Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The results and developments of the radon monitoring network in seismic areas

Version 1 : Received: 23 May 2023 / Approved: 23 May 2023 / Online: 23 May 2023 (10:56:15 CEST)

A peer-reviewed article of this Preprint also exists.

Toader, V.E.; Ionescu, C.; Moldovan, I.-A.; Marmureanu, A.; Brisan, N.-S.; Lıngvay, I.; Mihai, A. The Results and Developments of the Radon Monitoring Network in Seismic Areas. Atmosphere 2023, 14, 1061. Toader, V.E.; Ionescu, C.; Moldovan, I.-A.; Marmureanu, A.; Brisan, N.-S.; Lıngvay, I.; Mihai, A. The Results and Developments of the Radon Monitoring Network in Seismic Areas. Atmosphere 2023, 14, 1061.

Abstract

The analysis of the radon-seismicity relationship has been carried out so far in the Vrancea (Ro-mania) seismic zone, with monitoring stations positioned on tectonic faults. The article analyzes the evolution of radon under the conditions of the existence of deep and surface seismicity and the presence of mud volcanoes along with live fires caused by gases emitted from the soil. The monitoring area was extended to the Black Sea and the area of the Făgăraș Câmpulung fault, where a special radon detection system was set up, which was proposed for patenting. A case study is the effect of the earthquakes in Turkey (7.8 R and 7.5 R on 2023/02/06) on the seismically active areas in Romania in terms of gas emissions (radon, CO2). The main analysis methods on radon (we also included CO2) are applied to integrated time series and the use of anomaly detection algorithms. Data analysis shows that the effects of global warming introduce deviations in seasonal gas emissions compared to previous years. This makes it difficult to analyze the data and correlate them with seismicity. The main conclusions related to the development of a radon monitoring network and in general the emission of gases in seismic areas refer to the importance of the choice of equipment, the monitoring location and the installation method.

Keywords

radon and CO2 monitoring; anomaly detection; multidisciplinary monitoring; precursor phe-nomena; air ionization monitoring; OEF (Operational Earthquake Forecasting).

Subject

Environmental and Earth Sciences, Environmental Science

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