Post on 15-Mar-2016
description
Magnitude 6.5KERMADEC ISLANDS
Magnitude 5.9KODIAK ISLAND, ALASKA
Two main groups of seismic waves.
Body waves travel through the Earth’s interior.
Surface waves are guided by the outer layers of the Earth.
Two types of body waves.
P-waves = Primary Waves = first arrival
S-waves = Secondary Waves = second arrival
Two types of surface waves.
Rayleigh waves: Discovered by Lord Rayleigh (1887).
Love waves: Discovered by A.E.H. Love (1911).
Magnitude 6.5KERMADEC ISLANDS
123º
Magnitude 5.9KODIAK ISLAND, ALASKA
52º
Magnitude 6.5KERMADEC ISLANDS
2009 May 16 00:53:46 UTC
Magnitude 5.9KODIAK ISLAND, ALASKA
2009 May 16 18:22:39 UTC
500 Hz
570 Hz
500 Hz
550 Hz
500 Hz
530 Hz
500 Hz
510 Hz
1 minute
Magnitude 6.3 - Fiji 2005 December 13 03:16:09 UTC
Magnitude 6.3 - Fiji 2005 December 13 03:16:09 UTC
Plate Tectonics
Earthquakes
Plate TectonicsEarthquakes correlated with:
* Mid-Ocean Ridges
* Fracture Zones
* Ocean Trenches
1980-2001 (NEIC, M5)
Mechanism of Plate Tectonics
www.bibliotecapleyades.net
Directions and Rates of Plate Motion
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
U.S. Geological Survey AVO
http://whyfiles.org/031volcano/2.html