web.ics.purdue.edu/~braile

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web.ics.purdue.edu/braile
Online Searches
http//web.ics.purdue.edu/braile/new/EpicenterPlo
tting.ppt
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Plotting Earthquake Epicenters
Create a plot of worldwide earthquake epicenters
to display the narrow zones of seismic activity
of the Earth and aid in an understanding of
plate tectonics. Students discover that about
95 of earthquakes occur along plate
bound- aries where the lithospheric plates
(about 100 km thick shell of relatively cool,
rigid and brittle rock overlying the softer,
hotter asthenosphere zone with- in the Earths
upper mantle) move with respect to each other in
three ways ? diverging or moving apart (such as
at the mid-ocean ridges), converging or colliding
(such as along the west coast of South America,
the Aleutian Islands, or the western Pacific) and
transform or horizontal slipping (such as along
the San Andreas fault in California).
http//web.ics.purdue.edu/braile/edumod/epiplot/
epiplot.htm
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(No Transcript)
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Information on catalog searches to obtain and
earthquake list http//web.ics.purdue.edu/braile
/edumod/eqdata/eqdata.htm
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Base map (full version is 11x17 inches) for
plotting epicenter from an earthquake list.
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It is useful to initially perform the epicenter
plotting activity "by hand." The experience
allows the student to fully understand the
characteristics of the data, learn how to obtain
real and timely earthquake data from the
Internet, and practice map skills, including
longitude and latitude, directions,
two-dimensional interpolation, and basic world
geography. Extensions to this activity are
described that include producing maps with
computer software or from the Internet.
Close-up of example epicenter map, self-adhesive,
color dots used to plot epicenters
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Section of wall map with colored dots indication
earthquake epicenters
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IRIS Event Search for CA/NV Earthquakes
http//www.iris.edu/quakes/eventsrch.htm
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IRIS Event Search for CA/NV Earthquakes
Results
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IRIS Event Search for CA/NV Earthquakes - Map
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Legend for Plotting CA/NV Epicenters
Magnitude lt3 3-3.9 4
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Seismic/Eruption
Seismic/Eruption includes up-to-date earthquake
and volcanic eruption catalogs and allows the
user to display earthquake and volcanic eruption
activity in speeded up real time on
global, regional or local maps that also show
the topography of
the area in a shaded
relief
map image.

Seismic/Eruption is an
interactive
program that
includes a number of tools

that allow the user to
analyze
earthquake and
volcanic eruption data and

produce effective displays
to
illustrate seismicity and
volcano
patterns.
http//bingweb.binghamton.edu/ajones/