Results 31 to 40 of about 1,326 (179)

Assessing the Worth of Noble Gas Tracer Concentrations in Alluvial River‐Aquifer Systems Using Data Space Inversion

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract Alluvial systems are dynamic, structurally complex environments. Groundwater that is extracted from these systems is widely used for domestic consumption. Numerical models play an important role in the management of this extraction. To provide support for decision‐making, models must assimilate data that inform the spatial and temporal ...
Hugo Delottier, Morgan Peel, John Doherty, Oliver S. Schilling, Philip Brunner   +4 more
wiley   +1 more source

Radon‐222 as an Effective Tracer to Distinguish Groundwater Circulation Patterns in the Deep Fault‐Controlled Geothermal System

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Groundwater flow regulated by deep faults remains challenging to trace due to structural complexity. This study applies the noble gas tracer 222Rn combined with hydrochemistry and stable isotopes (δ2H, δ18O) to distinguish circulation patterns of geothermal springs along a major fault in the Tibetan Plateau.
Xiaoyan Shi, Xingxing Kuang, Meizhuang Zhu, Linfeng Fan, Xinkang Wang, Gexi Zheng, Yinlei Hao, Chunmiao Zheng   +7 more
wiley   +1 more source

Blue carbon storage and environmental influences in mangroves, Puerto Rico

Soil Science Society of America Journal, Volume 90, Issue 3, May/June 2026.
Abstract Mangrove ecosystems are important coastal carbon sinks, with soil carbon storage strongly influenced by site‐specific hydrological, sedimentary, and climatic conditions. This study quantified soil carbon stocks in two mangrove systems in Puerto Rico—La Parguera and Laguna Grande—and evaluated the relative influence of hydrology, sediment ...
Jahnelle Howe, Peter M. Groffman, William J. Hernández, Jeffery Pessutti, Shakila Merchant   +4 more
wiley   +1 more source

222Rn calibrated mercury fluxes from terrestrial surfaces of southern Africa derived from observations at Cape Point, South Africa

E3S Web of Conferences, 2013
Gaseous elemental mercury (GEM) and 222Rn, a radioactive gas of primarily terrestrial origin with a half-life of 3.8 days, have been measured simultaneously at Cape Point, South Africa, since March 2007. Between March 2007 and December 2009 altogether 59
Slemr F., Brunke E.-G., Whittlestone S., Zahorowski W., Ebinghaus R., Kock H. H., Labuschagne C.   +6 more
doaj   +1 more source

Spatial Variability in Trace Organic Compound Reactivity During Urban River Infiltration Into an Alluvial Aquifer

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Trace organic compounds (TrOCs) in lotic systems pose risks for ecosystem and human health. TrOCs can enter groundwater along losing river sections, yet little is known about the spatial extent of infiltration zones and the biogeochemical factors controlling the spatial variability of TrOC reactivity and removal, particularly along river‐to ...
Jonas L. Schaper, Olaf A. Cirpka, Malte Posselt, Joerg Lewandowski, Karin Meinikmann, Anke Putschew, Christiane Zarfl   +6 more
wiley   +1 more source

Measurement of Radium and Radon Exhalation Rate in Marble Samples used in Al-Bayda City Market-Libya

مجلة المختار للعلوم, 2022
The aim of the present study is to measure the activity concentrations of  226Ra, 222Rn, the mass exhalation rate of 222Rn, and the annual effective dose of radon in marble samples collected from Al-Bayda  city local market –Libya. Samples were measured
Jemila M. Ali, Suhayla A. Ibrahim
doaj   +1 more source

Cenozoic Time Constraints on the Evolution of a Gleysol‐Ferralsol‐Podzol Toposequence, Northwest Amazon Basin, Brazil

European Journal of Soil Science, Volume 77, Issue 3, May–June 2026.
ABSTRACT Deciphering the time milestones of clay formation is crucial for modeling the evolution of major geological systems near the Earth's surface. In the present study, kaolinite samples collected along four vertical profiles within a Gleysol‐Ferralsol‐Podzol soil toposequence near São Gabriel da Cachoeira, NW Amazon Basin (Brazil) are dated using ...
Célia Regina Montes, Thierry Allard, Madeleine Sélo, Yves Lucas, Chloé Fourdrin, Öykü Ataytür, Débora Ayumi Ishida, Etienne Balan, Adolpho José Melfi   +8 more
wiley   +1 more source

Environmental isotopes (δ18O–δ2H, 222Rn) and electrical conductivity in backtracking sources of urban pipe water, monitoring the stability of water quality and estimating pipe water residence time

Frontiers in Water, 2023
This study demonstrates the use of environmental tracers (Water isotopes-δ18O–δ2H, Radon-222Rn, and Electrical Conductivity-EC) as complementary tools for backtracking the water source, estimating pipe water residence time, and monitoring the instability
Seifu Kebede, Kidist Hailu, Abdulhafiz Siraj, Behailu Birhanu   +3 more
doaj   +1 more source

Detecting Thunderstorm‐Related High‐Energy Phenomena in Weak Signals

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Gamma‐ray glows (GRGs) are high‐energy events associated with thunderstorms, characterized by an enhancement of the high‐energy background radiation lasting from a few seconds to several minutes. They are typically detected near their sources by balloons, aircraft, mountain‐based observatories, or at sea level in regions where thunderstorms ...
Y. Hazem, S. Celestin, F. Trompier, Y. Hobara   +3 more
wiley   +1 more source

Insights on Climate-Driven Fluctuations of Cave 222Rn and CO2 Concentrations Using Statistical and Wavelet Analyses

Geofluids, 2020
Understanding the fluctuations in cave air concentrations and their climatic control is substantial not only to preserve the quality of indoor atmospheres but also to avoid the risk related to the presence of hazardous substances.
Concepcion Pla, Angel Fernandez-Cortes, Soledad Cuezva, Juan Jose Galiana-Merino, Juan Carlos Cañaveras, Sergio Sanchez-Moral, David Benavente   +6 more
doaj   +1 more source