Decadal radon cycles in a hot spring
WebJan 1, 2024 · Radon ( 222 Rn) has a half-life of approximately 3.8 days and is continuously occurring within soil or rock fissures in nature; thus, making it suitable for studying geological movement processes that occur from hours to days. Many studies documented that groundwater radon concentrations are sensitive to stress/strain in crustal [ 8, 9 ]. WebSep 21, 2024 · A high-fidelity record covering nearly 40 years of water-dissolved radon from the hot spring site of BangLazhang (BLZ), Southwestern China is presented to …
Decadal radon cycles in a hot spring
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WebA bi‐logarithmic plot of the discharge temperature versus flow rate of 3,686 hot springs in Japan shows a broad but positive correlation. This correlation is semiquantitatively explained as buoyancy‐driven Darcy flow using a one‐dimensional advection flow equation for hot water in a porous media assuming a 1 km reservoir depth and 104 m2 discharge area for … WebMay 29, 2024 · Radon (222 Rn) is a radioactive gas, which originates everywhere in rocks of Earth's crust through a process of natural decay of other radioactive elements. The …
WebJul 26, 2024 · De Francesco et al. ( 2010) revealed the annual cycle of radon in shallow groundwater, which was closely related to rainfall and groundwater level. Yan et al. ( … WebDecadal radon cycles in a hot spring. A high-fidelity record covering nearly 40 years of water-dissolved radon from the hot spring site of BangLazhang (BLZ), Southwestern China is presented to study multi-year periodicities of radon.
WebSep 21, 2024 · Europe PMC is an archive of life sciences journal literature. WebFirst, a pilot hole is drilled by the fine steel in the soil, and the radon gas sampler is inserted into the drilled hole to a depth of more than 0.7 m. Then, the air pump is lifted to the high position, and the valve is closed to isolate the gas in the cylinder desiccant from the outside. The field radon gas is then captured in the reactor.
WebJan 10, 1993 · A two‐dimensional finite element code was used to investigate the effect of changes in surface air pressure on radon flux from soil with parallel, partially penetrating cracks. A sensitivity analys...
WebWe tentatively conclude that radon variations are mainly explained by variations in water temperature and spring discharge, which are modified and modulated by earthquakes … soltech stoorWebA high-fidelity record covering nearly 40 years of water-dissolved radon from the hot spring site of BangLazhang (BLZ), Southwestern China is presented to study multi-year periodicities of radon. Ancillary observational data, i.e., water temperature, spring discharge rate, barometric pressure, combined with regional rainfall, galactic cosmic rays … soltech security systemsWebWe tentatively conclude that radon variations are mainly explained by variations in water temperature and spring discharge, which are modified and modulated by earthquakes … soltech south africaWebAutor: Yan, Rui et al.; Genre: Datenpublikation; Final veröffentlicht: 2024; Keywords: China Earthquake Networks Center, 100045 Beijing, China; Titel: 40-year record ... soltech security fairfieldThe BLZ hot spring monitoring site is maintained and operated by the China Earthquake Administration of Yunnan Province. Water from the spring is sampled once daily and measurements of radon have been performed routinely in a laboratory since 1976 April 6. The sample time is designated to occur at 8 … See more The BangLazhang (BLZ) hot spring (98.68 °E, 24.65 °N, 1,280 m above sea level) is located in Yunnan Province, SW China, within the hydrothermal zone of Longling city (Fig. 1). The climate is of a subtropical monsoon-type with a … See more Geology at the monitoring site is characterized by Caledonian granite/gneiss and Cambrian sandstones. The outcropping bedrocks in the hydrothermal area are comprised of Middle Devonian … See more soltech systems limitedWebMar 9, 2024 · This chaotic regime of the time series is realized through diurnal, seasonal, multiyear, and decadal Rn cycles along with key influencing parameters [ 14, 53, 54 ]. Therefore, the Rn time series is subjected to fractal estimates to determine the degree of chaotic behaviour of Rn and intrinsic long-memory correlations, if any [ 55 ]. soltech us corpWebA high-fidelity record covering nearly 40 years of water-dissolved radon from the hot spring site of BangLazhang (BLZ), Southwestern China is presented to study multi-year periodicities of radon. ... The results show that the long-period radon concentration is characterized by a quasi-decadal (8-11 years) cycle, matching well with the ... soltech university of pretoria