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Seismology Earthquakes And Earth Seismology Earthquakes And Earth Structure
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Category : Science » Earth Science
Whole-Earth scale seismic waves and. Earth structure. Earthquake . A common method to determine the structure of the earth's interior is to analyze the .
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Content Summary :
Seismic Velocity and Travel Times • A common method to determine the structure of the earth’s interior is to analyze thevariations in the travel times of seismic waves: – Earthquake occurs and generates seismic waves– Earthquake is identified and located– Travel times of seismic waves are compared to a reference model– Anomalous travel times are converted to heterogeneities inside the earth (inverse modeling) • Travel time of a seismic wave is the time taken to travel from the hypocenter of theearthquake to the seismometer • Seismologists use the travel time curve to identify seismic phases (P, S, etc.) bydetermining when they will arrive on a seismogram given how far away theearthquake epicenter is from the station. It can also be used in reverse.
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