Ground-penetrating radar imaging reveals glacier's drainage network in 3D

Autor: G. Church, A. Bauder, M. Grab, H. Maurer
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: The Cryosphere, Vol 15, Pp 3975-3988 (2021)
Druh dokumentu: article
ISSN: 1994-0416
1994-0424
DOI: 10.5194/tc-15-3975-2021
Popis: Hydrological systems of glaciers have a direct impact on the glacier dynamics. Since the 1950s, geophysical studies have provided insights into these hydrological systems. Unfortunately, such studies were predominantly conducted using 2D acquisitions along a few profiles, thus failing to provide spatially unaliased 3D images of englacial and subglacial water pathways. The latter has likely resulted in flawed constraints for the hydrological modelling of glacier drainage networks. Here, we present 3D ground-penetrating radar (GPR) results that provide high-resolution 3D images of an alpine glacier's drainage network. Our results confirm a long-standing englacial hydrology theory stating that englacial conduits flow around glacial overdeepenings rather than directly over the overdeepening. Furthermore, these results also show exciting new opportunities for high-resolution 3D GPR studies of glaciers.
Databáze: Directory of Open Access Journals
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje