Geomorphology, internal structure, and successive development of a glacier foreland in the semiarid Chilean Andes (Cerro Tapado, upper Elqui Valley, 30°08′ S., 69°55′ W.) — Reply to Discussion by D.C. Nobes

Abstract

We address the criticisms made by Nobes (2015, this issue) on the study by Monnier et al. (2014). We reiterate how an air-filled cavity was evidenced in a debris-covered glacier using ground-penetrating radar (GPR): by calculation of the interval velocity and not only relying on the velocity measured along diffraction events. Also, we show that common mid-point (CMP) measurements were correctly designed and carefully used and interpreted.