scholarly journals Negative Anomalies of the Earth’s Electric Field as Earthquake Precursors

Geosciences ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 10
Author(s):  
Sergey Smirnov
Keyword(s):  
Electric Field ◽  
Field Potential ◽  
Potential Gradient ◽  
Earthquake Precursors ◽  
Electric Field Potential ◽  
The World ◽  
Air Ionization ◽  
The Impact

Anomalies of the electric field potential gradient have been observed in the near-ground air before earthquakes in different regions of the world. Such anomalies are likely caused by radon air ionization. In this study, the impact of this precursor was estimated according to continuous observations of the electric field in Kamchatka in 1997–2002.

scholarly journals Earth electric field negative anomalies as earthquake precursors

2020 ◽  
Vol 196 ◽  
pp. 01004
Author(s):  
Sergey Smirnov
Keyword(s):  
Electric Field ◽  
Field Potential ◽  
Potential Gradient ◽  
Cosmic Ray ◽  
Weather Conditions ◽  
Fair Weather ◽  
Earthquake Forecast ◽  
Electric Field Potential ◽  
Galactic Cosmic Ray ◽  
Cosmic Ray Flux

In fair weather conditions, electric field potential gradient in the near-ground air takes positive values. Negative anomalies occur under the influence of different ionizing processes such as galactic cosmic ray flux and radioactive gas emanation from the ground. In the conditions of calm geomagnetic state and fair weather, anomalies can be used for earthquake forecast. In the paper, the efficiency of earthquake forecast based on negative anomalies is under the study. It was obtained that the efficiency of such a forecast during any weather conditions is 10%.

scholarly journals Annual variation of atmospheric electricity diurnal variation maximum in Kamchatka

2021 ◽  
Vol 254 ◽  
pp. 01001
Author(s):  
Sergey Smirnov
Keyword(s):  
Electric Field ◽  
Diurnal Variation ◽  
Annual Variation ◽  
Atmospheric Electricity ◽  
Field Potential ◽  
Potential Gradient ◽  
Weather Conditions ◽  
Fair Weather ◽  
Local Conditions ◽  
Electric Field Potential

Atmospheric electric field diurnal variation measured in fair weather conditions over the ocean surface has a typical form which is called a unitary variation. It is associated with the global time and occurs simultaneously all over the planet. However, the diurnal variation, measured over the ground, depends on many local factors. The diurnal variation maximum of the electric field potential gradient, measured at Paratunka observatory, has the maximum close in time to the unitary variation maximum. In the paper we show that this maximum is determined by local conditions and is associated in time with the sunrise. The diurnal variation maximum of the electric field potential gradient, measured at Paratunka observatory in fair weather conditions, has annual variation coinciding with the annual variation of local sunrise.

scholarly journals Specific variations of the atmospheric electric field potential gradient as a possible precursor of Caucasus earthquakes

2009 ◽  
Vol 9 (4) ◽  
pp. 1221-1226 ◽  
Author(s):  
N. Kachakhidze ◽  
M. Kachakhidze ◽  
Z. Kereselidze ◽  
G. Ramishvili
Keyword(s):  
Electric Field ◽  
Field Potential ◽  
Potential Gradient ◽  
Original Method ◽  
Atmospheric Electric Field ◽  
The Caucasus ◽  
Caucasus Region ◽  
Electric Field Potential ◽  
The Subject ◽  
Precursors Of Earthquakes

Abstract. 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 (φ=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.

scholarly journals The influence of circulation weather types on the exposure of the biosphere to atmospheric electric fields

2020 ◽  
Vol 65 (1) ◽  
pp. 93-105 ◽  
Author(s):  
K. Kourtidis ◽  
K. Szabóné André ◽  
A. Karagioras ◽  
I.-A. Nita ◽  
G. Sátori ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Field Potential ◽  
Low Frequency ◽  
Potential Gradient ◽  
Human Condition ◽  
Weather Types ◽  
Mean Values ◽  
Using Data ◽  
The Impact

AbstractWe present an analysis of the impact of circulation weather types (CT) on a factor that might influence biological systems and the human condition, the electric state of the atmosphere. We present results on the influence of CT to the magnitude, the direction (positive or negative), the fluctuation magnitude, and the short-term peaks of the atmospheric electric field (potential gradient, PG), using data from a station in Greece. CTs with high vorticity centers over Greece are associated with high positive and negative excursions of the PG, higher PG variability, and rain events. CTs with thinner 850–500 hPa layer are associated with higher daily mean values of fair-weather PG. We also examine the influence of CT on the frequency and amplitude of the naturally occurring extremely low-frequency electric field fluctuations known as Schumann resonances (SR) using data from a station in Hungary. The first and second mode SR frequencies are increased during CTs associated with higher 500 hPa geopotential heights and higher 850–500 hPa layer thickness. This hints to a lower-upper atmosphere coupling. So, CTs not only influence the general temperature and humidity conditions to which the biosphere is exposed, but they also affect its exposure to atmospheric electric fields.

scholarly journals Influence of a single lightning on the intensity of an air electric field and acoustic emission of near surface rocks

2012 ◽  
Vol 4 (1) ◽  
pp. 627-640
Author(s):  
S. E. Smirnov ◽  
Y. V. Marapulets
Keyword(s):  
Acoustic Emission ◽  
Electric Field ◽  
Characteristic Time ◽  
Electric Field Intensity ◽  
Lightning Discharge ◽  
Field Potential ◽  
Potential Gradient ◽  
Frequency Range ◽  
Near Surface ◽  
Electric Field Potential

Abstract. The effect of a single lightning discharge on electric field intensity in the near ground atmosphere was investigated. The effect appeared as a sharp fall of electric field potential gradient from 80 V m−1 up to −21 V m−1. The process of intensity recovery is described by flat capacitor model with characteristic time of recovery of 17 c. Simultaneously with electric field, the acoustic emission response in the near surface rocks on lightning discharge was registered in the frequency range of 6.5–11 kHz.

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