Ryan A. Venturelli

1 month ago | nature.com | Huw J. Horgan |Craig Stewart |Craig Stevens |Gavin Dunbar |Linda Balfoort |Britney Schmidt | +15 more

AbstractBeneath Antarctica’s ice sheets, a little-observed network of liquid water connects vast landscapes and contributes to the motion of the overriding ice. When this subglacial water reaches the ocean cavity beneath ice shelves, it mixes with seawater, amplifying melt and in places forming deep channels in the base of the ice.

Mar 23, 2025 | onlinelibrary.wiley.com | Marion McKenzie |Ellianna Abrahams |Fernando Perez |Fernando Pérez |Ryan A. Venturelli

Li et al. (2025 this issue) state that they identify areas for improvement to our development of bedfinder through including more data sets at training, evaluating our filtering methods, and exploring modular approaches of the tool. Here we respond to these Comments by highlighting where we have already addressed each of these areas within our work and notably, our supporting information (Abrahams et al. 2024).

Nov 27, 2024 | onlinelibrary.wiley.com | Fernando Perez |Fernando Pérez |Ryan A. Venturelli |Ellianna Abrahams |Marion McKenzie

Redistribution and preservation of sediment in the subglacial environment provides a glimpse into controls on ice streaming and stability (e.g. Spagnolo et al. 2014, 2017; Prothro et al. 2018; Simkins et al. 2018; Greenwood et al. 2021; McKenzie et al. 2022b). Both erosional and depositional streamlined subglacial bedforms elucidate overlying ice controls of sediment distribution, ice speed (Stokes & Clark 2002; Stokes et al. 2013, 2016), basal shear and slip speed (Zoet et al.