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Cite as

Bean, Christopher J.; Vogfjörd, Kristin S. (2020): Seismic array data for monitoring and tracking tremor sources during subglacial floods and volcanic eruptions at Vatnajökull (Vatna Glacier), Iceland. GFZ Data Services. Dataset/Seismic Network. doi:10.14470/0Y7568667884.

Identifier

10.14470/0Y7568667884

FDSN network code

5L

DataCite metadata

HTML | JSON | XML | INSPIRE | Local XML source file

Terms/rights

Creative Commons Attribution 4.0 International

Creator(s)

Bean, Christopher J. ^a; Vogfjörd, Kristin S. ^b
a Dublin Institute for Advanced Studies (DIAS), ^b Icelandic Met Office (IMO)

Description

• (Abstract) 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. Due to the lack of clear discrete onsets they cannot be located using traditional earthquake location methods. Instead clusters of seismometers (called arrays) are employed to both locate the tremor source and determine the wave type in the tremor (surface vs. body waves). The array data recorded during the Bárðarbunga eruption were used to investigate the nature of shallow, pre-eruptive, long-duration seismic tremor activity related to shallow dyke formation. The sources of the tremor were found to locate at the eruption site and under ice cauldrons which formed on the ice surface during the first weeks of the unrest. Waveform data are available from the GEOFON data centre, under network code 5L.

Title

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

Publisher

GFZ Data Services

Publication Year

2020

Resource Type

Dataset / Seismic Network

Dates

1. Collected 2013-01-01
2. Accepted 2019-12-01
3. Created 2020-05-27

Place(s)

1. Iceland

Contributor(s)

• Hosting institution: Deutsches GeoForschungsZentrum GFZ
• Data manager: GEOFON Data Centre
• Project leaders: Dublin Institute for Advanced Studies (DIAS); Icelandic Met Office (IMO)

Subjects

• SeisData terms: Geophysics Ice MiniSEED Passive seismic Seismometers Temporary Velocity Volcano
• GCMD keywords: Geophysical stations/networks Seismometers
• Other terms: Monitoring system; Seismological stations

Funding Reference(s)

1. European Union’s Seventh Programme for research, technological development and demonstration (308377)

Language

en

Sizes

1. 574GB

Reference(s)

1. Eibl, E.P.S.; Bean, C.J.; Einarsson, B. et al. (2020). Seismic ground vibrations give advanced early-warning of subglacial floods. Nat Commun 11, 2504. doi:10.1038/s41467-020-15744-5 DOI
2. Eibl, E.P.S.; Bean, C.S.; Vogfjörd, K.S; Ying, Y.; Lokmer, I.; Möllhoff, M.; O’Brien, G.S.; Pálsson, F. (2017). Tremor-rich shallow dyke formation followed by silent magma flow at Bárðarbunga in Iceland. Nature Geoscience. doi:10.1038/ngeo2906 DOI
3. Möllhoff, M.; Eibl, E.P.S.; Bean, C.J.; Vogfjörd, K.S. (2017). Remote monitoring of water-flow induced seismic noise. EGU Galileo conference Enviroseis: From process to signal - advancing environmental seismology, 6-9 June 2017, Ohlstadt, Germany.

FDSN network code

5L

Network dates

2013–2017

Data time range

2013–2017

Station Count

25

Seismic metadata

fdsnws-station FDSN StationXML SC3 XML

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