Abstract. In this work we show the result of the numerical simulation of the gravity waves (GWs) D region disturbance. Effectively, using the Glukhov-Pasko-Inan (GPI) model of the electron density in the D region we were figured out the response of the electron density due to gravity wave neutral atmosphere oscillation. As a consequence to the D region disturbance, the electron density sometimes increases when the neutral atmosphere density decreases and vice versa. This behavior was interpreted by the decreases or increases of ionization rate by chemical loss process. In a second simulation work, we used the Long Wave Propagation Capability (LWPC) code to simulate the Very Low Frequency (VLF) signal when the gravity wave disturbance crossed the VLF path. The effect of the disturbance is to decrease the VLF signal reflection height below the ambient altitude (87 km) when the electron density increases. On the other hand and when the electron density drops, the VLF reflection altitude increased higher than 87 km.

中文翻译：

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重力波D区域扰动的模拟及其对LWPC模拟VLF信号的影响

摘要。在这项工作中，我们展示了重力波（GWs）D区域扰动的数值模拟结果。有效地，使用D区电子密度的Glukhov-Pasko-Inan（GPI）模型，我们得出了由于重力波中性大气振荡引起的电子密度响应。由于D区域干扰，中性大气密度降低时，电子密度有时会增加，反之亦然。通过化学损失过程电离速率的降低或增加来解释此行为。在第二项模拟工作中，当重力波干扰越过VLF路径时，我们使用了长波传播能力（LWPC）代码来模拟甚低频（VLF）信号。当电子密度增加时，干扰的作用是将VLF信号反射高度降低到低于环境高度（87 km）以下。另一方面，当电子密度下降时，VLF反射高度增加到高于87 km。