Results 51 to 60 of about 12,532 (187)

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

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

Overlooked seasonal groundwater nutrient fluxes rival anthropogenic point sources across a variable land‐use tidal river

Limnology and Oceanography, Volume 70, Issue 12, Page 3815-3831, December 2025.
Abstract Understanding groundwater–surface water connectivity in tidal freshwater zones is essential for managing ecosystems within the riverine–estuarine continuum. Groundwater discharge is a key source of dissolved nutrient loads that can lead to eutrophication, deoxygenation, and other ecosystem imbalances in coastal environments.
James A. Padilla‐Montalvo, Douglas R. Tait, Michael J. Reading, Benjamin T. Stewart, Angus Ferguson, Iremar Fernandez‐Vazquez, James Z. Sippo, Shivanesh Rao, Mitch Call, Christopher Ralph, Josh Guyat, Jenny Rogers, Merran Griffith, Damien T. Maher   +13 more
wiley   +1 more source

Lunar Outgassing, Transient Phenomena and The Return to The Moon, I: Existing Data

, 2007
Herein the transient lunar phenomena (TLP) report database is subjected to a discriminating statistical filter robust against sites of spurious reports, and produces a restricted sample that may be largely reliable.
Arlin P. S. Crotts, Arvidson R., Basilevsky A. T., Biggar G. M., Birt W. R., Bulow R. C., Burlingame A. L., Cameron W. S., Cameron W. S., Classen J., Criswell D. R., Criswell D. R., Crotts A. P. S., Ebel D. S., Elger T. G., Freeman J. W., Golub L., Haas W. H., Hanna J. C., Hodges R. R., Jr., Hodges R. R., Jr., Hodges R. R., Jr., Hodges R. R., Jr., Hoffman J. H., Konig B., McCubbin F. M., Middlehurst B., Nakamura Y., Nakamura Y., Pickering W. H., Runcorn S. K., Saal A. E., Sato M., Schultz P. H., Schultz P. H., Schultz P. H., Silver L. T., Strain P. L., Vondrak R. R., Whitford-Stark J. L., Whitley H. M., Wood R. W.   +41 more
core   +1 more source

Insights Into the Comprehensive Carbon Cycle in a Mangrove Ecosystem: A Case Study for Understanding Carbon Burial, Outgassing, and Outwelling in a Subtropical Island

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 12, December 2025.
Abstract A significant quantity of soil organic carbon (SOC) is buried in mangrove ecosystems. However, recent research has revealed that substantial amounts of carbon are exported to the atmosphere as CO2 or to the ocean as dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), and particulate organic carbon (POC).
Wataru Nakamura, Kenta Watanabe, Toshimi Nakajima, Ryo Sugimoto, Toshihiro Miyajima, Tatsuki Tokoro, Phyo Thet Naing, Tomohiro Kuwae, Jun Sasaki   +8 more
wiley   +1 more source

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

Water Resources Research
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 ...
Yue Hu, Peng Sun, Fu Liao, Yirong Liang, Bai Gao, Zhi Rao, Xiaodong Chu, Yuanyuan Liu, Yang Yang, Yongzhen Fu, Guangcai Wang   +10 more
doaj   +1 more source

Bridging the 39Ar–14C Groundwater Dating Gap: A Dual‐Permeability Transport Perspective Based on Numerical Modeling and Field Data

Water Resources Research, Volume 61, Issue 12, December 2025.
Abstract Groundwater dating studies rely on environmental tracers to estimate residence times, but most available reliable tracers cover either short (days to decades; e.g., 222Rn, 3H/3He, 85Kr) or extended timescales (millennia to millions of years; e.g., 4He, 36Cl, 81Kr). This leaves a critical gap in age information for intermediate residence times (
S. L. Musy, K. Hinsby, D. Wachs, J. Sültenfuss, L. Troldborg, W. Aeschbach, O. S. Schilling, R. Purtschert   +7 more
wiley   +1 more source

RESULTS OF RADIATION-HYGIENIC MONITORING OF THE BASIC PARAMETERS OF THE HUMAN ENVIRONMENT IN THE KIROV REGION

Радиационная гигиена, 2015
The paper describes the experience of the laboratory of radiation monitoring in the the Kirov region since 1963. The results of long-term measurements of the environmental objects are presented.
B. N. Skolotnev, L. A. Chirkova, A. S. Dvinskikh, M. D. Kuznetsova   +3 more
doaj  

Niveles de radón (222Rn) en oficina pública de Aldama, Chihuahua, México y grado de exposición al trabajador

Acta Universitaria, 2020
La inhalación de gas radón (222Rn) induce cáncer de pulmón en humanos. El objetivo de este estudio fue cuantificar la concentración de 222Rn en una oficina pública. El estudio se llevó a cabo en dos etapas; en la primera etapa (PE) se
Hilse Ximena Salinas-Ramírez, Héctor Osbaldo Rubio-Arias, Luis Colmenero-Sujo, Sergio Dionisio Luévano-Gurrola, Jesús Manuel Ochoa-Rivero   +4 more
doaj   +1 more source

Effect of groundwater on the ecological water environment of typical inland lakes in the Inner Mongolian Plateau

Journal of Groundwater Science and Engineering, 2022
To explore the causes of the ecological environment deterioration of lakes in the Inner Mongolia Plateau, this study took a typical inland lake Daihai as an example, and investigated the groundwater recharge in the process of lake shrinkage and ...
Chu Yu, Li-jie Wu, Yi-long Zhang, Xiu-ya Wang, Zhan-chuan Wang, Zhou Zhang   +5 more
doaj   +1 more source