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The UC San Diego Webshaker is a live earthquake experiment conducted over the internet. The user can select a historic earthquake or design an earthquake by specifying the frequency, amplitude, and duration. The shake table delivers base motion to the test structure in the same way that an earthquake shakes buildings and other structures. A live video broadcast and precise measurements from sensors located on the test structure are sent to you over the internet. Once the test is complete, the data is sent to your computer and presented in several x-y graphs, displaying the response from different parts of the structure. The web site has supporting readings and homework problems designed to accompany webshaker experiments. There are also sound clips and radio broadcasts from several earthquakes.
Intended for grade levels:
  • High (9-12)
  • College (13-14)
Type of resource:
  • For the classroom:
    • Computer activity
    • Problem set
  • Visual:
    • Webcast
  • Audio:
    • Sound
  • Dataset:
    • In-situ
  • Geological Sciences:
    • Structural geology
  • Natural hazards
  • Physics
Technical requirements:
Either Windows Media, Real Player or Quicktime is required to show the video. The experiments can also be run without the video.
Cost / Copyright:
No cost
Copyright 1999, 2000, 2001 UCSD. All rights reserved.
DLESE Catalog ID: SERC-NAGT-000-000-000-325
Resource contact / Creator / Publisher:
Contact: Ahmed Elgamal
University of California at San Diego