Iceland subglacial Volcanoes interdisciplinary early warning system

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In situ surface motion measurements at Mýrdalsjökull

First results show that Low-Cost-GNSS receivers, as installed on Mýrdalsjökull in summer 2013 and 2015, offer the possibility to monitor glacier deformations at the one centimeter-level.

A horizontal velocity of 21.7 m/a was measured for a 33 day period in late summer 2013, while 13.4 m/a were measured for an entire year (August 2013 till August 2014). This suggests that the surface motion of Northern Mýrdalsjökull is strongly influenced by basal melting during summer.