大气表面气压起伏与地磁和宇宙因素的关系
Relation of Atmosphere Surface Pressure Fluctuations with Geomagnetic and Cosmic Factors
摘要：
本文对1995年1月1日至1999年12月31日在萨拉托夫市测得的大气表面气压的时间序列进行了数字谱分析。我们还计算了气压涨落与行星地磁指数Ap和Cp之间的交叉关联函数，以及气压涨落与宇宙线强度之间的交叉关联函数。在计算的功率谱中检测到的两个峰可能与大气潮波有关。气压起伏与地磁活动Ap指数的关系在统计上不显著。压力波动与Cp指数的交叉关联函数在压力滞后4天时达到最大值0.044 ± 0.023。发现表面压力起伏与宇宙线强度之间存在统计上显著的负相关关系。交叉关联函数有两个极小值：在零时滞处的值为-0.068 ± 0.023，在压力时滞12天处的值为-0.087 ± 0.023。在长达17天的压力时间延迟下观察到压力和宇宙射线强度之间的负相关，并且可以用宇宙射线与大气相互作用的所谓凝聚机制来解释。
英文摘要：
We present results of the digital spectral analysis of the time series containing the daily samples of the atmosphere surface pressure measured at Saratov city from Jan 1, 1995 to Dec 31, 1999. We calculated also cross correlation functions between the pressure fluctuations and the planetary geomagnetic indices, Ap and Cp, and cross correlation function between these fluctuations and the cosmic-ray intensity. Two peaks detected in the calculated power spectrum are related, probably, with the atmosphere tidal waves. The relation of the pressure fluctuations with the Ap index of the geomagnetic activity is statistically insignificant. The cross correlation function between the pressure fluctuations and the Cp index has the maximal value 0.044+-0.023 at the pressure time delay 4 days. The statistically significant negative correlation is discovered between the surface pressure fluctuations and the cosmic-ray intensity. The cross correlation function has two minima: at the zero time delay with the value -0.068+-0.023, and at the pressure time delay 12 days with the value -0.087+-0.023. The negative correlation between the pressure and the cosmic-ray intensity is observed at the pressure time delay as long as 17 days and can be explained by the so-called condensation mechanism of an interaction of the cosmic rays with the atmosphere.
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