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Presentation transcript:

Scripps Institution of Oceanography Cyber TEAM Academy 2008 Earth Science Dr. Debi Kilb Scripps Institution of Oceanography

What’s the difference between a “Seismograph” and a “Seismogram”? Seismograph: The instrument (Apparatus to measure and record vibrations) Seismogram: The actual wiggle (Record of an Earth tremor recorded by a seismograph)

Earthquake Magnitude

Earthquake Fault Rupture Area Magnitude -2 Magnitude 2 Magnitude ~8 (~300 miles)

Maximum Amplitude of Ground Shaking Determines Richter Magnitude

http://siovizcenter.ucsd.edu/library/TLTC/TLTCmag.htm