The subject of the research is the study of anomalous disturbances of the gradient of electric field potential of the atmosphere as possible precursors of earthquakes. In order to reveal such precursor Dusheti observatory (χ=42.05; λ=44.42) records of electric field potential's gradient (EFPG) of the atmosphere are considered for 41 earthquakes (M≥5.0) occurrence moments in the Caucasus region. Seasonal variations of atmospheric electric field potential gradient and inter overlapping influence of meteorological parameters upon this parameter are studied. Original method of "filtration" is devised and used in order to identify the effect of EFPG "clear" anomalies. The so-called "clear" anomalies are revealed from (-148.9 V/m) to 188.5 V/m limits and they are connected with occurrence moments of 29 earthquakes out of 41 discussed earthquakes (about 71%). "clear" anomalies manifest themselves in 11-day precursor window. Duration of anomalies is from 40 to 90 min.
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机译：该研究的主题是对作为地震可能的前兆的大气电场电势梯度的异常扰动进行研究。为了揭示这样的先驱Dusheti天文台（χ= 42.05;λ= 44.42），考虑了高加索地区41次地震（M≥5.0）发生时刻的大气电场势梯度（EFPG）记录。研究了大气电场势梯度的季节变化以及气象参数对该参数的相互影响。设计并使用了“过滤”的原始方法，以识别EFPG“清除”异常的影响。从（-148.9 V / m）到188.5 V / m的极限范围内揭示了所谓的“清晰”异常，这些异常与所讨论的41次地震（约71％）中的29次地震的发生时刻有关。 “清晰”异常会在11天前兆窗口中显示出来。异常持续时间为40到90分钟。
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