Multi-method assessment of connectivity between surface water and shallow groundwater: the case of Limarí River basin, north-central Chile

Assessment of groundwater–surface water interaction using long-term hydrochemical data and isotope hydrology: Headwaters of the Condamine River, Southeast Queensland, Australia

“…Combined with other environmental tracers, 222 Rn is a powerful method used for estimation of fluxes between streams and aquifers. The use of 222 Rn has been widely applied in the investigation of hydrological processes, including tracing groundwater input into streams (Atkinson et al, 2015;Cook et al, 2003;Oyarzún et al, 2014;Stellato et al, 2008;Unland et al, 2013), estimation of river water infiltration rates into banks (Hoehn and von Gunten, 1989) and tracking river infiltration into adjacent alluvial aquifers (Bertin and Bourg, 1994;Stellato et al, 2013). 222 Rn is a naturally occurring noble gas with half-life of 3.82 days, which originates from mineral grains direct radioactive (α-recoil) decay of 226 Ra (half-life = 1.6 × 10 3 a), which belongs to the uraniumseries ( 238 U) isotopes.…”

“…There are few examples where MSA is applied to large hydrochemical datasets for the investigation of GW-SW interactions at the catchment scale, by combining its outputs with stable isotopes and environmental tracer measurements, e.g. King et al (2014); and Oyarzún et al (2014).…”

“…The advantages of using multiple techniques simultaneously, including physical data analysis, hydrochemistry and environmental tracers (e.g. stable isotopes of oxygen and hydrogen and radioisotopes -radon222, or 222 Rn), have been highlighted by Négrel et al (2003), Menció and Mas-Pla (2008), Baskaran et al (2009), Cartwright et al (2011, Gusyev et al (2013), Unland et al (2013), and Oyarzún et al (2014).…”

Using multiple environmental methods to estimate groundwater discharge into an arid lake (Dakebo Lake, Inner Mongolia, China)

“…Currently, three main methods are used to estimate hydrodynamic exchanges between groundwater and surface water: the hydrodynamic method (Kalbus et al 2006), environmental isotope tracing method (Carey and Quinton 2005;Yin et al 2011;Oyarzún et al 2014), and thermal tracing method (Hatch et al 2006;Essaid et al 2008;Rau et al 2014). Isotopes of 18 O and 2 H are widely used because their isotopic compositions differ markedly between water sources and they are not influenced by other factors during the mixing process (Marimuthu et al 2005).…”

Spatial and temporal characteristics of 2H and 18O in the basin of Dongting Lake: impact of monsoon precipitation

“…Hydrogen and oxygen, the basic components of water, move together with water itself. Therefore, deuterium and oxygen-18 can be used to identify the origin of different bodies of water in the water cycle and understand their interactions [5][6][7].…”