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Travel time in seismology means time for the seismic waves to travel from the focus of an earthquake through the crust to a certain seismograph station. Travel-time curve is a graph showing the relationship between the distance from the epicenter to the observation point and the travel time.
A travel time curve is a graph of the time that it takes for seismic waves to travel from the epicenter of an earthquake to seismograph stations at varying distances away. The velocity of seismic waves through different materials yield information about Earth's deep interior.
31 mar 2021 · TESC discusses how to use this time travel graph, calculate S-P arrival times and epicenter distance from a seismogram. Used to triangulate the earthquake's ...
Travel times of visible arrivals are related to the distance between source and receiver (\(x\)), thickness of the layer (\(h\)) and the wave velocities in the upper layer and basement (\(v_1\) and \(v_2\)).
In this activity you will construct a Travel-Time Graph for seismic waves similar to the one shown below. This graph will be used to determine the distance to an epicenter based on the amount of time that earthquake waves have traveled.
The Earthquake Triangulation app provides a simple interactive map where students or instructors can estimate the location of an earthquake using the distances between the earthquake and 3 or more seismic stations.
P and S-P travel times as a function of source distance for an earthquake 33 km deep. The Time of the first arriving P phase is given, along with the time difference between the S and P phases. The latter time is known as the S minus P time.
