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给出了俄罗斯彼得罗巴甫洛夫斯克观测站接收的3种甚低频/低频信号和法国DEMETER卫星接收台收集的一种甚低频信号的监测结果。研究了2004年11～12月、2005年7～9月期间在日本-堪察加地区发生的2个地震活动期,考虑了位于该地区内3条无线电波路径的第三菲涅耳区里一个或多个区内的M≥6.0地震。用振相dP或振幅dA的残差信号分析地面数据,其中dP和dA定义为观测信号与震前或紧随震后几个静日(±5天)的平均值的差值。同样卫星数据也用基于真实数据与参考数据之间差异的方法来处理。为了得到这种信号,必须在选定区域预先建立信号分布模型。这个方法包括:(a)不考虑全球性扰动,特别是地磁活动性,在具有低地震活动性的一个时段内,计算在相关区域所有可得数据的平均值。(b)计算参考面作为经度和纬度的函数多项式表达式。这个模型很好地描述了完全情况下和没有地震与磁暴活动时的真实数据。在选取的地震活动性周期内,地面与卫星数据二者都显示出了明显的异常。当然这种异常不能排除地磁活动的影响,但似乎地震力的可能性更大些。
The results of three very low frequency / low frequency signals received by the Petropavlovsk Observatory in Russia and a very low frequency signal collected by the French DEMETER satellite receiving station are given. Studied two seismicity periods occurring in Japan-Kamchatka from November to December 2004 and from July to September 2005, taking into account the third Fresnel zone located in the three radio-wave paths in the area M≥6.0 earthquakes in one or more areas. Ground data is analyzed using the residual signal of phase dP or amplitude dA, where dP and dA are defined as the difference between the observed signal and the average of several anomalies (± 5 days) before or immediately after the earthquake. The same satellite data is also treated based on the difference between real data and reference data. In order to obtain this signal, the signal distribution model must be pre-established in the selected area. This method includes: (a) Calculating the average of all available data in the relevant area over a period of low seismic activity, irrespective of global disturbances, especially geomagnetic activity. (b) Calculate the reference surface as a polynomial expression as a function of latitude and longitude. This model provides a good description of the real data with and without seismic and geomagnetic activity. During the seismogenic period selected, both ground and satellite data showed significant anomalies. Of course, this anomaly can not rule out the influence of geomagnetism, but it seems that the possibility of seismic forces is greater.