P-waves
E672911
P-waves are primary seismic body waves that compress and expand the material they travel through and are the fastest type of earthquake-generated wave, moving through both solids and fluids.
All labels observed (1)
| Label | Occurrences |
|---|---|
| P-waves canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7570526 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: P-waves Context triple: [Rayleigh waves, comparedTo, P-waves]
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A.
PZ
PZ is the vehicle registration code used on license plates for vehicles registered in the Preveza regional unit of Greece.
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B.
PZ
PZ is the IATA airline designator assigned to LATAM Airlines Paraguay, the Paraguayan branch of the LATAM Airlines Group.
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C.
TPWS
TPWS (Train Protection & Warning System) is a UK railway safety system that automatically applies a train’s brakes to prevent collisions and overspeeding, particularly at signals and speed restrictions.
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D.
P.
P. is a common abbreviated form of the Roman praenomen "Publius," frequently used in historical and classical texts.
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E.
WW-P
WW-P is the commonly used abbreviation for the West Windsor-Plainsboro Regional School District in New Jersey.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: P-waves Target entity description: P-waves are primary seismic body waves that compress and expand the material they travel through and are the fastest type of earthquake-generated wave, moving through both solids and fluids.
-
A.
PZ
PZ is the vehicle registration code used on license plates for vehicles registered in the Preveza regional unit of Greece.
-
B.
PZ
PZ is the IATA airline designator assigned to LATAM Airlines Paraguay, the Paraguayan branch of the LATAM Airlines Group.
-
C.
TPWS
TPWS (Train Protection & Warning System) is a UK railway safety system that automatically applies a train’s brakes to prevent collisions and overspeeding, particularly at signals and speed restrictions.
-
D.
P.
P. is a common abbreviated form of the Roman praenomen "Publius," frequently used in historical and classical texts.
-
E.
WW-P
WW-P is the commonly used abbreviation for the West Windsor-Plainsboro Regional School District in New Jersey.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
body wave
ⓘ
primary wave ⓘ seismic wave ⓘ |
| alsoKnownAs |
compressional waves
ⓘ
longitudinal seismic waves ⓘ primary waves ⓘ |
| amplitude | generally smaller than S-wave amplitude at same distance ⓘ |
| arrivalOrder | first to arrive at a seismic station ⓘ |
| attenuation | generally lower attenuation than S-waves ⓘ |
| cannotTravelThrough | vacuum ⓘ |
| category |
earthquake-generated wave
ⓘ
elastic wave ⓘ |
| causes | alternating compression and dilation of rocks ⓘ |
| comparedToS-waves | faster than S-waves ⓘ |
| comparedToSurfaceWaves | arrive earlier than surface waves ⓘ |
| directionality | radial from the source in a homogeneous medium ⓘ |
| discoveryCentury | 19th century ⓘ |
| energyType | mechanical energy ⓘ |
| generatedBy |
earthquakes
ⓘ
explosions ⓘ sudden stress changes in the Earth ⓘ |
| governedBy | elastic wave equations ⓘ |
| hazardRelevance | often used for early warning before strong shaking ⓘ |
| motionType | compression and rarefaction of material ⓘ |
| particleMotionDirection | parallel to direction of wave propagation ⓘ |
| phaseNameInSeismology | P ⓘ |
| polarization | linear ⓘ |
| propagationMedium |
gases
ⓘ
liquids ⓘ solids ⓘ |
| recordedBy | seismometers ⓘ |
| recordedOn | seismograms ⓘ |
| reflection | can reflect at boundaries between different materials ⓘ |
| refraction | can refract when entering media with different velocities ⓘ |
| relativeSpeed | fastest seismic wave type ⓘ |
| speedDependsOn |
density of the medium
ⓘ
elastic properties of the medium ⓘ |
| travelsThrough |
Earth’s crust
ⓘ
Earth’s inner core ⓘ Earth’s mantle ⓘ
linked to:
Earth's mantle
Earth’s outer core ⓘ |
| typicalVelocityInCrust | about 5 to 7 km/s ⓘ |
| typicalVelocityInMantle | about 8 to 14 km/s ⓘ |
| usedFor |
estimating earthquake magnitude
ⓘ
locating earthquake hypocenters ⓘ probing Earth’s internal structure ⓘ |
| waveType | longitudinal wave ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: P-waves Description of subject: P-waves are primary seismic body waves that compress and expand the material they travel through and are the fastest type of earthquake-generated wave, moving through both solids and fluids.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.