimate recurrence intervals.

   Hint

   Consider how scientists infer information from physical evidence.

3. 3.

   What does the recurrence interval indicate?

   • The time since the last earthquake
   • The average time between significant earthquakes
   • The strength of an earthquake

   Hint

   Focus on what the term 'interval' refers to in a time context.

4. 4.

   True or False: The recurrence interval is calculated only using recorded historical earthquakes.

   • True
   • False

   Hint

   Consider all data sources mentioned.

5. 5.

   Suppose a fault has experienced three significant earthquakes at 50-year intervals. What is the estimated recurrence interval, and how could this data influence urban development?

   Hint

   Think about the straightforward averaging of intervals.