Geological Hazards and Their Impact_McGeary_Date_031210

Geological Hazards and Their Impact_McGeary_Date_031210 - o...

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Tsunamis Causes of Tsunamis: 75%- earthquakes 10%- unknown 2% meteorological 5% volcanic 8% landslide Why so dangerous? 1) not every earthquake produces a tsunami 2) Hard to model actual height 3) May be too close to epicenter of earthquake for warning 4) First wave is not always the biggest 5) lack of education 6) Human curiosity - Depending on the steepness of the coast, determines how far inland you have to go to be safe however, most houses are built on harbors, bays, etc. where the coast is relatively fast, thus the earthquake causes more damage Warning System: Earthquake detectors Water height detectors
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Unformatted text preview: o Tidal gauges o Buoys o Deep water sensors Communication Education - Local systems (Japan): if youre 10 min- 1 hour away, they can get a warning to you - Regional systems: about an hour - Ocean system 1960 Chile earthquake biggest ever recorded subduction zone - major tsunami killed people in: Chile Hawaii Japan (largest wave to hit Japan in 500 years) Pacific Northwest Megaquake and Tsunami (between spring of 1699 and fall of 1700) Found from Japans tsunami records that it occurred in January of 1700...
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Geological Hazards and Their Impact_McGeary_Date_031210 - o...

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