Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode
We present a waveform stacking-based earthquake catalog of the seismicity unrest episode in the Svartsengi fissure swarm close to Mt. Thorbjörn, SW Iceland, which started in January 2020 and was still ongoing in January 2021. The magmatic unrest produced more than 5 earthquake swarms comprising thou...
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ftzenodo:oai:zenodo.org:6337788 2023-06-06T11:55:17+02:00 Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode Heimann, Sebastian Isken, Marius Paul Dahm, Torsten Jousset, Philippe Milkereit, Claus Wollin, Christopher Dahm, Roman A. Krawczyk, Charlotte M. Horalek, Josef Hesir, Gylfi P. Blank, Hanna Erbas, Kemas Reinsch, Thomas 2021-03-22 https://zenodo.org/record/6337788 https://doi.org/10.5281/zenodo.6337788 eng eng doi:10.14470/0W7575244885 doi:10.5880/GFZ.2.1.2017.001 doi:10.5281/zenodo.6337787 https://zenodo.org/record/6337788 https://doi.org/10.5281/zenodo.6337788 oai:zenodo.org:6337788 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Nature Geoscience Earthquake Catalog Geophysics Distributed acoustic sensing Earthquake swarm Iceland info:eu-repo/semantics/other dataset 2021 ftzenodo https://doi.org/10.5281/zenodo.633778810.14470/0W757524488510.5880/GFZ.2.1.2017.00110.5281/zenodo.6337787 2023-04-13T23:28:43Z We present a waveform stacking-based earthquake catalog of the seismicity unrest episode in the Svartsengi fissure swarm close to Mt. Thorbjörn, SW Iceland, which started in January 2020 and was still ongoing in January 2021. The magmatic unrest produced more than 5 earthquake swarms comprising thousands of individual events each. We were able to combine local and regional seismic networks with 6 months recording of a 17 km long distributed acoustic sensing (DAS) fibre optical cable with a channel resolution of 4 m. The kHz DAS data were downsampled to 200 Hz and stacked every 64 m. The catalog is based on a migration-based detector / locator technique as for instance implemented in Lassie (Pyrocko). In the accompanying we demonstrate the robustness in a wide variety of applications in seismology. For this dataset, we have extended Lassie to efficiently combine linear ultra-dense sensor arrays with sparse seismological networks. The catalog is in human-readable CSV format, with the timestamp in UTC as seconds from UNIX epoch. The catalog contains all events at all detection levels. In the publication earthquake detections above a threshold of > 400 are shown. Dataset Iceland Zenodo |
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Open Polar |
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Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Earthquake Catalog Geophysics Distributed acoustic sensing Earthquake swarm Iceland |
spellingShingle |
Earthquake Catalog Geophysics Distributed acoustic sensing Earthquake swarm Iceland Heimann, Sebastian Isken, Marius Paul Dahm, Torsten Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode |
topic_facet |
Earthquake Catalog Geophysics Distributed acoustic sensing Earthquake swarm Iceland |
description |
We present a waveform stacking-based earthquake catalog of the seismicity unrest episode in the Svartsengi fissure swarm close to Mt. Thorbjörn, SW Iceland, which started in January 2020 and was still ongoing in January 2021. The magmatic unrest produced more than 5 earthquake swarms comprising thousands of individual events each. We were able to combine local and regional seismic networks with 6 months recording of a 17 km long distributed acoustic sensing (DAS) fibre optical cable with a channel resolution of 4 m. The kHz DAS data were downsampled to 200 Hz and stacked every 64 m. The catalog is based on a migration-based detector / locator technique as for instance implemented in Lassie (Pyrocko). In the accompanying we demonstrate the robustness in a wide variety of applications in seismology. For this dataset, we have extended Lassie to efficiently combine linear ultra-dense sensor arrays with sparse seismological networks. The catalog is in human-readable CSV format, with the timestamp in UTC as seconds from UNIX epoch. The catalog contains all events at all detection levels. In the publication earthquake detections above a threshold of > 400 are shown. |
author2 |
Jousset, Philippe Milkereit, Claus Wollin, Christopher Dahm, Roman A. Krawczyk, Charlotte M. Horalek, Josef Hesir, Gylfi P. Blank, Hanna Erbas, Kemas Reinsch, Thomas |
format |
Dataset |
author |
Heimann, Sebastian Isken, Marius Paul Dahm, Torsten |
author_facet |
Heimann, Sebastian Isken, Marius Paul Dahm, Torsten |
author_sort |
Heimann, Sebastian |
title |
Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode |
title_short |
Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode |
title_full |
Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode |
title_fullStr |
Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode |
title_full_unstemmed |
Combining Horizontal Strain DAS and Local Seismic Stations in a Full Waveform Attribute Stacking Detector/Locator Algorithm: Verification Test for the Thorbjörn, Iceland, 2020 Unrest Episode |
title_sort |
combining horizontal strain das and local seismic stations in a full waveform attribute stacking detector/locator algorithm: verification test for the thorbjörn, iceland, 2020 unrest episode |
publishDate |
2021 |
url |
https://zenodo.org/record/6337788 https://doi.org/10.5281/zenodo.6337788 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Nature Geoscience |
op_relation |
doi:10.14470/0W7575244885 doi:10.5880/GFZ.2.1.2017.001 doi:10.5281/zenodo.6337787 https://zenodo.org/record/6337788 https://doi.org/10.5281/zenodo.6337788 oai:zenodo.org:6337788 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.633778810.14470/0W757524488510.5880/GFZ.2.1.2017.00110.5281/zenodo.6337787 |
_version_ |
1767962277655347200 |