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Aftershock Sequences
In this activity, learners will look at some of the characteristic properties of aftershock sequences, and relate them to variables in two equations: the modified version of Omori's Law, and the Gutenberg-Richter relation for aftershock sequences. The database provided in this link can be searched to extract the magnitude and time-after-mainshock for selected earthquakes. From this information, users can discover the real-world meanings of various properties of aftershock sequences.
Intended for grade levels:
  • High (9-12)
  • College (13-14)
Type of resource:
  • For the classroom:
    • Classroom activity
  • Geological Sciences:
    • Geophysics
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright, Southern California Earthquake Center.
DLESE Catalog ID: EARTHQUAKE-000-000-010-002
Resource contact / Creator / Publisher:
Contact: John Marquis
Southern California Earthquake Center