An Introduction to Surface Wave Analysis Michael E. Pasyanos - IRIS
An Introduction to Surface Wave Analysis Michael E. Pasyanos - IRIS
An Introduction to Surface Wave Analysis Michael E. Pasyanos - IRIS
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Group Velocity vs. Phase Velocity<br />
For typical earth profiles, the phase<br />
velocity is generally faster than the<br />
group velocity.<br />
While the group velocity can increase or<br />
decrease with increasing period, phase<br />
velocities are mono<strong>to</strong>nically increasing.<br />
If the group velocities are constant over a<br />
wide period range, then they can<br />
produce a high-amplitude body-wave<br />
looking pulse that is called an Airy<br />
phase