Multi-day radon signals with a radioactive decay limb—Occurrence and geophysical significance

Steinitz, G.; Martín, María Candelaria Afonso; Gazit-Yaari, N.; Quesada, María Luisa Calvache; Nuez, J. de la; Casillas, Ramón; Malik, U.; Begin, Ze’ev B.

doi:10.1016/j.apradiso.2005.10.004

Cited by 16 publications

(7 citation statements)

References 6 publications

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“…Leaving aside, for the moment, transient perturbations possibly associated with deformation but still not well understood (Trique et al, 1999;Steinitz et al, 2006), in most cases, the two main temporal variations are a large yearly variation (Dueñas et al, 1999;Muramatsu et al, 2002) and smaller transient variations associated with the variations of atmospheric pressure, especially for periods ranging from 1 h to about one week (Pohl-Rüling and Pohl, 1969;Clements and Wilkening, 1974;Schery et al, 1982). In addition, in some cases, tidal frequencies are also observed (Crockett et al, 2006b).…”

Section: Introductionmentioning

confidence: 93%

Seasonal variations of natural ventilation and radon-222 exhalation in a slightly rising dead-end tunnel

Perrier

Richon

Gautam

et al. 2007

Journal of Environmental Radioactivity

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Section: Introductionmentioning

confidence: 93%

Seasonal variations of natural ventilation and radon-222 exhalation in a slightly rising dead-end tunnel

Perrier

Richon

Gautam

et al. 2007

Journal of Environmental Radioactivity

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“…The producer given sensitivity of sensor alpha-H is 42.6 Bq/m 3 per 1 count/h and 51.9 Bq/m 3 per 1 count/h for sensor alpha-L. c) Gamma detector e A 2 00 Â 2 00 NaI detector (PM-11 detector, ROTEM Inc., Israel), recording gamma-ray impulses of energy above 50 keV. Utilization of gamma detector systems for monitoring radon was based on the detection of gamma radiation from the 214 Bi, and to a lesser extent those from the 214 Pb (Steinitz et al, 2006). Due to the short half lives of theradon daughters, equilibrium of theradon and its daughters is achieved after a short time (w25 min).…”

Section: Detectorsmentioning

confidence: 99%

Possible effect of solar tides on radon signals

Steinitz¹,

Piatibratova²,

Kotlarsky³

2011

Journal of Environmental Radioactivity

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“…Radon signals in geogas within rock systems in upper crustal levels have been intensely studied in Israel [25,30,32] and Tenerife [32,33]. Geophysical analysis of these relatively long time series measured with a high time resolution (within 1 h) demonstrates that Rn signals in air confined within rock units are characterized by systematic recurrence of signal patterns in the temporal, geological and geographical domains, at a depth of more than 100 m. The main types recognized are multi-year, annual radon (AR; periodic), MD and daily radon (DR; periodic) signals [14,15,25,34] as well as intense variation lasting several hours [16,17].…”

Section: Discussionmentioning

confidence: 99%

Influence of a component of solar irradiance on radon signals at 1 km depth, Gran Sasso, Italy

2013

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Exploratory monitoring of radon is conducted at one location in the deep underground Gran Sasso National Laboratory (LNGS). Measurements (15-min resolution) are performed over a time span of ca 600 days in the air of the surrounding calcareous country rock. Using both α - and γ -ray detectors, systematic and recurring radon signals are recorded. Two primary signal types are determined: (i) non-periodic multi-day (MD) signals lasting 2–10 days and (ii) daily radon (DR) signals—which are of a periodic nature exhibiting a primary 24-h cycle ( θ =0.48). The local ancillary environmental conditions (pressure, temperature) seem not to affect radon in air monitored at the site. Long-term patterns of daytime measurements are different from the pattern of night-time measurements indicating a day–night modulation of γ -radiation from radon in air. The phenomenology of the MD and DR signals is similar to situations encountered at other locations where radon is monitored with a high time resolution in geogas at upper crustal levels. In accordance with recent field and experimental results, it is suggested that a component of solar irradiance is affecting the radiation from radon in air, and this influence is further modulated by the diurnal rotation of the Earth. The occurrence of these radon signals in the 1 km deep low-radiation underground geological environment of LNGS provides new information on the time variation of the local radiation environment. The observations and results place the LNGS facility as a high-priority location for performing advanced investigations of these geophysical phenomena.

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Multi-day radon signals with a radioactive decay limb—Occurrence and geophysical significance

Cited by 16 publications

References 6 publications

Seasonal variations of natural ventilation and radon-222 exhalation in a slightly rising dead-end tunnel

Seasonal variations of natural ventilation and radon-222 exhalation in a slightly rising dead-end tunnel

Possible effect of solar tides on radon signals

Influence of a component of solar irradiance on radon signals at 1 km depth, Gran Sasso, Italy

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