Can we track the up-glacier migration of a subglacial channelized drainage system by means of environmental seismology?

During the melt season, subglacial drainage systems typically evolve from a high-pressure, distributed system to a low-pressure, channelized network that progressively extends up-glacier from the terminus in response to meltwater availability. Resolving the spatial and temporal evolution of this transition remains challenging, particularly with small seismological networks, or even single stations.In spring 2023, we deployed three seismological stations along the central flow line of the southeast outlet glacier of the A. P. Olsen Ice Cap, northeast Greenland. The stations spanned the full vertical extent of the ablation zone and continuously recorded throughout the 2023 melt season.We apply and compare different seismological analysis techniques with the potential to detect changes in subglacial hydrological conditions. The seismic observations are interpreted in conjunction with meteorological data from two automatic weather stations located in the lower and upper ablation zone. We assess the capability of environmental seismological monitoring with single stations to track drainage system development in space and time.