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Notes 10-20-09 - Problem – can’t always see the fault...

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GEOL 240Lxg Notes 10-20-09 Detecting and Recording seismic waves o Arrival time of seismic waves location o Amplitude of seismic waves magnitude Resonant Frequency o Frequency of waves be f0 so mass won’t move Vertical Seismograph o Picture Garden Gate Seismometer o Picture Locating Earthquakes o From shaking maps (worst damage) Problem – worst damage is not always at epicenter o Find fault that moved
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Unformatted text preview: Problem – can’t always see the fault that moved o Arrival times of seismic waves at several seismic observatories • Use a Travel-Time Curve o 4.2 • Location = latitude, longitude, depth, origin time o ts-tp method to locate earthquakes distance to the earthquake from your station • 4.3 • Errors o Really deep below the surface o May have to go up mountains o 4.4...
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