Seismic Mapping of Subglacial Hydrology Reveals Previously Undetected Pressurization Event

• Published in: Journal of Geophysical Research: Earth Surface
• Main Authors: Labedz, Celeste, Bartholomaus, Timothy, Amundson, Jason, Gimbert, Florent, Karplus, Marianne, Tsai, Victor, Veitch, Stephen
• Other Authors: Seismological Laboratory, California Institute of Technology, California Institute of Technology (CALTECH), Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), This work was made possible in part by hard work in the field by Margot Vore, Daniel Bowden, Galen Kaip, and the students and staff of the 2017 Juneau Icefield Research Program. We especially thank Matt Beedle for provision of the photogrammetrically-produced DEM of Lake Linda, following lake drainage. This work was also aided by the advice of Mike Gurnis and Rob Clayton. We thank Paul Winberry and two anonymous reviewers for their helpful feedback, which improved this paper greatly. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1745301. This work was made possible in part by a University of Idaho seed grant, #FY18-01. DEM provided by the Polar Geospatial Center under NSF-OPP awards 1043681, 1559691, and 1542736.
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2022
• Subjects: [SDE]Environmental Sciences; Lemon Creek; Marginal Lake; glacier; glaciers; Alaska
• Online Access: https://hal.science/hal-03852647; https://hal.science/hal-03852647/document; https://hal.science/hal-03852647/file/Labedz_Revision_1123_VCT_FG.pdf; https://doi.org/10.1029/2021JF006406

International audience Understanding the dynamic response of glaciers to climate change is vital for assessing water resources and hazards, and subglacial hydrology is a key player in glacier systems. Traditional observations of subglacial hydrology are spatially and temporally limited, but recent s...