Linked from

The 20 pages that link to P waves, each with the reason it gives.

• Seismic waveBroader topic: Its early arrival and ability to cross liquid layers distinguish it from other seismic waves.

• SeismologyBroader topic: First arrival at a seismometer; its travel time fixes the earthquake's distance.

• Seismic tomographyBroader topic: Its travel times provide a major source of constraints on interior speeds.

• Seismic reflectionBroader topic: P-waves commonly provide the principal arrivals in reflection surveys.

• Earthquake early warning systemRelated: Its early arrival can reveal an earthquake before slower, more damaging waves arrive.

• S-waveCompared with: Its faster arrival and compressional motion distinguish it from S-waves.

• Seismic anisotropyBroader topic: Its direction-dependent speed can provide evidence for anisotropic elastic structure.

• Mohorovičić discontinuityBroader topic: Its velocity typically rises across the crust–mantle boundary.

• Seismic refractionBroader topic: Its speed commonly increases with depth, making it the principal refraction-wave type.

• Core–mantle boundaryRelated: P-wave speed changes sharply as waves cross into the liquid outer core.

• Beno GutenbergRelated: P-wave paths and travel times change sharply when they enter the outer core.

• Inge LehmannRelated: Lehmann interpreted unexpected P-wave arrivals as evidence for a boundary within the core.

• Longitudinal waveBroader topic: P-waves are longitudinal waves that travel through Earth’s interior.

• Seismic velocityBroader topic: Its speed is governed by bulk and shear moduli together with density.

• SeismogramBroader topic: It is commonly the first earthquake wave visible on a seismogram.

• Surface waveCompared with: Its compressional motion and ability to cross liquids distinguish it from surface waves.

• Earth's inner coreRelated: Their passage through the inner core provides direct evidence that it is solid.

• Love waveCompared with: P waves travel through Earth’s interior rather than as horizontally polarized surface motion.

• Focal mechanismRelated: Its first-motion polarity is a principal observation used to infer the mechanism.

• Birch's lawBroader topic: Birch's law is commonly applied to the velocity of compressional waves in minerals.