Fractal Analysis of Pre-Seismic Electromagnetic and Radon Precursors: A Systematic Approach

Dimitrios, N; Ermioni, P; HY, Panayotis; Demetrios, C

doi:10.4172/2157-7617.1000376

Cited by 4 publications

(4 citation statements)

References 73 publications

(286 reference statements)

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“…Strong anti-persistent, longlasting interaction exists. Observing that most high values are near the fault, the anti-persistence behavior justifies that the values after the fault will be low while the remaining values will have a trend of higher-lower values; all these values are lower than the corresponding values on the fault [56]. The fractal dimensions in the horizontal direction ( Figure 6a This is characteristically shown in Figure 7 where the fractal dimensions with reference to the distance from the fault are presented.…”

Section: Resultsmentioning

confidence: 87%

“…This means that the system goes away from strong anti-persistence and fractality when it is away from the fault; strong anti-persistence gradually diminishes. The significance of the strong anti-persistence behavior has been mentioned by several publications [56][57][58][59][60]. In the above publications, it was reported, in a multi-facet way, that the strong anti-persistent behavior, similarly to the strong persistence behavior, is a footprint of hidden activity in soil radon or environmental electromagnetic disturbances.…”

Section: Resultsmentioning

confidence: 98%

“…Strong anti-persistent, long-lasting interaction exists. Observing that most high values are near the fault, the anti-persistence behavior justifies that the values after the fault will be low while the remaining values will have a trend of higher-lower values; all these values are lower than the corresponding values on the fault [56]. The fractal dimensions in the horizontal direction ( Figure 6a and 135°) via arbitrarily selecting pairs of measurements from the whole dataset (each pair indicated with a different ID number), so that all the selected series of pairs correspond to each one of the four directions; 2) reorganizing the series of pairs of 1), with reference to their intra-pair distance; and 3) arbitrary selecting pairs of measurements with different distances from the fault.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Fractal Dimension Analysis Applied to Soil CO2 Fluxes in Campotosto’s Seismic Area, Central Italy

et al. 2020

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This article reports fractal dimension analysis applied to soil CO2 fluxes measured in an Italian seismic area. The work was carried out with the use of a calibrated flux chamber unit. The fractal dimension (FD) from isotropic variograms was used as a method to understand related scale-dependent phenomena. The aim was to investigate the spatial variability of CO2 flux measurements in four directions (horizontal, vertical, 45° and 135° directions) related to different distances between the measuring points and from a fault. High fractal dimension values were found (2.5 ≤ FD ≤ 3.0). These imply strong anti-persistent behavior near to and far from the fault. Lower fractal dimensions were addressed at longer distances from the fault.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

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Fractal Dimension Analysis Applied to Soil CO2 Fluxes in Campotosto’s Seismic Area, Central Italy

et al. 2020

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“…According to this model, the transportation of in-earth gasses is facilitated through carrier gasses and water (Gregoric et al 2008). Nikolopoulos et al (2016) proposed the, so called, asperity model. This model has been used with success to explain anomalous emission of gas concentration during earthquake generation.…”

Section: Available Modelsmentioning

confidence: 99%

CO2 and Radon Emissions as Precursors of Seismic Activity

et al. 2021

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This paper reports a review on the relationship between seismic activity and the emissions of CO2 and radon. Direct, indirect and sampling methods are mainly employed to measure CO2 flux and concentration in seismic areas. The accumulation chamber technique is the mostly used in the literature. Radon gas emission in seismic areas can be considered as a short-term pre-seismic precursor. The study and the measurement of radon gas activity prior to earthquakes can be performed through active techniques, with the use of high-precision active monitors and through passive techniques with the use of passive detectors. Several investigators report models to explain the anomalous behavior of in-earth fluid gasses prior to earthquakes. Models are described and discussed.

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Long-lasting patterns of radon in groundwater at Panzhihua, China: Results from DFA, fractal dimensions and residual radon concentration

Alam

Wang

Zhao³

et al. 2019

Geochem. J.

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Fractal Analysis of Pre-Seismic Electromagnetic and Radon Precursors: A Systematic Approach

Cited by 4 publications

References 73 publications

Fractal Dimension Analysis Applied to Soil CO2 Fluxes in Campotosto’s Seismic Area, Central Italy

Fractal Dimension Analysis Applied to Soil CO2 Fluxes in Campotosto’s Seismic Area, Central Italy

CO2 and Radon Emissions as Precursors of Seismic Activity

Long-lasting patterns of radon in groundwater at Panzhihua, China: Results from DFA, fractal dimensions and residual radon concentration

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