Characterising sediment thickness beneath a Greenlandic outlet glacier using distributed acoustic sensing: preliminary observations and progress towards an efficient machine learning approach. - Booth, Adam D.; Christoffersen, Poul; Pretorius, Andrew; Chapman, Joseph; Hubbard, Bryn; Smith, Emma C.; de Ridder, Sjoerd; Nowacki, Andy; Lipovsky, Bradley Paul; Denolle, Marine (Annals of Glaciology, 2022)