Radon anomalies on three kinds of faults in California

King, Chi‐Yu; Zhang, Wei; King, Bi‐Shia

doi:10.1007/bf00876238

Cited by 56 publications

(27 citation statements)

References 7 publications

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“…The worldwide distribution of springs in which HCO 3 concentration exceeds 1000 mg/l generally coincided with major seismic belts (King et al, 1993). In the margins of the region 222 Rn and HCO 3 exhibit a positive correlation, where both reach the highest values (8.2 kBqm -3 and 600 mg/l respectively).…”

Section: Resultsmentioning

confidence: 96%

“…Anomalous high radon concentrations has been measured along many active faults worldwide (King 1986(King , 1990(King , 1993Nishimura & Katsura, 1990;Kresl et al, 1993;Barton et al, 1995;Singh et al, 1999;Mancini et al 2000;Gudmundsson et al, 2001;Ioannides et al, 2003;Moussa et al, 2003;Pizzino et al, 2004a, b;Richon et al, 2007). The Helike and Aigion faults are hosting strong and moderate earthquakes, respectively characterized by high slip rate (Koukouvelas & Doutsos, 1996, Tselentis et al 1996.…”

Section: Resultsmentioning

confidence: 99%

“…Gas surveys are an effective method for locating unmapped faults provided that active faults are enriched in terrestrial gases due to the fact that they constitute significant "leaks" for the Earth's outgassing process (King, 1990(King, , 1993.…”

Section: Introductionmentioning

confidence: 99%

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Radon Changes Along Main Faults in the Broader Aigion Region, Nw Peloponnese

et al. 2017

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

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Radon Changes Along Main Faults in the Broader Aigion Region, Nw Peloponnese

et al. 2017

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“…First one -the deterministic approach which studies the temporal and spatial distribution behavior of some precursor, for example, the radon emanation (Allegri et al, 1983;King et al, 1993). The other one -the statistical patterns processing on the purpose to find some regularity in the behavior of statistical characteristics of the given parameter.…”

Section: Introductionmentioning

confidence: 99%

Correlation analysis technique revealing ionospheric precursors of earthquakes

Пулинец

Gaivoronska

Contreras

et al. 2004

Nat. Hazards Earth Syst. Sci.

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Abstract. In this paper we focus on the variability of electron concentration in the ionosphere measured by ground based ionosondes and GPS receivers around the time of strong earthquakes. It has been detected and statistically proven that several days before the seismic shock the level of this variability increases at the station closest to the epicenter, a fact which can be regarded as precursory phenomenon. More precisely the localness of this specific kind of ionospheric variability is used for the correlation analysis of data of several observation points. The similarity of geographical location of the observation points leads to the similarity of ionospheric variations registered at these sites during both quiet and disturbed geomagnetic conditions, except in the case of those located at the seismoactive zone. As a rule, the local anomalies in the F2 layer and TEC accompanying the preparation of strong earthquakes show themselves in the breaking of the mutual correlation of the critical frequencies f o F 2 or TEC between stations situated in and outside the seismic zone. The precursory phenomenon appears 1 to 7 days before the time of the seismic shock.

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“…In particular, scientists in Japan, China, Taiwan, U.S.A., the former USSR, Italy, France, Germany, Austria, Greece and India, have addressed this matter in relation to seismo-tectonic problems (SHAPIRO et al, 1980;HAUKSSON, 1981;MENDENHALL et al, 1981;THOMAS, 1988;KING, 1986KING, , 1993WAKITA et al, 1989a,b;IGARASHI et al, 1993;IGARASHI and WAKITA, 1995).…”

Section: O6er6iew Of the E6olution Of Radon Continuous Monitoring De6mentioning

confidence: 99%

Groundwater, Radon Continuous Monitoring System ( α -scintillation Counting) for Natural Hazard Surveillance

Galli

Mancini

Quattrocchi

2000

Pure and Applied Geophysics

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A ''quasi continuous mode'' monitoring system to measure the radon concentration within a natural environment (mainly groundwater), was designed, assembled and tested, under collaboration between DINCE and ING, partly within the framework of two EC funded programs.The radon monitor consists of a customised discrete automatic sampler which produces a gas flux circuit, and an economical h-scintillation cell, coupled with a reliable electronics-photomultiplier assemblage. A convenient calibration system together with a temporised control system have been set up. The overall ''mean efficiency'' of the system was calculated to be 7.7990.13 counts per minute (cpm) for each Bq/L.Taking into consideration the present and future requirements of a geochemical surveillance network to assess natural hazards, the prototype design evolved from the study of existing systems devoted to monitor radon concentration levels, which are critically reviewed within this paper.In response to the main prerequisite of a remote station: maximum remote sensor versatility preserving shared software and hardware for the network as a whole, this radon monitoring system was conceived as part of a multi-parametric Geochemical Monitoring System (GMS II) prototype, designed and realised as a test-stand for sensors (chemical, hydrological, geophysical, organic chemistry devoted, etc.) in continuous evolution throughout the international market.

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Radon anomalies on three kinds of faults in California

Cited by 56 publications

References 7 publications

Radon Changes Along Main Faults in the Broader Aigion Region, Nw Peloponnese

Radon Changes Along Main Faults in the Broader Aigion Region, Nw Peloponnese

Correlation analysis technique revealing ionospheric precursors of earthquakes

Groundwater, Radon Continuous Monitoring System ( α -scintillation Counting) for Natural Hazard Surveillance

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