Symmetric Instability without Symmetry

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概要

• 論文の詳細を見る

• When a basic flow with linear or axial symmetry has a region of negative potential vorticity (hereafter PV), such a disturbance with the same symmetry as the basic flow grows that converts the negative PV of the region into non-negative PV. This is the so-called symmetric instability. In this note, the following is shown in a nondissipative adiabatic system. Irrespective of the symmetry, disturbances grow in the region of negative PV. That is, irrespective of the symmetry, a flow with negative PV is unstable. This statement is based on the conservation law of absolute circulation around a material closed curve on the isentropic surface.

• 社団法人日本気象学会の論文
• 2005-02-25

著者

• KANEHISA Hirotada

  Meteorological College

• Kanehisa H

  Meteorological Coll. Kashiwa Jpn

• Kanehisa Hirotada

  Meteorological Coll.

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• Wave Energy at Critical Level
• A Conserved Quantity Related to Vorticity Component in the Direction of ∇θ × u
• A Note on Two Opposing Mechanisms for Blocking-Onset
• Degenerate Modes of Symmetric Instability
• A System of Equations Describing Quasi-Symmetric Mesoscale Phenomena

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