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Active Message Threads for September 2012
IRIS EPO
NEW ANIMATIONS AVAILABLE!
*What Bumped the Richter Scale?*
<http://www.iris.edu/hq/programs/education_and_outreach/animations/26>
A new animation, Exploring Moment Magnitude, describes the Richter Scale
and how new calculations help to quantify larger earthquakes. Scientists
have developed far-more sensitive seismometers that, with faster
computers, have enabled them to record & interpret a broader spectrum of
seismic signals than was possible in the 1930's, when the Richter
magnitu…
[more]
