alexa Long-Memory Trends in Disturbances of Radon in Soil Prior to the Twin ML=5.1 Earthquakes of 17 November 2014 Greece | OMICS International | Abstract
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

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Research Article

Long-Memory Trends in Disturbances of Radon in Soil Prior to the Twin ML=5.1 Earthquakes of 17 November 2014 Greece

Nikolopoulos D1*, Petraki E2, Nomicos C3, Koulouras G3, Kottou S4 and Yannakopoulos PH1
1TEI of Piraeus, Department of Electronic Computer Systems Engineering, Petrou Ralli and Thivon 250, GR-12244, Aigaleo, Greece
2Brunel University, Department of Engineering and Design, Kingston Lane, Uxbridge, Middlesex UB8 3PH, London, UK
3TEI of Athens, Department of Electronic Engineering, Agiou Spyridonos, GR-12243, Aigaleo, Athens, Greece
4University of Athens, Medical School, Department of Medical Physics, Mikras Asias 75, GR-11527 Athens, Greece
Corresponding Author : Nikolopoulos D
TEI of Piraeus, Department of Electronic Computer Systems Engineering
Petrou Ralli & Thivon 250, GR-12244 Aigaleo, Greece
Tel: +0030-21 5381560
E-mail: [email protected]
Received November 26, 2014; Accepted December 20, 2014; Published January 01, 2015
Citation: Nikolopoulos D, Petraki E, Nomicos C, Koulouras G, Kottou S, et al. (2015) Long-Memory Trends in Disturbances of Radon in Soil Prior to the Twin ML=5.1 Earthquakes of 17 November 2014 Greece. J Earth Sci Clim Change 6:244. doi: 10.4172/2157-7617.1000244
Copyright: ©2015 Nikolopoulos D, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

On 17 November 2014, at 23:05 and 23:09 local time, two shallow earthquakes of ML=5.1 occurred in Prokopion, Chalkis, 86 km North-West of Athens, Greece. Prior to the earthquakes a significant radon anomaly was observed by a telemetric radon station operating with a Barasol MC2 probe (Algade France). The anomaly lasted approximately between 24 Oct 2014 and 10 November 2014. This paper reports the trends of long-memory that were addressed through Rescaled Range (R/S) analysis and Detrended Fluctuation Analysis (DFA). Hurst exponents above 0.8 were found by R/S analysis during the radon anomaly. The signal exhibited persistent behavior. DFA verified the findings of R/S analysis within the anomaly.

Keywords

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