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Tectonic Hazards (Seismic Waves (An earthquakes energy is released as…
Tectonic Hazards
Seismic Waves
An earthquakes energy is released as seismic waves.These waves radiate out from the focus of the earthquake
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There are 3 types of seismic Waves:Primary waves,Secondary Waves and Love Waves.
P Waves-These are the fastest and first to reach the surface.They travel through both solids and liquids
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L Waves-These are slowest.They cause the most damage.They are larger and focus all their energy.They are larger and focus all of their energy on the Earth's surface
Measuring Earthquakes
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Moment Magnitude Scale- measures the total energy released by an earthquake at the moment it occurs using the
-Size of the seismic waves
-Amount of slippage or rock movement
-Resistance of the affected rocks
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Understanding Tsunamis
A tsunami is a s series of larger than normal waves.Tsunami's are usually formed when there is an underwater earthquakes and water is displaced.
Impacts of a Tsunami-(2004 Indian Ocean Tsunami)-Coastal settlements were destroyed,Infrastructure was destroyed,economies were devastated,there was an enormous environmental impact.
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