The purpose of this article is to attract the attention of the scientific community to atmospheric gravity waves (GWs) as the most likely mechanism for the transfer of energy from the surface layers of the atmosphere ...The purpose of this article is to attract the attention of the scientific community to atmospheric gravity waves (GWs) as the most likely mechanism for the transfer of energy from the surface layers of the atmosphere to space heights and describe the channel of seismic-ionospheric relations formed in this way. The article begins with a description and critical comparison of several basic mechanisms of action on the ionosphere from below: the propagation of electromagnetic radiation;the closure of the atmospheric currents through the ionosphere;the penetration of waves throughout the neutral atmosphere. A further part of the article is devoted to the analysis of theoretical and experimental information relating to the actual GWs. Simple analytical expressions are written that allow one to calculate the parameters of GWs in specific experimental situations. Specificity of GW dispersion properties and features of their propagation are analyzed on this mathematical basis, processes of amplitude amplification and dissipation of GWs with height are investigated, the mechanism of generation of ionosphere-magnetosphere current systems is described and their quantitative characteristics are determined. The experimental part presents an analysis of GWs global distribution in the thermosphere derived from the data of the instrument NACS (Neutral Atmosphere Composition Spectrometer) onboard the satellite DE-2 (NASA, 1981-1983). The statistical association of registered ionospheric disturbances with earthquakes is demonstrated. The results of DE-2 data processing are backed up by comparison with data from the DEMETER satellite (CNES, 2005-2010) whose purpose was to study the ionospheric effects of earthquakes. Specific features of GWs that characterize these waves as a factor of influence on the ionosphere from below are indicated.展开更多
本文介绍近来由俄国、希腊、意大利、乌克兰以及格鲁吉亚执行的欧洲合作项目SUPRE(Study of the ULF electromagnetic Phenomena Related to Earthquakes与地震相关的超低频电磁现象研究)的研究成果,讨论地震孕育区的地震-电磁监测方法...本文介绍近来由俄国、希腊、意大利、乌克兰以及格鲁吉亚执行的欧洲合作项目SUPRE(Study of the ULF electromagnetic Phenomena Related to Earthquakes与地震相关的超低频电磁现象研究)的研究成果,讨论地震孕育区的地震-电磁监测方法的进展和地震灾害评估。主要内容是:在特定地震活动区正在使用的观测技术、提取地震前兆信号的数据处理方法以及地震孕育过程的模型。在此基础之上,对最新提出的、作为下一步地震-电磁合作研究设想的SHARP(Study of Seism ic Hazard Anomalies Recognition Possi-bilities,地震灾害异常识别的可行性研究)计划的战略进行了评论。文中对它的预研结果进行了介绍。展开更多
文摘The purpose of this article is to attract the attention of the scientific community to atmospheric gravity waves (GWs) as the most likely mechanism for the transfer of energy from the surface layers of the atmosphere to space heights and describe the channel of seismic-ionospheric relations formed in this way. The article begins with a description and critical comparison of several basic mechanisms of action on the ionosphere from below: the propagation of electromagnetic radiation;the closure of the atmospheric currents through the ionosphere;the penetration of waves throughout the neutral atmosphere. A further part of the article is devoted to the analysis of theoretical and experimental information relating to the actual GWs. Simple analytical expressions are written that allow one to calculate the parameters of GWs in specific experimental situations. Specificity of GW dispersion properties and features of their propagation are analyzed on this mathematical basis, processes of amplitude amplification and dissipation of GWs with height are investigated, the mechanism of generation of ionosphere-magnetosphere current systems is described and their quantitative characteristics are determined. The experimental part presents an analysis of GWs global distribution in the thermosphere derived from the data of the instrument NACS (Neutral Atmosphere Composition Spectrometer) onboard the satellite DE-2 (NASA, 1981-1983). The statistical association of registered ionospheric disturbances with earthquakes is demonstrated. The results of DE-2 data processing are backed up by comparison with data from the DEMETER satellite (CNES, 2005-2010) whose purpose was to study the ionospheric effects of earthquakes. Specific features of GWs that characterize these waves as a factor of influence on the ionosphere from below are indicated.
文摘本文介绍近来由俄国、希腊、意大利、乌克兰以及格鲁吉亚执行的欧洲合作项目SUPRE(Study of the ULF electromagnetic Phenomena Related to Earthquakes与地震相关的超低频电磁现象研究)的研究成果,讨论地震孕育区的地震-电磁监测方法的进展和地震灾害评估。主要内容是:在特定地震活动区正在使用的观测技术、提取地震前兆信号的数据处理方法以及地震孕育过程的模型。在此基础之上,对最新提出的、作为下一步地震-电磁合作研究设想的SHARP(Study of Seism ic Hazard Anomalies Recognition Possi-bilities,地震灾害异常识别的可行性研究)计划的战略进行了评论。文中对它的预研结果进行了介绍。
