Matches in SemOpenAlex for { <https://semopenalex.org/work/W645135534> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W645135534 abstract "Baroclinic instability, the fundamental mechanism underlying the generationof baroclinic eddies in the atmosphere and ocean is investigated in thetwo-layer, quasi-geostrophic model. The aim is to bridge the gap in understandingbetween analytical theories and high resolution numerical simulationsof more realistic flows.In chapter 1 the physical motivation for the problems, two-layer model andnumerical scheme are introduced. In chapter 2, the instability of a uniformflow profile without Ekman friction is investigated. The success of a weaklynonlinear theory due to Warn & Gauthier at finite criticality is assessed overthe full parameter space. The relevance of nonlinear bounds on wave amplitudeand perturbation energy due to Shepherd is also evaluated.Chapters 3 and 4 investigate the Holopainen instability, whereby a uniformflow profile, otherwise stable in frictionless flow, is destabilized by the additionof a small amount of Ekman friction. In chapter 3, the physical mechanisms ofthe baroclinic and Holopainen instabilities are contrasted in terms of potentialvorticity disturbances. The instability of the Eady model is also discussed.In chapter 4, a weakly nonlinear theory due to Romea is shown to beaccurate for flows unstable to the Holopainen instability and flows unstableto baroclinic instability in the presence of significant Ekman friction. Anintermediate flow region is found where Warn & Gauthier’s theory is accurateat early times, but the final state is well predicted by Romea’s theory.The equilibration of an unstable baroclinic jet is investigated in chapter 5.A predictive theory due to Esler based on global constraints is extended to testtwo new hypotheses, which are also shown to be successful in predicting theequilibrated flow profile of initially symmetric jets. The theory is adapted toinclude asymmetric initial jets where each hypothesis is found to have limitedquantitative success." @default.
- W645135534 created "2016-06-24" @default.
- W645135534 creator A5069403949 @default.
- W645135534 date "2012-04-28" @default.
- W645135534 modified "2023-09-26" @default.
- W645135534 title "Instability and nonlinear equilibration of baroclinic flows" @default.
- W645135534 hasPublicationYear "2012" @default.
- W645135534 type Work @default.
- W645135534 sameAs 645135534 @default.
- W645135534 citedByCount "0" @default.
- W645135534 crossrefType "dissertation" @default.
- W645135534 hasAuthorship W645135534A5069403949 @default.
- W645135534 hasConcept C111603439 @default.
- W645135534 hasConcept C121332964 @default.
- W645135534 hasConcept C121864883 @default.
- W645135534 hasConcept C140820882 @default.
- W645135534 hasConcept C157331469 @default.
- W645135534 hasConcept C158622935 @default.
- W645135534 hasConcept C179065325 @default.
- W645135534 hasConcept C196558001 @default.
- W645135534 hasConcept C200114574 @default.
- W645135534 hasConcept C207821765 @default.
- W645135534 hasConcept C53631411 @default.
- W645135534 hasConcept C57879066 @default.
- W645135534 hasConcept C62520636 @default.
- W645135534 hasConcept C74650414 @default.
- W645135534 hasConcept C98002172 @default.
- W645135534 hasConceptScore W645135534C111603439 @default.
- W645135534 hasConceptScore W645135534C121332964 @default.
- W645135534 hasConceptScore W645135534C121864883 @default.
- W645135534 hasConceptScore W645135534C140820882 @default.
- W645135534 hasConceptScore W645135534C157331469 @default.
- W645135534 hasConceptScore W645135534C158622935 @default.
- W645135534 hasConceptScore W645135534C179065325 @default.
- W645135534 hasConceptScore W645135534C196558001 @default.
- W645135534 hasConceptScore W645135534C200114574 @default.
- W645135534 hasConceptScore W645135534C207821765 @default.
- W645135534 hasConceptScore W645135534C53631411 @default.
- W645135534 hasConceptScore W645135534C57879066 @default.
- W645135534 hasConceptScore W645135534C62520636 @default.
- W645135534 hasConceptScore W645135534C74650414 @default.
- W645135534 hasConceptScore W645135534C98002172 @default.
- W645135534 hasLocation W6451355341 @default.
- W645135534 hasOpenAccess W645135534 @default.
- W645135534 hasPrimaryLocation W6451355341 @default.
- W645135534 hasRelatedWork W1545203868 @default.
- W645135534 hasRelatedWork W1977673041 @default.
- W645135534 hasRelatedWork W1986684524 @default.
- W645135534 hasRelatedWork W2047340075 @default.
- W645135534 hasRelatedWork W2120567147 @default.
- W645135534 hasRelatedWork W2127067093 @default.
- W645135534 hasRelatedWork W2138462632 @default.
- W645135534 hasRelatedWork W2152641160 @default.
- W645135534 hasRelatedWork W2154091511 @default.
- W645135534 hasRelatedWork W2165862396 @default.
- W645135534 hasRelatedWork W2168616244 @default.
- W645135534 hasRelatedWork W2169202988 @default.
- W645135534 hasRelatedWork W2176004418 @default.
- W645135534 hasRelatedWork W2176341886 @default.
- W645135534 hasRelatedWork W2950028261 @default.
- W645135534 hasRelatedWork W2980780950 @default.
- W645135534 hasRelatedWork W298088843 @default.
- W645135534 hasRelatedWork W2996763540 @default.
- W645135534 hasRelatedWork W3104181694 @default.
- W645135534 hasRelatedWork W2507104019 @default.
- W645135534 isParatext "false" @default.
- W645135534 isRetracted "false" @default.
- W645135534 magId "645135534" @default.
- W645135534 workType "dissertation" @default.