Researchers have mathematically elucidated how the presence of crystals and gas bubbles in magma affects the propagation of seismic P-waves. A novel equation was derived to describe the travel of ...

Click here to enlarge image Rock density affects seismic-wave velocity; therefore, both the S and P-waves have higher velocities in denser rock. Denser rock indicates higher rock compaction ...

Earlier first arrivals, for example in the Seattle fault zone, indicate that the rocks beneath the source and/or receiver have a higher P wave velocity, allowing the signal to travel more quickly.

Researchers have found new evidence for a massive subsurface ocean on Mars, highlighting the possibility of microbial life ...

Pulse wave velocity measurements that were taken in 2007 were independently and directly linked to the systolic and diastolic BP measurements from 2011 in both groups (P for both < .001).