Abstract
Earthquakes are a major natural hazard in numerous parts of the world, and research into precursor signals of seismic activity has mobilised the scientific community for many years. Since earthquakes are a physical phenomenon, attempts for predicting these events in terms of date, magnitude and epicenter have traditionally called upon geophysical methods (seismology, deformation of the ground, electrical methods, etc.). In order to understand more the underlying processes involved, it is necessary to undertake extended periods of monitoring of individual gases at one or more locations, and statistically analyze the compositional data in relation to the observed seismic activity and the effects of extraneous variables. These geophysical anomalies indicate that the faults are zones of weakness acting as channels for deep degassing processes. Numerous successes in forecasting were subsequently recorded through the study of radon emanation in the soils and ground waters of seismic zones. Research into earthquake precursor signals requires continuous instrument surveillance of the selected geophysical parameters.
The final objective of this research work is to be able to estimate and prognoses a seismic event. Throughout a one-year period of our research work, we have collected sufficient soil-gas data over long periods at one or more recognized seismically active localities in Greece, Russia, Armenia, and Albania as a preliminary work to establishing a capability for earthquake prediction based on variations in soil gas composition. With the already studied results we are able to demonstrate the viability of the technique, followed by establishment of permanent monitoring stations. The information obtained from these surveys will be compared to data from on-going parallel studies in Greece where all data will be collected via satellite in real-time. Emphasis will be placed on the development of methodology and software suitable for the extended monitoring of gas composition on-site, supported by laboratory determinations to validate the field data where necessary. A number of data loggers (i.e. transducers/detectors) have already been installed at specific selected locations (base stations). Each base station includes a data-logger with which a number of geological parameters are detected. The data are transmitted to a modem, which is directly attached to the INMARSAT global satellite communication system. With the above mentioned multi-disciplinary approach we intend to establish a permanent central data acquisition-broadcasting system with a continuous monitoring of radon, water table level, groundwater temperature, atmospheric temperature and pressure, carbon dioxide, helium, nitrogen, etc.
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References
Borchielinni, S., Bernat, M., Campredon, R. (1991) Factors Controlling Radon Emissions from Sources in Regions of Accentuated Relief - The Influence of Seismicity Maritime Alps, France. Earth & Planetary Science Letters, 107/1, 217–229.
Chambaudet, A., Cieur, M., Hussonois, M., Klein, D. (1991) A Portable system for the Continuous Measurement of Rn-222 in Hostile Geophysical Environments. Nuclear Instruments & Methods In Physics Research Section B-Beam Interactions With Materials And Atoms, 61,/2, 244–250.
Cherouati, De, Chalal, Mt., Djeffal, S. (1991) Investigation ot Radon Emanation along a Seismic Fault. Nuclear Tracks and Radiation Measurements, 19/1–4, 299–303.
Finkelstein, M., Brenner, S., Eppelbaum, L. & Neeman, E. (1998) Ldentlrication of Anomalous Radon Concentrations due to Geodynamic Processes by Elimination of Rn Variations caused by other Factors. Geophysical Journal International, 133/2, 407–412.
Friedmann, H., Aric, K., Gutdeutsch, R., King, C., Altay, C. & Sav, H. (1988) Radon Measurements for Earthquake Prediction along the North Anatolian Fault Zone - A Progress Report. Tectonophysics, 152/3–4, 209–214.
Fujinawa, Y. (1992) A Note on a Relation Between the Synthetic and Individual Probabilities in the Quantitative Earthquake Prediction. Journal of Physics of the Earth, 40/3, 479–486.
Khan, H. (1991) Radon - A Friend or a Foe. Nuclear Tracks and Radiation Measurements, 19, No.1–4, 353–362.
King, C. (1981) Do Radon Anomalies Predict Earthquakes? Nature, 293, No 5830, 262.
King, C. (1985) Radon Monitoring For Earthquake Prediction in China. EarthquakePrediction Research, 3, No.1, 47–68.
Kleis, T., Enge, W., Woith, H. (1991) Plastic Detectors for Radon Monitoring in Earthquake Prediction. Nuclear Tracks and Radiation Measurements, 19, No.1–4, 365–366.
Kleis, T., Enge, W., Woith, H. (1991) Radon monitoring witn Piastic uetectors in Earthquake Prediction. Nuclear Tracks and Radiation Measurements, 20, No.3, 495–503.
Lenzen, M., Neugebauer, H. (1997) An Automatic Radon Sensor for Borehole Measurements. Review of Scientific Instruments, 68, No.7, 2898–2903.
Nishizawa, S., Igarashi, G., Sano, Y., Shoto, E., Tasaka, S., Sasaki, Y. (1998) Radon, Cl- and SO4 Anomalies in Hot Spring Water Associated with the (1995) Earthquake Swarm off the East Coast of The Izu Peninsula, Central Japan. Applied Geochemistry, 13, No.1, 89–94.
Qureshi, A., Khan, H., Jafri, E., Tufail, M. & Matiullah S. (1991) Radon Signals tor Geological Explorations. Nuclear Tracks and Radiation Measurements, 19, No.1–4, 383–384.
Theodorsson, P. (1996) A New Method for Automatic-Measurement of low-level Radon in Water. Applied Radiation and Isotopes, 47, No.9–10, 855–859.
Virk, H. (1993) Radon and Earthquake Prediction in India - Present Status. Nuclear Tracks and Radiation Measurements, 22, No.1–4, 483–494.
Virk, H. & Singh, B. (1994) Correlation of Radon Anomalies with Earthquakes in the Kangra Valley. Nuclear Geophysics, 6, No.2, 293–300.
Wakita, H. (1996) Geochemical Challenge to Earthquake Prediction. Proceedings of the National Academy of Sciences of the United States of America, 93, No.9, 3781–3786.
Wyss, M. (1989) Second Round of Evaluations of Proposed Earthquake Precursors. Pure and Applied Geophysics, 149, No.1, 3–16.
Yasuoka, Y., Shinogi, M. (1997) Anomaly in Atmospheric Radon Concentration: A Possible Precursor of the (1995) Kobe, Japan, Earthquake. Health Physics, 72, No.5, 759–761.
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Lagios, E. et al. (2000). Tectonic Early Warning System Through Real-Time Radon (Rn) Monitoring: Preliminary Results of a Geophysical Method for Forecasting Earthquakes. In: Balassanian, S., Cisternas, A., Melkumyan, M. (eds) Earthquake Hazard and Seismic Risk Reduction. Advances in Natural and Technological Hazards Research, vol 12. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9544-5_25
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DOI: https://doi.org/10.1007/978-94-015-9544-5_25
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