Download Epicenter FELT ppt

Cyber TEAM Academy 2008
Earth Science
Dr. Debi Kilb
Scripps Institution of Oceanography
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
What’s the difference between
a “Seismograph” and a “Seismogram”?
Seismograph: The instrument
(Apparatus to measure and record vibrations)
Seismogram: The actual wiggle
(Record of an Earth tremor recorded by a seismograph)
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
Seismic Waves
fault ‘snaps’
energy ripples
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
3 Main Earthquake Waves
• P waves (compressional) 6-8 km/s. Particle motion is parallel
to direction of propagation; also called primary waves.
• S waves (shear) 3-5 km/s. Particle motion is perpendicular to
direction of propagation; also called secondary waves. Do not
pass through liquids.
• Surface waves (surface) < 3-4 km/s. Waves that travel around
the Earth at the surface.
Seismograph
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
Types of Seismic Waves
Seismograph
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
Ground
Motions
P
Waves
S
Waves
Surface
Waves
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
epicenter of an earthquake
Para ver esta película, debe
disponer de QuickTime™ y de
un descompresor TIFF (sin comprimir).
http://projects.cs.csusm.edu/maps/quakesDemoMode.html