Seismic array data for monitoring and tracking tremor sources during subglacial floods and volcanic eruptions at Vatnajökull (Vatna Glacier), Iceland ...

• Main Authors: Bean, Christopher J., Vogfjörd, Kristin S.
• Format: Dataset
• Language: English
• Published: GFZ Data Services 2020
• Subjects: Broadband seismic waveforms; Seismic monitoring; temporary local seismic network; Monitoring system; Seismological stations; In Situ/Laboratory Instruments > Magnetic/Motion Sensors > Seismometers; In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS; Vatnajökull; glacier; Iceland
• Online Access: https://dx.doi.org/10.14470/0y7568667884; https://geofon.gfz-potsdam.de/doi/network/5L/2013

As part of project FUTUREVOLC, European volcanological supersite in Iceland: a monitoring system and network for the future, two 7-element seismic broadband arrays were installed outside the western margin of Vatnajökull glacier, Iceland. The goal was to study seismic tremor associated with floods originating in the eastern and western Skaftár cauldrons. A third temporary array was installed during the Bárðarbunga 2014-2015 volcanic eruption near the eruption site. The aim of the array installations was to discriminate between different seismic tremor sources, namely volcanic eruptions, lava flows, hydrothermal explosions and subglacial floods (jökulhlaups). The main aim of the two arrays installed on the western margin of Vatnajökull was to study their early-warning potential through the analysis of four subglacial floods observed during the study period. The seismic vibrations associated with these floods have an emergent start, are of long duration and are referred to as tremor or high-frequency noise. ...