Array seismologic insights into Grímsvötn jökulhlaups, Iceland

Dietrich, Thoralf; Eibl, Eva P. S.; Pálsson, Finnur; Magnússon, Eyjólfur; Bergsson, Bergur H.; Vollmer, Daniel; Heimann, Sebastian; Lindner, Fabian; Binder, Daniel; Roessner, S.

doi:10.57757/IUGG23-4481

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Conference Paper

Array seismologic insights into Grímsvötn jökulhlaups, Iceland

Authors

Dietrich, Thoralf
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Eibl, Eva P. S.
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Pálsson, Finnur
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Magnússon, Eyjólfur
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Bergsson, Bergur H.
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Vollmer, Daniel
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Heimann, Sebastian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Lindner, Fabian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Binder, Daniel
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

/persons/resource/roessner

Roessner, S.
1.4 Remote Sensing, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

External Ressource

No external resources are shared

Fulltext (public)

There are no public fulltexts stored in GFZpublic

Supplementary Material (public)

There is no public supplementary material available

Citation

Dietrich, T., Eibl, E. P. S., Pálsson, F., Magnússon, E., Bergsson, B. H., Vollmer, D., Heimann, S., Lindner, F., Binder, D., Roessner, S. (2023): Array seismologic insights into Grímsvötn jökulhlaups, Iceland, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4481

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021909

Abstract

Jökulhlaups (also known as GLOF, glacier lake outburst floods) that travel subglacially are only detectable indirectly, via observation of the glacier’s surface deformation (GNSS, InSAR) or the seismic signals they generate.At Iceland’s Vatnajökull glacier, floods from Grímsvötn travel more than 40km below the ice before feeding into the glacial river.To study the propagation and the physics of the jökulhlaups, temporal seismic arrays were installed close to the terminus, i.e. west, southwest and south of Vatnajökull. Frequency-wavenumber-analysis (fk-analysis) and match field processing (MFP) are two seismic methods able to locate the generated tremor along the propagation path. We present insights into Grímsvötn floods between 2014-2016 and October 2022. We discuss the properties of the 3-component seismic data and their location with respect to hydrometric and GNSS observations.Ultimately, these understandings may contribute to improve the early warning of subglacial floods.