Holmboe instability
E650394
Holmboe instability is a type of shear-driven wave instability that occurs in stably stratified fluids, producing characteristic interfacial waves and mixing at density interfaces.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Holmboe instability canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7199364 — 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: Holmboe instability Context triple: [Stratified Flows, includesConcept, Holmboe instability]
-
A.
Kelvin–Helmholtz instability
Kelvin–Helmholtz instability is a fluid dynamical phenomenon in which velocity shear between layers of fluid (or plasma) with different densities leads to characteristic wave-like billows and turbulent mixing at their interface.
-
B.
Rayleigh–Taylor instability
Rayleigh–Taylor instability is a fluid dynamics phenomenon in which the interface between two fluids of different densities becomes unstable when the lighter fluid pushes against the heavier one, leading to complex mixing patterns.
-
C.
Jeans instability
Jeans instability is a gravitational phenomenon in astrophysics where regions within a gas cloud become unstable and collapse under their own gravity, leading to the formation of structures like stars and galaxies.
-
D.
Saffman–Taylor instability
The Saffman–Taylor instability is a fluid dynamics phenomenon in which a less viscous fluid penetrating a more viscous one in a confined geometry leads to finger-like interfacial patterns, often called viscous fingering.
-
E.
Kruskal–Shafranov instability criterion
The Kruskal–Shafranov instability criterion is a fundamental condition in plasma physics that predicts when a magnetically confined plasma column becomes unstable to kink-like distortions.
- 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: Holmboe instability Target entity description: Holmboe instability is a type of shear-driven wave instability that occurs in stably stratified fluids, producing characteristic interfacial waves and mixing at density interfaces.
-
A.
Kelvin–Helmholtz instability
Kelvin–Helmholtz instability is a fluid dynamical phenomenon in which velocity shear between layers of fluid (or plasma) with different densities leads to characteristic wave-like billows and turbulent mixing at their interface.
-
B.
Rayleigh–Taylor instability
Rayleigh–Taylor instability is a fluid dynamics phenomenon in which the interface between two fluids of different densities becomes unstable when the lighter fluid pushes against the heavier one, leading to complex mixing patterns.
-
C.
Jeans instability
Jeans instability is a gravitational phenomenon in astrophysics where regions within a gas cloud become unstable and collapse under their own gravity, leading to the formation of structures like stars and galaxies.
-
D.
Saffman–Taylor instability
The Saffman–Taylor instability is a fluid dynamics phenomenon in which a less viscous fluid penetrating a more viscous one in a confined geometry leads to finger-like interfacial patterns, often called viscous fingering.
-
E.
Kruskal–Shafranov instability criterion
The Kruskal–Shafranov instability criterion is a fundamental condition in plasma physics that predicts when a magnetically confined plasma column becomes unstable to kink-like distortions.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
fluid instability
ⓘ
hydrodynamic instability ⓘ interfacial wave instability ⓘ shear instability ⓘ |
| analyzedUsing |
linear stability theory
ⓘ
nonlinear numerical simulations ⓘ |
| appearsAs | cusped or horn-shaped interfacial waves in experiments and simulations ⓘ |
| associatedWith |
asymmetric wave patterns above and below the interface
ⓘ
phase-locked interaction between vorticity and density interface ⓘ |
| belongsTo | stratified shear flow phenomena ⓘ |
| characterizedBy |
counter-propagating interfacial waves
ⓘ
relatively weak overturning compared to Kelvin–Helmholtz instability ⓘ sharp density interface ⓘ |
| contrastedWith | Kelvin–Helmholtz instability NERFINISHED ⓘ |
| dependsOn | vertical profiles of velocity and density ⓘ |
| drivenBy |
shear across a density interface
ⓘ
velocity shear ⓘ |
| firstDescribedIn | 1960s ⓘ |
| hasEffect |
enhanced mixing across density interfaces
ⓘ
generation of small-scale turbulence near the interface ⓘ |
| hasGrowthMechanism | interaction between shear and stratification ⓘ |
| hasMode | interfacial wave mode ⓘ |
| hasName | Holmboe instability NERFINISHED ⓘ |
| hasWaveType | interfacial gravity waves modified by shear ⓘ |
| moreLikelyThan | Kelvin–Helmholtz instability in strongly stratified sharp-interface flows ⓘ |
| namedAfter | Jørgen Holmboe NERFINISHED ⓘ |
| observedIn |
field observations of stratified natural waters
ⓘ
laboratory stratified shear flow experiments ⓘ |
| occursAt | density interfaces ⓘ |
| occursIn |
density-stratified shear flows
ⓘ
stably stratified fluids ⓘ |
| occursWhen | Richardson number is order one or larger with sharp density interface NERFINISHED ⓘ |
| produces |
interfacial waves
ⓘ
mixing at density interfaces ⓘ |
| relevantTo |
internal wave dynamics
ⓘ
mixing in lakes ⓘ mixing in oceans ⓘ mixing in the atmosphere ⓘ transport of heat and tracers in stratified flows ⓘ |
| requires |
stable density stratification
ⓘ
sufficient velocity shear ⓘ |
| studiedIn |
atmospheric sciences
ⓘ
geophysical fluid dynamics ⓘ oceanography ⓘ |
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: Holmboe instability Description of subject: Holmboe instability is a type of shear-driven wave instability that occurs in stably stratified fluids, producing characteristic interfacial waves and mixing at density interfaces.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.