1994
DOI: 10.2151/jmsj1965.72.4_569
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Chaotic Lagrangian Motion and Heat Transport in a Steady, Baroclinic Annulus Wave

Abstract: Lagrangian motion in a steady, Baroclinic annulus wave is investigated numerically by following a tracer particle trajectory for a long period. Even for the regular Eulerian flow field of steady waves, the trajectory shows a chaotic nature, which is an example of "Lagrangian turbulence". However, the chaotic trajectory has some organized structures depending on its position in the annulus. Based on the structure, the annulus of fluid is divided into the following regions: the upper-level and lower-level jets, … Show more

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Cited by 10 publications
(20 citation statements)
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“…Comparing the present observations with the results of the numerical simulations by Sugata and Yoden (1994), we obtained several detailed structures of the flow. The main results can be summarized in the following: (1) The structures of the vortices are composed of the core region, which is rather well isolated, and next to the core the transition zone where fluid particles are frequently transported to and from its outside, but rarely to the core region; (2) The core region in both high-and low-pressure vortices is split into separate upper and Here, use is made of the same symbols as in Fig.…”
Section: Discussionsupporting
confidence: 72%
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“…Comparing the present observations with the results of the numerical simulations by Sugata and Yoden (1994), we obtained several detailed structures of the flow. The main results can be summarized in the following: (1) The structures of the vortices are composed of the core region, which is rather well isolated, and next to the core the transition zone where fluid particles are frequently transported to and from its outside, but rarely to the core region; (2) The core region in both high-and low-pressure vortices is split into separate upper and Here, use is made of the same symbols as in Fig.…”
Section: Discussionsupporting
confidence: 72%
“…On the other hand, a recent study by Sugata and Yoden (1994), hereafter referred to as SY, numerically investigated the Lagrangian motion of a fluid particle in a steady baroclinic wave by tracing the particle trajectory for a long period of time (see the introduction of SY for a review of Lagrangian studies of fluid particle motions). As schematically illustrated in Fig.…”
Section: Introductionmentioning
confidence: 99%
“…We can not conclude how and why the jet core functions as a potential barrier without further works. Sugata and Yoden (1994) showed clearly how a fluid parcel moves in a jet stream in a steady baroclinic wave in a rotating annulus fluid. The parcel repeats large meanders in the jet stream, where the projection of the trajectory of the parcel on a meridional plane is flat and elliptic and the direction of the movement is the one with an indirect circulation.…”
Section: Discussionmentioning
confidence: 99%
“…Flierl,1981;Pierrehumbert, 1991;Moses and Steinberg, 1986). Sugata and Yoden (1994), hereafter referred to as SY, investigated the Lagrangian motion in a steady baroclinic wave of wavenumber-5 by tracing a marked fluid particle for a long time in a numerical solution of their model (Sugata and Yoden, 1993). As was schematically shown in our previous papers (Tajima and Nakamura, 1995;Tajima et al, 1995aTajima et al, , 1995b, the steady baroclinic wave has been well known to have the following basic structure: the upper (UJ, eastward)-and lower (U, Jwestward)-level jets, the high (HV)-and low (LV)-pressure vortices, and the inner (TB)-, outer (OB)-and lower (LB)-boundary layers.…”
Section: Introductionmentioning
confidence: 99%
“…
AbstractChaotic Lagrangian motion in a steady baroclinic wave, which is highly relevant to meteorological and oceanographical problems, was investigated by Sugata and Yoden (1994) by tracing a marked fluid particle for a long time in a numerical solution of their model. To test their result, we have conducted experiments on steady Baroclinic waves in a differentially-heated rotating fluid annulus by tracking a 3-D trajectory of one neutrally buoyant tracer particle suspended in the fluid for a long time.
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mentioning
confidence: 99%