Results 61 to 70 of about 712 (184)

Dual 222Rn Models for Tracing Groundwater–Lake Water Exchange in a Flow‐Through Lake

Water Resources Research, Volume 61, Issue 3, March 2025.
Abstract Groundwater–lake water exchange in flow‐through lakes which includes both groundwater discharge into the lake and lake water seepage into the aquifer, is crucial for sustaining lake wetland ecosystems; however, these two processes are rarely addressed simultaneously by tracer methods.
Yue Hu, Peng Sun, Fu Liao, Yirong Liang, Bai Gao, Zhi Rao, Xiaodong Chu, Yuanyuan Liu, Yang Yang, Yongzhen Fu, Guangcai Wang   +10 more
wiley   +1 more source

Sandy Subterranean Estuaries Minimize Groundwater Nitrogen Pollution Impacts on Coastal Waters

Geophysical Research Letters, Volume 52, Issue 3, 16 February 2025.
Abstract Widespread anthropogenic activities pollute groundwater that eventually seeps out to the coastal ocean. Here, we resolve nutrient transformations and fluxes in 11 sandy subterranean estuaries (STEs) with contrasting nutrient sources and development trajectories.
Xiaogang Chen, Isaac R. Santos, Jinzhou Du, Bochao Xu, Joseph J. Tamborski, Ding He, Neven Cukrov, Christian J. Sanders, Jianan Liu, Peiyuan Zhu, Yan Zhang, Ling Li   +11 more
wiley   +1 more source

Submarine groundwater discharge as a major nutrient source in river‐fed vs. tidally dominated estuaries

Limnology and Oceanography, Volume 70, Issue 2, Page 426-442, February 2025.
Abstract The tidal tributaries of the lower Chesapeake Bay experience seasonally recurring harmful algal blooms and the significance of submarine groundwater discharge (SGD) as a nutrient vector is largely unknown. Here, we determined seasonal SGD nutrient loads in two tributaries with contrasting hydrodynamic conditions, river‐fed (York River) vs ...
Stephanie J. Wilson, Joseph J. Tamborski, Bongkeun Song, Peter Bernhardt, Margaret R. Mulholland   +4 more
wiley   +1 more source

Control of Groundwater‐Lake Interaction Zone Structure on Spatial Variability of Lacustrine Groundwater Discharge in Oxbow Lake

Water Resources Research, Volume 61, Issue 1, January 2025.
Abstract Lacustrine groundwater discharge (LGD) is an important water and nutrient source for lakes. Despite its importance, high‐resolution quantifying the spatial variability of LGD remains challenging. Particularly, little studies have explored the impact of the interaction zone structure between lakes and aquifers on this variability. Present study
Xiaoliang Sun, Yao Du, Jiawen Xu, Hao Tian, Yamin Deng, Yiqun Gan, Yanxin Wang   +6 more
wiley   +1 more source

Survey of Radon and Thoron Levels in the Air of Urban and Rural Dwellings in Yazd Province: Perspective of Stone Type and Construction Materials

Indoor Air, Volume 2025, Issue 1, 2025.
The present study was aimed at assessing the concentrations of Rn and Th gases in the indoor air of residential homes in urban and rural areas near the active faults in Yazd province. Sampling and measurements were performed for 6 months (autumn and winter) in 2024 using the RAD7 device.
Samira Jafari Nodushan, Mohammad Hassan Ehrampoush, Fahimeh Teimouri, Reyhane Sefidkar, Hamid Mehrnahad, Rasha S. Ahmed   +5 more
wiley   +1 more source

Spatio‐Temporal Variability of Hyporheic Exchange Processes Across a Stream Network

Hydrological Processes, Volume 38, Issue 12, December 2024.
Hyporheic exchange processes (HEP) scale across stream networks, but only limited knowledge exists about the temporal variability of HEP over the hydrological year and across the stream network. Combining field‐based measurements with numerical modelling, our findings reveal that HEP exhibit high temporal variability throughout the hydrological year in
Clarissa Glaser, Benjamin S. Gilfedder, Christiane Zarfl   +2 more
wiley   +1 more source

Comparative Study Between Virgin and Agriculture Soil Radon Activity Concentration and Their Radiological Risks

Polytechnic Journal
The present study is to compare the radon activity concentration in agricultural and virgin soils from various locations along the Little Zab River (LZR) in the Iraqi Kurdistan region.
Hiwa Hamad Azeez, Jahfer Majeed Smail, Hemn Muhammad Salh, Habeeb Hanna Mansour, Saddon Taha Ahmad, Hawbash Hamadamin Karim   +5 more
doaj   +1 more source

Monitoring of radon concentration for different building types in Covenant University, Nigeria

Cogent Engineering, 2020
Radon monitoring is essential in determining the actual level of exposure in buildings. Of all the reviewed works on indoor radon level, little to none was done on comparative radon concentration study of different building structures in the study area ...
M. R. Usikalu, C. A. Onumejor, J. A. Achuka, A. Akinpelu, M. Omeje, T. A. Adagunodo   +5 more
doaj   +1 more source

Tracing Groundwater‐Surface Water Interactions in a Volcanic Maar Lake Using Stable Isotopes and 222Rn

Journal of Geophysical Research: Biogeosciences, Volume 129, Issue 12, December 2024.
Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These interactions are important in controlling lake water residence time, aqueous biogeochemistry, and water availability for downstream communities and ecosystems. To better comprehend the complexity of spatio‐
Germain Esquivel‐Hernández, Emanuel Montealegre‐Viales, Rolando Sánchez‐Gutiérrez, Mario Villalobos‐Forbes, Roy Pérez‐Salazar, Ricardo Sánchez‐Murillo, Leonardo Mena‐Rivera, Christian Birkel, Lucía Ortega   +8 more
wiley   +1 more source

222Rn and 220Rn levels of Mansa and Muktsar district of Punjab, India

Frontiers in Environmental Science, 2015
In this study 222Rn (Radon) measurement were performed in water and soil gas and also both 222Rn and 220Rn concentrations were determined in air of Mansa and Muktsar district of Punjab, India.
Rohit eMehra, Pargin eBangotra, Kirandeep eKaur   +2 more
doaj   +1 more source