Academic literature on the topic 'Quasigeostrophic'
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Journal articles on the topic "Quasigeostrophic"
Egger, Joseph. "Mountain torques in quasigeostrophic theory." Meteorologische Zeitschrift 12, no. 6 (December 1, 2003): 301–4. http://dx.doi.org/10.1127/0941-2948/2003/0012-0301.
Full textMiyazaki, Takeshi, Koki Ueno, and Tomoyuki Shimonishi. "Quasigeostrophic, Tilted Spheroidal Vortices." Journal of the Physical Society of Japan 68, no. 8 (August 15, 1999): 2592–601. http://dx.doi.org/10.1143/jpsj.68.2592.
Full textMiyazaki, Takeshi, Masahiro Shimada, and Naoya Takahashi. "Quasigeostrophic Wire-Vortex Model." Journal of the Physical Society of Japan 69, no. 10 (October 15, 2000): 3233–43. http://dx.doi.org/10.1143/jpsj.69.3233.
Full textMiyazaki, Takeshi, Takahiro Fujiwara, and Masahiro Yamamoto. "Quasigeostrophic Confocal Spheroidal Vortices." Journal of the Physical Society of Japan 72, no. 11 (November 15, 2003): 2786–803. http://dx.doi.org/10.1143/jpsj.72.2786.
Full textMiyazaki, Takeshi, Yu Furuichi, and Naoya Takahashi. "Quasigeostrophic Ellipsoidal Vortex Model." Journal of the Physical Society of Japan 70, no. 7 (July 15, 2001): 1942–53. http://dx.doi.org/10.1143/jpsj.70.1942.
Full textDuan, Jinqiao, and Beniamin Goldys. "Ergodicity of stochastically forced large scale geophysical flows." International Journal of Mathematics and Mathematical Sciences 28, no. 6 (2001): 313–20. http://dx.doi.org/10.1155/s0161171201012443.
Full textDelsole, Timothy. "Stochastic Models of Quasigeostrophic Turbulence." Surveys in Geophysics 25, no. 2 (March 2004): 107–49. http://dx.doi.org/10.1023/b:geop.0000028164.58516.b2.
Full textJuckes, Martin. "Quasigeostrophic Dynamics of the Tropopause." Journal of the Atmospheric Sciences 51, no. 19 (October 1994): 2756–68. http://dx.doi.org/10.1175/1520-0469(1994)051<2756:qdott>2.0.co;2.
Full textCarton, Xavier. "Instability of Surface Quasigeostrophic Vortices." Journal of the Atmospheric Sciences 66, no. 4 (April 1, 2009): 1051–62. http://dx.doi.org/10.1175/2008jas2872.1.
Full textZhmur, V. V., and K. K. Pankratov. "Dynamics of desingularized quasigeostrophic vortices." Physics of Fluids A: Fluid Dynamics 3, no. 5 (May 1991): 1464. http://dx.doi.org/10.1063/1.857998.
Full textDissertations / Theses on the topic "Quasigeostrophic"
Nadeau, Louis-Philippe. "Dynamics of a quasigeostrophic antarctic circumpolar current." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96911.
Full textDans cette thèse, on étudié l'idée qu'une circulation de type bassin peut influencer et contrôler la dynamique du Courant Circumpolaire Antarctique (CCA) à l'aide de modèles analytique et numérique. Dans un premier temps, on développe un modèle analytique simple à deux couches pour estimer l'évolution du transport en fonction de l'amplitude du vent appliqué à la surface. À très faible amplitude, ce modèle prévoit un transport minimum non-nul. Deux régimes dynamique distincts succèdent à ce minimum: un régime de type "Stommel", dans lequel le transport augmente linéairement et un régime de "saturation" dans lequel le transport plafonne. On utilise la géométrie des "contours géostrophiques", pierre angulaire de la théorie, pour obtenir la distribution verticale de la circulation et estimer l'occurrence de ce régime de saturation.On effectue ensuite un grand nombre de simulations numériques à haute résolution spatiale, en variant la plupart des paramètres du modèle afin de tester la théorie analytique. On définit un profil de vent "référence" soufflant vers l'est suivant une fonction sin^2(y), où y est la latitude. Les simulations utilisant ce profil de référence correspondent qualitativement aux prévisions de la théorie analytique. Par contre, on observe des différences quantitatives dans le régime saturation: i) lorsqu'un plateau continental est ajouté à la frontière ouest et ii) lorsqu'on varie le coefficient de friction au fond. Lorsqu'on ajoute un plateau continental, les flux de tourbillons associés aux jets longitudinaux favorisent la circulation abyssale et baissent ainsi les valeurs de saturation du transport. Lorsqu'on augmente le coefficient de friction, la circulation abyssale est supprimée, ce qui augmente les valeurs de saturation du transport.Dans les expériences où l'on rajoute un vent constant au profil de référence, un décalage est observé entre les résultats des simulations numériques et les prévisions du modèle analytique. Cela définit un nouveau régime où le vent lui-même est fort en comparaison à son rotationnel. Le flux vertical de quantité de mouvement des tourbillons méso-échelle peut être utilisé afin de distinguer les différents régimes. En effet, ce flux est orienté vers le haut lorsque la dynamique est dominée par le rotationnel tandis qu'il est vers le bas lorsque le vent lui-même domine la dynamique. Dans le régime dominé par le rotationnel, une circulation de type Sverdrup est observée dans l'ensemble du bassin, même en absence de péninsules. De plus, le transport y est saturé, tel que suggéré par la théorie analytique.Le modèle analytique est ensuite généralisé au cas où la stratification est continue. On effectue des simulations numériques où la résolution verticale est variée afin de tester cette théorie généralisée. Ces simulations montrent que les modèles à 2 et 5 couches donnent des résultats similaires lorsque les effets d'inertie sont faibles. Par contre, d'intenses circulations générées au-dessus de la topographie bloquent le détroit de Drake et réduisent le transport lorsque les effets d'inertie sont importants. Cependant, ce comportement disparaît lorsqu'une topographie plus réaliste est utilisée. Dans ce contexte, les simulations numériques correspondent aux prévisions du modèle analytique. De plus, on observe que dans un régime où le rotationnel est dominant, les péninsules jouent un rôle important dans la dynamique lorsque le vent est faible tandis que leur rôle devient de plus en plus négligeable lorsque le vent augmente.
Vallgren, Andreas. "Statistical characteristics of two-dimensional and quasigeostrophic turbulence." Licentiate thesis, KTH, Linné Flow Center, FLOW, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-13128.
Full textTwo codes have been developed and implemented for use on massively parallelsuper computers to simulate two-dimensional and quasigeostrophic turbulence.The codes have been found to scale well with increasing resolution and width ofthe simulations. This has allowed for the highest resolution simulations of two-dimensional and quasigeostrophic turbulence so far reported in the literature.The direct numerical simulations have focused on the statistical characteristicsof turbulent cascades of energy and enstrophy, the role of coherent vorticesand departures from universal scaling laws, theoretized more than 40 yearsago. In particular, the investigations have concerned the enstrophy and energycascade in forced and decaying two-dimensional turbulence. Furthermore, theapplicability of Charney’s hypotheses on quasigeostrophic turbulence has beentested. The results have shed light on the flow evolution at very large Reynoldsnumbers. The most important results are the robustness of the enstrophycascade in forced and decaying two-dimensional turbulence, the unexpecteddependency on an infrared Reynolds number in the spectral scaling of theenergy spectrum in the inverse energy cascade, and the validation of Charney’spredictions on the dynamics of quasigeostrophic turbulence. It has also beenshown that the scaling of the energy spectrum in the enstrophy cascade isinsensitive to intermittency in higher order statistics, but that corrections mightapply to the ”universal” Batchelor-Kraichnan constant.
Wells, David Reese. "A Two-Level Method For The Steady-State Quasigeostrophic Equation." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23090.
Full textWe examine the Argyris finite element and derive the transformation matrix necessary to perform calculations on the reference triangle. We use the Argyris element because it is a high-order, conforming finite element for fourth order problems.
In order to increase computational efficiency, we consider a two-level method to linearize the system of equations. This allows us to solve a small, nonlinear system and then use the result to linearize a larger system.
Master of Science
Zidikheri, Meelis Juma, and m. zidikheri@bom gov au. "Dynamical Subgrid-scale Parameterizations for Quasigeostrophic Flows using Direct Numerical Simulations." The Australian National University. Research School of Physical Sciences and Engineering, 2008. http://thesis.anu.edu.au./public/adt-ANU20090108.112027.
Full textZidikheri, Meelis Juma. "Dynamical subgrid-scale parameterizations for quasigeostrophic flows using direct numerical simulations /." View thesis entry in Australian Digital Theses, 2007. http://thesis.anu.edu.au/public/adt-ANU20090108.112027/index.html.
Full textJohnson, John Edward. "An assessment of data requirements for quasigeostrophic nowcasts and hindcasts of a mesoscale eddy field in the California Current System with application to fall transition." Diss., Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA231394.
Full textDissertation Supervisor(s): Mooers, Christopher N.K. Description based on signature page August 25, 2009. DTIC Descriptor(s): Accuracy, California, Cyclones, Data Storage Systems, Density, Digital Simulation, Dynamics, Environments, Functions (Mathematics), Height, Images, Mathematical Models, Mean, North (Direction), Ocean Currents, Ocean Surface, Oceans, Predictions, Pressure Gradients, Requirements, Satellite Photography, Sea Water, Sensitivity, Surface Temperature, Surfaces, Topography, Transitions, Upwelling, Wind, Wind Stress. DTIC Indicator(s): Nowcasting, Hindcasting, Ocean models, Ocean currents, Eddies (Fluid mechanics), California current, OPTOMA Project, Theses, PE61153N. Author(s) subject terms: Mesoscale Ocean Models, Fall Transition, AVHRR, Data Requirements, California Current System, GEOSAT Altimetry. Includes bibliographical references (p. 331-343). Also available online.
Blackbourn, Luke A. K. "An analytical, phenomenological and numerical study of geophysical and magnetohydrodynamic turbulence in two dimensions." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/4291.
Full textKiss, Andrew Elek, and Andrew Kiss@anu edu au. "Dynamics of laboratory models of the wind-driven ocean circulation." The Australian National University. Research School of Earth Sciences, 2001. http://thesis.anu.edu.au./public/adt-ANU20011018.115707.
Full textBooks on the topic "Quasigeostrophic"
R, Holland William, Malanotte-Rizzoli Paola 1946-, and United States. National Aeronautics and Space Administration., eds. Assimilation of altimeter data into a quasigeostrophic model of the Gulf Stream system. [Washington, DC: National Aeronautics and Space Administration, 1995.
Find full textR, Holland William, Malanotte-Rizzoli Paola 1946-, and United States. National Aeronautics and Space Administration., eds. Assimilation of altimeter data into a quasigeostrophic model of the Gulf Stream system. [Washington, DC: National Aeronautics and Space Administration, 1995.
Find full text1946-, Malanotte-Rizzoli Paola, Holland William R, and United States. National Aeronautics and Space Administration., eds. Assimilation of altimeter data into a quasigeostrophic model of the Gulf Stream system. [Washington, DC: National Aeronautics and Space Administration, 1995.
Find full text1946-, Malanotte-Rizzoli Paola, Holland William R, and United States. National Aeronautics and Space Administration., eds. Assimilation of altimeter data into a quasigeostrophic model of the Gulf Stream system. [Washington, DC: National Aeronautics and Space Administration, 1995.
Find full textQuasigeostrophic Theory Of Oceans And Atmosphere Topics In The Dynamics And Thermodynamics Of The Fluid Earth. Springer, 2012.
Find full textUnited States. National Aeronautics and Space Administration., ed. Assimilation Of Altimeter Data Into A Quasigeostrophic Model Of The Gulf Stream System... NASA-CR-205501... Oct. 31, 1997. [S.l: s.n., 1998.
Find full textChemin, Jean-Yves, Benoit Desjardins, Isabelle Gallagher, and Emmanuel Grenier. Mathematical Geophysics. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198571339.001.0001.
Full textBook chapters on the topic "Quasigeostrophic"
Lackmann, Gary. "Quasigeostrophic Theory." In Midlatitude Synoptic Meteorology, 35–66. Boston, MA: American Meteorological Society, 2011. http://dx.doi.org/10.1007/978-1-878220-56-1_2.
Full textÖzsoy, Emin. "Quasigeostrophic Theory." In Geophysical Fluid Dynamics I, 183–92. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-16973-2_7.
Full textHolland, William R. "Quasigeostrophic Modelling of Eddy-Resolved Ocean Circulation." In Advanced Physical Oceanographic Numerical Modelling, 203–31. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-017-0627-8_14.
Full textBartello, Peter. "Quasigeostrophic and stratified turbulence in the atmosphere." In IUTAM Symposium on Turbulence in the Atmosphere and Oceans, 117–30. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-94-007-0360-5_10.
Full textPedlosky, Joseph. "Quasigeostrophic Motion of a Stratified Fluid on a Sphere." In Geophysical Fluid Dynamics, 336–489. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4612-4650-3_6.
Full textDuan, Jinqiao, Peter E. Kloeden, and Björn Schmalfuss. "Exponential stability of the quasigeostrophic equation under random perturbations." In Stochastic Climate Models, 241–56. Basel: Birkhäuser Basel, 2001. http://dx.doi.org/10.1007/978-3-0348-8287-3_10.
Full textNielsen-Gammon, John W., and David A. Gold. "Dynamical Diagnosis: A Comparison of Quasigeostrophy and Ertel Potential Vorticity." In Synoptic—Dynamic Meteorology and Weather Analysis and Forecasting, 183–202. Boston, MA: American Meteorological Society, 2008. http://dx.doi.org/10.1007/978-0-933876-68-2_9.
Full textDavies, H. C., and H. Wernli. "DYNAMICAL METEOROLOGY | Quasigeostrophic Theory." In Encyclopedia of Atmospheric Sciences, 393–403. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-12-382225-3.00326-1.
Full textSalmon, Rick. "Geostrophic Turbulence." In Lectures on Geophysical Fluid Dynamics. Oxford University Press, 1998. http://dx.doi.org/10.1093/oso/9780195108088.003.0009.
Full textCarton, X. J., and J. C. Mcwilliams. "Barotropic and Baroclinic Instabilities of Axisymmetric Vortices in a Quasigeostrophic Model." In Mesoscale/Synoptic Coherent structures in Geophysical Turbulence, 225–44. Elsevier, 1989. http://dx.doi.org/10.1016/s0422-9894(08)70188-0.
Full textConference papers on the topic "Quasigeostrophic"
Miglietta, Victoria M., and Manhar R. Dhanak. "Current Turbine Array Placement in Quasigeostrophic Flows Over Bottom Topography." In OCEANS 2019 MTS/IEEE SEATTLE. IEEE, 2019. http://dx.doi.org/10.23919/oceans40490.2019.8962717.
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