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Glacier Dynamics from in-situ GNSS measurement
The Global Navigation Satellite System (GNSS) enables glaciologists to measure surface motion at unrivaled temporal resolution. This project will use data from on-ice GNSS measurements to gain insights into the response of the subglacial hydraulic system to ice melt, thus telling how glacier basal s
In this project you will process raw GNSS recordings from a 4x4 grid of autonomous on-ice stations that were deployed in summer 2020 over a period of almost 2 months together with additional year-long recordings from one station. With the processed GNSS data you will create a highly temporally resolved 2D velocity map of the sampled glacier surface and a multi seasonal time series Based on this, you will study the influence of temperature, meltwater availability and meltwater discharge on the basal glacier sliding and investigate effects of the evolving subglacial drainage system on the sliding dynamics throughout the glacier. Studying the diurnal stress field at the surface, derived from the velocity maps, will give insights into the glacier volume response to diurnal meltwater input.
In this project you will process raw GNSS recordings from a 4x4 grid of autonomous on-ice stations that were deployed in summer 2020 over a period of almost 2 months together with additional year-long recordings from one station. With the processed GNSS data you will create a highly temporally resolved 2D velocity map of the sampled glacier surface and a multi seasonal time series Based on this, you will study the influence of temperature, meltwater availability and meltwater discharge on the basal glacier sliding and investigate effects of the evolving subglacial drainage system on the sliding dynamics throughout the glacier. Studying the diurnal stress field at the surface, derived from the velocity maps, will give insights into the glacier volume response to diurnal meltwater input.
Studying the response of glacier basal sliding and ice flow dynamics to meltwater supply with high spatial and temporal resolution.
Studying the response of glacier basal sliding and ice flow dynamics to meltwater supply with high spatial and temporal resolution.
For further information please contact Dominik Gräff (graeff@vaw.baug.ethz.ch) and Andreas Bauder (bauder@vaw.baug.ethz.ch)
For further information please contact Dominik Gräff (graeff@vaw.baug.ethz.ch) and Andreas Bauder (bauder@vaw.baug.ethz.ch)