Deuterium excess in groundwater

Author: arne

August undefined, 2024

Webobserved for the δ13C of groundwater and the calculated 14C boron-based dilution, except where the waters emerge in thick peat soil resulting in low δ13C values. 1. INTRODUCTION In Iceland, the deuterium content has been used extensively to trace the origin of groundwater, including geothermal water (Árnason, 1976, 1977). Since 1986 ... WebThe deuterium excess (d-excess) parameter is used to characterize the groundwater and to determine the sources of vapour masses producing rainfall of carbonate aquifer in the …

Dueterim excess of groundwater as a proxy for recharge in an ...

WebApr 29, 2024 · Within this research, water isotope data (δ 2 H, δ 18 O, deuterium excess) from both Sava River and groundwater sites were used along with hydrologic data to examine the extent to which hydrologic conditions affect the isotope signature and whether the interaction between groundwater and the Sava River causes a change in the … WebGroundwater near three air bases in Georgia is contaminated with toxic chemicals that are linked with cancer and other health problems, according to recent tests by the Air … d and a body shop sprinkle road kazoo

Deuterium-depleted Water: What is it? - Dancing with Water

WebLater, a parameter of deuterium excess as a function of humidity has been established, as such the isotopic composition in local meteoric water can be applied to trace local … WebDec 1, 2024 · Deuterium excess shows that non-direct evaporation (capillary evaporation, transpiration) and mineral/evaporite dissolution contribute to >60% salinity in groundwater with TDS>1000mg/L. Non-direct evaporation, like capillary evaporation and transpiration, is proposed as important processes contributing to groundwater salinity based on Cl/Br ... WebStable water isotopes (18O and deuterium) were used for the first time in this region to determine the isotopic characteristics of the different waters. There is a clear seasonal difference in the isotopic ratios and d-excess values between the summer and winter monsoon periods, with a predominance of lighter isotopes in the latter period. d and a benchtops

The deuterium and oxygen-18 isotopic composition of …

Groundwater contamination near Georgia air bases - News

WebThe close relationship between deuterium and oxygen-18 in freshwaters, including precipitation, gives rise to the GMWL, the best-fit line (delta D=8* delta 18 O+10) of all data points. The concept of the deuterium excess … WebDec 1, 2012 · The excess deuterium method revealed that mineral dissolution contributed 81%–98% to the salinity of shallow groundwater and 84%–98% to the salinity of deep … d and a cars for sale in topnessWebDec 1, 2012 · Deuterium excess (d) and TDS versus remaining fraction of reservoir (f) during water evaporation with an initial water d of 10‰ and TDS of 0.15 g/L at 25 °C and … birmingham alabama grocery stores

"WebExamination of deuterium excess in precipitation will help in understanding these processes. However, in comparison to d2Handd18O, deuterium excess is much more rarely studied. [8] The global average d-excess in precipitation is 10% [Craig, 1961], which is attributed to evaporation from an average ocean surface with a sea surface temperature " - Deuterium excess in groundwater

Deuterium excess in groundwater

Application of stable isotope of water and a Bayesian ... - Springer

http://www.science.uwaterloo.ca/~jjgibson/mypdfs/dexcess_JGR_wfigures.pdf http://riogrande.nmt.edu/outside/courses/hyd558/downloads/Set_3_Rivers/Kendall_Coplen2001%20.pdf

Did you know?

WebApr 13, 2024 · Cincinnati – Today, the U.S. Department of Energy’s Office of Environmental Management (EM) awarded the Hanford Integrated Tank Disposition Contract (ITDC) to Hanford Tank Waste Operations & Closure, LLC (H2C) of Lynchburg, Virginia, for work to be performed at the Hanford Site in southeastern Washington State.. H2C is a newly formed … WebJun 23, 2024 · Air temperature and precipitation data (1976–2024), stable isotope composition (δ18O, δ2H) data, and deuterium excess (1980–2024) data were analyzed using principal component analysis (PCA), Fourier analysis (FA), and wavelet analysis (WA). The PCA represented each month by a single dot in the diagram, and …

WebJan 4, 2024 · where d-excess was the deuterium excess value, X was the fraction of summer rainfall, and (1-X) was the fraction of winter rainfall. Estimation of groundwater residence time. The groundwater residence … WebDec 15, 2016 · Groundwater is the only source for irrigation in the old alluvial plains while both surface water (River Nile and irrigation canals) and groundwater are used in the young alluvial plain. ... desert areas of the old alluvial plains below agricultural lands define an evaporation line with a slope of 4.5 and low deuterium excess of <-14‰. These ...

WebMar 1, 2024 · The deuterium excess (d) in precipitation, determined by the stable hydrogen and oxygen isotopes (δ2H and δ18O), is a widely applied parameter in tracing the water vapor source. WebOct 1, 2024 · The use of deuterium excess is an effective tool to determine season wise (pre-monsoon, monsoon and post-monsoon) contribution of evapo-concentration and …

WebSep 22, 2006 · Abstract We measured deuterium excess (d = δD − 8δ18O) in throughfall, groundwater, soil water, spring water, and stream water for 3 years in a small headwater catchment ... This may imply the existence of bypass flow in the soil. Groundwater in the hillslope zone had short residence times, similar to those of the soil water. For ...

Web3 hours ago · Experts may have come a step closer to solving the mystery of why a historic harbour has turned orange as they started intensive surveys at a nearby railway tunnel. Rust-coloured water began ... birmingham alabama historic districtWebJul 1, 2005 · Deuterium excess in water vapor over the ocean is mainly influenced by sea surface isotopic composition, sea surface temperature (SST), source temperature ([T.sub.source]), and relative humidity. This imprint of oceanic conditions (here considered only in terms of [T.sub.source]) in the moisture source areas is largely preserved in the ... d and a cateringWebExcess accumulation of sulfur is a pressing concern in Minnesota, where mining and other industrial activities can produce high sulfate waters. This sulfate can be transformed into sulfide, which harms culturally and ecologically important wild rice populations. While existing research has sought to develop efficient and cost-effective bioremediation … d and a boxingWebcharacteristic for palaeo-groundwater in northern Africa [1]. This finding is also substantiated by the 14c values so far available for some of the collected water samples. The apparent ^C age ranges from about 9000 to 14 000 years B.P. A slightly higher deuterium excess was found for groundwater collected from the dug well GAB-11. d and a businessWebDeuterium gas (D 2, dideuterium) is a primary source of deuterium isotope for the synthesis of deuterium-labeled compounds.Deuterium gas can be conveniently … birmingham alabama home pricesWebJun 14, 2024 · The deuterium excess (d-excess) is a function of the composition of stable isotopes, oxygen (δ18O), and deuterium (δD) in water. It contains information about initial moisture source, evaporation effects during monsoon, and recirculation of moisture from … dan dacian club baschetWebAug 22, 2024 · The local deuterium excess was calculated using the equation proposed by Dansgaard (1964). Using the weighted linear regression model in SPSS software, a correlation analysis of the main ions and environmental parameters in surface water and groundwater in MNNR was conducted, based on which the causes of water salinity … birmingham alabama high schools