EPS 20 Earthquake preparedness 0909

EPS 20 Earthquake preparedness 0909 - Earthquake...

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Earthquake preparedness 22:14 4.0 Earthquake in Berkeley – Sept 5 Friday 9pm, Calaveras fault  27000 factors below magnitude 7.0 scenario earthquake  low freq sway : magnitude is higher vs. one big thump  quake.wr.usgs.gov/recenteqs/latestfault.htm o size of box – shows magnitude  o pink lines – fault lines (major ones: San Andreas, Hayward) o most earthquakes in CA 5-12 km depths. Friday’s - 16.2 k o Shake Map  star: epicenter.  Colour scale: amplitude / intensity of ground shaking  Radial fn away from the epicenter  Ground shaking is fn of distance from slip  Triangles – seismic stations o Did you feel it – community intensity map Intensity 5 – possible light damage Magnitude >5.5 - damage  Magnitude >2.5 – can be felt Why prepare?  Likelihood of earthquake in next 10-20 years is quite high Hayward fault runs thru campus 
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EPS 20 Earthquake preparedness 0909 - Earthquake...

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