1
Published in 2015
ShakeAlert is an experimental earthquake early warning system (EEW) for the West Coast of the United States and the Pacific Northwest. ShakeAlert is a product of the US Geological Survey and its partners including the California Institute of Technology, University of California, Berkeley, University...
Grade Level   9 10 11 12
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2
In this animation, we are shoeing an ocean/continent convergent boundary at the leading edge of the plate. We see the denser oceanic plate diving beneath the continental plate. The down-going oceanic plate eventually warms up to the temperature of the surrounding mantle. Such destruction (recycling)...
Grade Level   9 10 11 12
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3
Oblique view of a highly generalized animation of a subduction zone where an oceanic plate is subducting beneath a continental plate. This scenario can happen repeatedly on a 100-500 year cycle. The process which produces a mega-thrust earthquake would generate a tsunami (not depicted here).
Grade Level   9 10 11 12
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4
"This simplified animation illustrates both the subduction-zone processes that lead to a """"""""ghost forest"""""""" as well as the evidence that scientists collected to determine that the Pacific Northwest has had many great earthquakes and tsunamis in the past, and will again inthe future. This...
Grade Level   9 10 11 12
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5
This animation shows that GPS can record the movement of the leading edge of the overlying continental plate in a subduction zone. The plates are locked and the overlying plate is forced back. When friction is overcome and strain is released, the GPS receiver will snap back toward its original...
Grade Level   9 10 11 12
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6
This animation shows that GPS can record the movement of the leading edge of the overlying continental plate in a subduction zone. The plates are locked and the overlying plate is forced back. When friction is overcome and strain is released, the GPS receiver will snap back toward its original...
Grade Level   9 10 11 12
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7
A visualization of earthquake waves traveling both through Earth's interior and radiating outward on the surface.
Grade Level   9 10 11 12
Maps and Visualizations Teaching Media
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8
Published in 2015
The seismic shadows are the effect of seismic waves striking the core-mantle boundary. P and S waves radiate spherically away from an earthquake's focus in all directions and return to the surface by many paths. S waves, however, don't reappear beyond an angular distance of ~103° (as they are...
Grade Level   9 10 11 12
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