| 正压大气波动的4波共振和准共振 |
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| 引用本文： | 陆维松.正压大气波动的4波共振和准共振[J].南京气象学院学报,1994,17(1):11-19. |
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| 作者姓名： | 陆维松 |
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| 作者单位： | 南京气象学院气象系 |
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| 摘 要： | 从准地转正压涡度方程，提出新的双时间尺度，首次导得了正压大气波动的４波准共振耦合方程，即广义Ｌａｎｄａｕ方程，利用新的守恒量，求得其甚低频周期解，其周期为一年左右，这可认为是实际大气中年际振荡的一种新的物理机制。并可求出４波准共振波矢。
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| 关 键 词： | 正压大气 准共振 波动共振 |
4-WAVERESONANCEANDQUASI-RESONANCEOF BAKOTROPICATMOSPHERICWAVEMOTION |
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| Lu Weisong.4-WAVERESONANCEANDQUASI-RESONANCEOF BAKOTROPICATMOSPHERICWAVEMOTION[J].Journal of Nanjing Institute of Meteorology,1994,17(1):11-19. |
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| Authors: | Lu Weisong |
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| Abstract: | Startinig from the quasi-geostrophic barotropic vorticity equation .a new bi-time scale scheme is proposed and obtained for the first time are the coupled equtions of 4- wavequasi-resonance for the barotropic wave motion .i. c.. the Landau equations in a broad sense .And with the aid of new conservative quantities. the very low frequency periodic solution of the equations is found with the period of about one year. This can be regarded as a new phys-ical mechanism of interannual oscillation in the real atmosphere. Besides. the wave vectors of 4-wave quasi-resonance are also obtained in this paper. |
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| Keywords: | barotropic atmosphere 4-wave resonance quasi-resonance |
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