“…Other geophysical tools such as seismic refraction and ground-penetrating radar (GPR) can provide valuable information regarding subsurface structure (Holbrook et al, 2014;McClymont, Hayashi, Bentley, & Liard, 2012;Mills, 1990;Neal, 2004;Parsekian, Singha, Minsley, Holbrook, & Slater, 2015). GPR has also been used in a time-lapse capacity to examine subsurface hydrologic function (Allroggen, van Schaik, & Tronicke, 2015;Angermann et al, 2017;Nyquist, Toran, Pitman, Guo, & Lin, 2018).…”