“…A wide variety of geophysical methods have been employed to image internal structures and characterize physical properties within talus and moraine deposits. These include ground‐penetrating radar (Ardelean, Onaca, Urdea, & Sarasan, 2017), electrical resistivity tomography (McClymont, Hayashi, Bentley, Muir, & Ernst, 2010; McClymont et al, 2011), electromagnetic induction methods (Bucki, Echelmeyer, & MacInnes, 2004), seismic refraction (Langston et al, 2011), and surface nuclear magnetic resonance (Lehmann‐Horn et al, 2011). These methods give essential information on hydrological and geophysical characteristics of alpine aquifers, such as the volume of the deposits, the location of wet and dry areas and the presence of internal structures that may control groundwater flow paths (Clow et al, 2003; McClymont et al, 2011), but do not directly quantify groundwater storage variations.…”