Jousset, Philippe; Hersir, Gylfi P.; Krawczyk, Charlotte; Wollin, Christopher; Lipus, Martin; Reinsch, Thomas; Isken, Marius ; Heimann, Sebastian (LEGACY)
MAGIC (Magma Iceland)
In January 2020, a swarm of earthquakes started under Thorbjorn volcano, Reykjanes, SW Iceland, associated to the uplift of up to 0.5 cm per day. Concern in Iceland was growing and the Iceland Meteorological Office suggested at that time that possibly magma intruded in the crust at shallow depth (3 to 9 km). The ruption occured on 19.03.2021. The GFZ started a seismological Hazard and Risk Team (HART), as soon as February 2020 in cooperation with IMO, ISOR and the University of Iceland. The interrogator was located in Grindavik and was connected to a standard telecom cable. This dataset comprise a selection of wave-forms recorded along an optical fibre of 21 km length. The subset consists of 40 channels at 100 Hz (spatially stacked 9x). The whole time period from January until August 2020 is covered, with a total size of 496 GB. The data is MiniSEED at 4096 bytes record length with STEIM2. Specific full data set is available upon request to the authors.
* Description is taken from seismic metadata, and may not match the preferred title for citations.
German Research Centre for Geosciences GFZ, Potsdam, Germany
To retrieve waveform data and metadata (including instrument responses) for this and
other seismic networks,
Extended Network Information for network 5J
Hersir, Gylfi P.
a a German Research Centre for Geosciences GFZ, Potsdam, Germany, b Iceland GeoSurvey (ISOR), Reykjavik, Iceland
Flovenz, O. G.; Wang, R.; Hersir, G. P.; Dahm, T.; Hainzl, S.; Vassileva, M.; Drouin, V. Heimann, S.; Isken, M. P.; Gudnason, E. A.; Agustsson, K.; Agustsdottir, T.; Horalek, J.; Motagh, M.; Walter, T. R.; Rivalta, E.; Jousset, P.; Krawczyk, C. M.; Milkereit, C. (2022). Cyclical geothermal unrest as a precursor to Iceland’s 2021 Fagradalsfjall eruption. Nature Geoscience, 15 (5), pp. 397-404. doi:10.1038/s41561-022-00930-5
Flóvenz, Ó.; Wang, R., Hersir, G. P.; Ágústsson, K.; Vassileva, M.; Drouin, V.; Heimann, S.; Isken, M.; Hainzl, S.; Gudnason, E. Á.; Ágústsdóttir, T.; Magnússon, I.; Horalec, J.; Milkereit, C.; Motagh, M.; Walter, T.; Rivalta, E.; Jousset, P.; Dahm, T. (2021). The possible role of magma and geothermal fluid in the episodic uplift cycles and intense seismicity beneath the Svartsengi high temperature geothermal field, Iceland. EGU General Assembly 2021, online, 1930 Apr 2021, EGU21-7870. doi:10.5194/egusphere-egu21-7870
Jousset, P.; Hersir, G. P.; Shevchenko, A.; Agustsson, K.; Gudnason, E. A.; Milkereit, C.; Morschhauser, A.; Eibl, E.P.S.; Walter, T.; Reinsch, T.; Erbas, K.; Wollin, C.; Schantz, A.; Samrock, F.; Agustsdottir, T.; Dahm, T.; Flovenz, O.; Krawczyk, C. (2021). Volcano-seismic 2020 unrest in Reykjanes Iceland: The MAGIC multi-parametric rapid response during Covid-19 lockdown. EGU General Assembly 2021, online, 1930 Apr 2021, EGU21-16134. doi:10.5194/egusphere-egu21-16134