A major earthquake struck off the Pacific coast of Guatemala Wednesday morning, rocking the capital and shaking buildings as far away as Mexico City and El Salvador.
13 slide Powerpoint presentation (zipped ppt/animation 18.4 MB / pdf 2.37 MB)
Presentación en Español (zipped ppt/animación 18.1 MB / pdf 2.49 MB)
Wave Propagation and Tectonic Setting (mpeg-4 8.49 MB / YouTube)
USArray Ground Motion Visualization (mpeg-4 7.22 MB / More Info)
Back Projection (mpeg-4 62.6 kB / More Info)
Focal Mechanisms Explained (mpeg-4 41.0 MB / YouTube)
