Continuous monitoring of 222Rn and its progeny at a remote station for seismic hazard surveillance

Das, Nishith Kumar; Choudhury, Hirok; Bhandari, Rakesh; Ghose, D.; Sen, P.; Sinha, Bikash K.

doi:10.1016/j.radmeas.2006.03.003

Cited by 25 publications

(17 citation statements)

References 10 publications

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“…A significant radon monitoring study was done by Das and group at the Agnikunda thermal spring, Bakreswar during (Das et al, 2006. The electronic radon monitor SARAD DOSEman was used to determine the radon and progeny concentration.…”

Section: Indiamentioning

confidence: 99%

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Anomalous radon emission as precursor of earthquake

Ghosh

Deb

Sengupta

2009

Journal of Applied Geophysics

192

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Section: Indiamentioning

confidence: 99%

“…7), Scintillation Counter (China 1975(China , 1977Einarsson et al, 2005Einarsson et al, , 2008; Kuo et al, 2006, collector chamber (Erees et al, 2007 (Fig. 8), Radon Detector (SARAD) (Das et al, 2006;Fu et al, 2008), RAD-7 detector (Crockett et al, 2006) are important among them.…”

Section: Modern Devicesmentioning

confidence: 99%

Anomalous radon emission as precursor of earthquake

Ghosh

Deb

Sengupta

2009

Journal of Applied Geophysics

192

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“…In N-W Himalaya, Walia et al (2003Walia et al ( , 2005b have found a strong relationship between radon anomalies with seismic parameters. Das et al (2006) observed a distinct increase in radon-222 concentration in Bakreswar thermal spring gas prior to the great Indonesia tsunami in 2004 generated due to a 9.1 magnitude earthquake. Ramola et al (2008) reported their earthquake precursor study associating soil as well as groundwater radon measurement.…”

Section: Efficacy Of Radon-222 As Earthquake Precursormentioning

confidence: 96%

“…However, the origin and mechanism of the radon anomalies and their relationship to earthquakes are not fully understood yet. Number of attempts have been made worldwide to establish radon anomalies in soil (King 1980;Mogro-Campero et al 1980;Reddy et al 2004;Miklavčić et al 2008;Ghosh et al 2009), ground water (Hauksson 1981 andreferences therein, Virk andSingh 1993), hydrothermal system (Das et al 2006;Chaudhuri et al 2011) and mud-volcano (Chaudhuri et al 2012), as precursors for earthquakes. The anomalous emission of radon-222 correlated with geophysical events may be considered as having two possible origins; either it is produced in-depth origin, or, once produced locally, it is transported by other terrestrial fluid motion triggered by geodynamical events.…”

Section: Efficacy Of Radon-222 As Earthquake Precursormentioning

confidence: 99%

Anomalous soil radon fluctuations – signal of earthquakes in Nepal and eastern India regions

2016

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The present paper deals with pre-seismic soil radon-222 recorded at two different locations 200 m apart, at Jadavpur University main campus, Kolkata, India. Solid state nuclear track detector method is used for detection of the radioactive radon gas. Two simultaneous 4-month long time series data have been analysed. Anomalous fluctuations in the radon datasets have been observed prior to recent earthquakes in Nepal and eastern India during the monitoring period, mainly, the massive 25th April 7.8 M Nepal earthquake. The simultaneous measurements assist in identifying seismogenic radon precursor efficiently.

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“…Radon gas emitted from the earth is being used as an earthquake precursor; many recent studies have shown that changes in radon concentration prior to major earthquakes may occur [5,6,7,8]. Radon is produced by decay product of uranium that is present in rock and soil minerals and some amount of radon may accumulate in the cracks present in the earths crust.…”

Section: Introductionmentioning

confidence: 99%

Tukey Control Chart for Radon Monitoring in Relation to the Seismic Activity

Mehmood

2021

Preprint

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Earthquakes are among the most destructive natural disasters, which cause damage on a huge scale not only to life but to property also. Radon is one of the precursory phenomena that exist in connection to the occurrence of earthquakes and may have potential in forecasting these hazards. The data set in this study contains the observations of radon from August 01, 2014, to January 31, 2015 collected in Sobra city, northern Pakistan. Weibull, Gamma, Log-Normal, Log-Logistic, and Pareto probability distribution were fitted over the radon on its original scale and a log scale. Log-logistic best fits the radon on both scales. Log-logistic based Tukey control charts suggest a central limit of 2465.459 Bq/m3 and upper control limit of 12704.080 Bq/m3 on the original radon data, while they suggest a central limit of 7.759, upper control limit of 11.080 and lower control limit of 4.524 on the log scale. The Tukey control charts reveal several anomalies that were compared with earthquake occurrence. There are five earthquakes that occurred during the same period as the radon monitoring program, having magnitude ranges between 4.9 5.5, with the ratio between strain radius and distance to the epicenter greater than or equal to 1. Among several radon anomalies exceeding the upper control limit, the five are identified as earthquake precursors. The results of this study demonstrate that for earthquakes, seismic events show a correlation with increasing concentrations of radon gas before their occurrence.

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Continuous monitoring of 222Rn and its progeny at a remote station for seismic hazard surveillance

Cited by 25 publications

References 10 publications

Anomalous radon emission as precursor of earthquake

Anomalous radon emission as precursor of earthquake

Anomalous soil radon fluctuations – signal of earthquakes in Nepal and eastern India regions

Tukey Control Chart for Radon Monitoring in Relation to the Seismic Activity

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