Differentiation between the effect of temperature and pressure on radon within the subsurface geological media

Zafrir, Hovav; Barbosa, Susana; Malik, U.

doi:10.1016/j.radmeas.2012.11.019

Cited by 54 publications

(40 citation statements)

References 45 publications

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“…However, although radon sensitivity to pressure has been documented (e.g. [59][60][61][62]), a number of studies both in experimental and field settings concluded that atmospheric pressure does not influence radon variability (e.g. [63][64][65][66][67]).…”

Section: Challenges and Perspectivesmentioning

confidence: 99%

Radon applications in geosciences – Progress & perspectives

Barbosa

Donner

Steinitz

2015

Eur. Phys. J. Spec. Top.

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Abstract. During the last decades, the radioactive noble gas radon has found a variety of geoscientific applications, ranging from its utilization as a potential earthquake precursor and proxy of tectonic stress over its specific role in volcanic environments to a wide range of applications as a tracer in marine and hydrological settings. This topical issue summarizes the current state of research as exemplified by some original research articles covering the aforementioned as well as other closely related aspects and points to some important future directions of radon application in geosciences. This editorial provides a more detailed overview of the contents of this volume, a brief summary of the rationale underlying the diverse applications, and outlines some important perspectives.

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Section: Challenges and Perspectivesmentioning

confidence: 99%

Radon applications in geosciences – Progress & perspectives

Barbosa

Donner

Steinitz

2015

Eur. Phys. J. Spec. Top.

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“…Pores or micro-fissures in rocks are the tunnels through which radon is transported in the rock, and diffusion and seepage provide the main momentum for radon transport. The number, volume, and degree of openness and expansion of pores or micro-fissures are closely related to the geomechanical environment, such as underground water seepage fields, in-situ stress fields, ultrasonic vibration fields, low-vibration fields, and temperature fields [3][4][5]. However, the mechanisms of diffusion and seepage are influenced by internal and external factors, such as the pore structure, temperature and water content of the soil [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Experimental Laws for the Radon Exhalation of Similar Uranium Samples with Low-Frequency Vibrations

Cai

Lei

et al. 2018

Sustainability

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Abstract:It is the fact that there are lots of hazard incidents in underground uranium mines caused by radon but in-suit uranium samples were difficult to collect. Based on closed chamber method, three similar samples in different sealed ways were made in a laboratory with different material rations, namely uranium tailings, quartz sand, cement, iron powder and silicon powder to measure the radon concentrations with and without low-frequency vibrations, which was used by the experimental device for low-frequency vibration diffusion of radon. The results showed that the radon exhalation coming from the similar samples was influenced by the low frequency vibration; the results are presented as two-stage variations compared with the blank group. The radon exhalation increased with the rising vibration frequency when the frequency was 50 to 70 Hz, but fell slowly after reaching the peak radon exhalation rate. Analyses of the relations between the rock damage degree, changes in porosity and the occurrence of an inflection point in the radon exhalation rate in the samples found that they also increased when the frequency was between 0 to 80 in sample 3. The maximum porosity of the third samples was about 4.8% with a low-frequency vibration 60 Hz, while the maximum damage degree was about 0.07 at 50 Hz.

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“…During the past few decades, long‐term radon monitoring has been conducted within geological media such as shallow soil, country rock, alluvial deposits, ground water, and hot springs and has revealed the following results: (1) A typical cyclical daily signature in radon temporal variability [ Lehmann et al , ; Martín‐Luis et al , ; Schubert and Schulz , ; Alparone et al , ; Fujiyoshi et al , ; Sundal et al , ; Choubey et al , ]: (2) longer radon signals, of several days [ Steinitz et al , ; Richon et al , ; Barbosa et al , ; Eff‐Darwich et al , ; Inan et al , ; Nikolopoulos et al , ]; and (3) long‐term seasonal patterns [ Perrier et al , ; Ghosh et al , ; Barbosa et al , ; Choubey et al , ; Richon et al , ; Zafrir et al , ; Martin‐Luis et al , ].…”

Section: Introductionmentioning

confidence: 99%

“…Such a method was presented recently [ Zafrir et al , ] to differentiate between the impact of ambient temperature and pressure on radon transportation within subsurface porous media. The technique was based on simultaneous long‐term radon monitoring by alpha and gamma measurement.…”

Section: Introductionmentioning

confidence: 99%

Novel determination of radon‐222 velocity in deep subsurface rocks and the feasibility to using radon as an earthquake precursor

et al. 2016

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A novel technique utilizing simultaneous radon monitoring by gamma and alpha detectors to differentiate between the radon climatic driving forces and others has been improved and used for deep subsurface investigation. Detailed long‐term monitoring served as a proxy for studying radon movement within the shallow and deep subsurface, as well as for analyzing the effect of various parameters of the radon transport pattern. The main achievements of the investigation are (a) determination, for the first time, of the radon movement velocity within rock layers at depths of several tens of meters, namely, 25 m/h on average; (b) distinguishing between the diurnal periodical effect of the ambient temperature and the semidiurnal effect of the ambient pressure on the radon temporal spectrum; and (c) identification of a radon random preseismic anomaly preceding the Nuweiba, M 5.5 earthquake of 27 June 2015 that occurred within Dead Sea Fault Zone.

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Differentiation between the effect of temperature and pressure on radon within the subsurface geological media

Cited by 54 publications

References 45 publications

Radon applications in geosciences – Progress & perspectives

Radon applications in geosciences – Progress & perspectives

Laboratory Experimental Laws for the Radon Exhalation of Similar Uranium Samples with Low-Frequency Vibrations

Novel determination of radon‐222 velocity in deep subsurface rocks and the feasibility to using radon as an earthquake precursor

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