GEOL 106 Lecture 6: Geol week 6
23 Mar 2018
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Document Summary
Earthquake destruction: what is a tsunami, most are generated by displacement from a megathrust fault. Local tsunami: travels towards land very quickly, people have very little time to react. Is the furthest horizontal and vertical distance a tsunami travels inland. Effects of tsunamis: primary effects, flooding and erosion. Shorten and coastline: debris erodes both landscape and human structures. From ruptured gas lines: contaminated water supplied. Floodwaters, wastewater treatment plants, rotting animal carcasses and plants, nuclear radiation: disease. Human interaction: humans cannot prevent or control tsunamis, human activity does not affect frequency or magnitude. Land use: native vegetation may provide defense, development of land must be monitored. Set up warning systems and emergency response plans: set up warning systems, provide emergency equipment, personnel, and plans, educate the public, detection and warning, tsunami warning system. Seismographs to detect earthquakes: automated tidal gauges to determine sea level changes, buoy sensors with tsunameter to detect small changes in pressure in ocean.
