What seismic waves determine travel time?

S waves
A traveltime curve is a graph of arrival times, commonly P or S waves, recorded at different points as a function of distance from the seismic source. Seismic velocities within the earth can be computed from the slopes of the resulting curves.

What is a seismic travel time curve?

A traveltime curve is a graph of arrival times, commonly P or S waves, recorded at different points as a function of distance from the seismic source. Seismic velocities within the earth can be computed from the slopes of the resulting curves.

How do you calculate 2 way travel time?

So, two-way traveltime is that of a normal-incidence wave with zero offset. So, in the Saleh’s answer you need to divided the TWT by 2. So, TWT/2 (s) * Velocity (m/s) = Depth (m). But, another aspect that you need to check, is that in seismic sections usually we work with milliseconds (ms) instead seconds (s).

What is travel time in geophysics?

1. n. [Geophysics] The elapsed time for a seismic wave to travel from its source to a given reflector and return to a receiver at the Earth’s surface. Minimum two-way traveltime is that of a normal-incidence wave with zero offset.

How far can ap wave travel in 8 minutes?

According to the Earth Science Reference Tables, approximately how far will a P-wave travel in 8 minutes? 4.8 x 10^3 km. Travel faster through more dense solid materials.

How long does it take an S wave to travel 4000 km?

The graph shows that the S-waves need about 12 minutes: 40 seconds to travel the same distance. Therefore, if the time separation between the arrival time of the P- and S-waves is 5 minutes:40 seconds, the epicenter must be 4000 km away.

How are seismic travel time curves used to study earthquakes?

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.

Which seismic waves travel most rapidly?

P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.

What is two way time in geology?

two-way travel time The time taken for a seismic wave to travel from the shot down to a reflector or refractor and back to a geophone at the surface. For finite offsets, the two-way travel times are affected by normal moveout; the normal-incidence two-way travel time is measured at zero offset.

How far will a S wave travel in 10 minutes and 40 seconds?

How far will a S-wave travel in 10 minutes and 40 seconds? 3, 200 km.