Abstract. Simultaneous observations of airglow intensity, rotational temperature, and wind data at São João do Cariri (36.31° W; 07.40° S) by Co-located photometer, all-sky imager, and meteor radar were used to study the characteristics of vertical propagating gravity waves (GWs). Using the photometer data, the phase progression of GWs with the same propagation period in the OI 557.7nm, O₂, NaD-line, and OH (6-2) emission layers were then used to determine the upward or downward vertical propagation of the waves. The vertical phase speed and wavelength are estimated using the wave period and phase difference at different altitude. From the O₂ and OH (6-2) rotational temperatures, the total energy and the momentum flux of the downward propagating GWs were determined. For the upward propagating GW only the momentum flux and potential energy were estimated due to lack of observed wind. Further analysis of the momentum flux for each of the two events revealed that the momentum flux and potential energy of the downward propagating GWs increases with decreasing altitude. On the contrary, the GW momentum and energy of the upward propagating waves increases with increasing altitude. Thus, clearly demonstrating the transfer of momentum flux and energy from the source to the sink. This characteristic difference can be used to careful analysis the changes in GWs energy propagation due to reflection of non-primary GWs.

中文翻译：

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垂直传播重力波的动量通量特性


摘要。利用同位光度计、全天成像仪和流星雷达对圣若昂杜卡里里（São João do Cariri，西经36.31°；南纬07.40°）的气辉强度、旋转温度和风数据进行同步观测，研究垂直传播重力的特征波（GW）。使用光度计数据，使用 OI 557.7nm、O ₂ 、NaD 线和 OH (6-2) 发射层中具有相同传播周期的GW 的相级数来确定向上的或波的垂直向下传播。利用不同高度处的波周期和相位差来估计垂直相速度和波长。根据 O ₂ 和 OH (6-2) 旋转温度，确定了向下传播的引力波的总能量和动量通量。对于向上传播的重力波，由于缺乏观测到的风，仅估计了动量通量和势能。对这两个事件中每一个事件的动量通量的进一步分析表明，向下传播的引力波的动量通量和势能随着高度的降低而增加。相反，向上传播的波的引力波动量和能量随着高度的增加而增加。因此，清楚地展示了动量通量和能量从源到汇的转移。这种特征差异可以用来仔细分析由于非主引力波的反射而引起的引力波能量传播的变化。