The Earth Responds
[click image to view at full size]
After large earthquakes seismic waves travel throughout
the Earth. These waves travel form an earthquake's source to seismic
stations spanning the globe, some travel a direct path and other
waves reflect and refract at boundaries within and at the surface
of our planet. This image was made from thousands of seismic records
and shows the arrival of discrete seismic pulses at different distances
and times. The image is reflected about the distance of 180
degrees to show waves which travel more than half way around the
planet.
Contributed by Paul Earle, U.S. Geological Survey |
