Meteoroid studies on DAS and large-N networks: data sets
Abstract We present an outstanding record of local, dense Large-N seismic and distributed acoustic sensor observations of a meteoroid from July 2, 2021 in Iceland. Our dataset includes high-quality observations from seven small aperture arrays of few hundred meters, an infrasound array, and a rotati...
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ftgfzpotsdamdata:oai:doidb.wdc-terra.org:7751 2023-06-18T03:41:22+02:00 Meteoroid studies on DAS and large-N networks: data sets Vera Rodriguez, Ismail Isken, Marius P. Dahm, Torsten Jousset, Philippe Lamb, Oliver D. Kristjánsdóttir, Sigríður Jónsdóttir, Kristín Sanchez-Pastor, Pilar Clinton, John Wollin, Christopher Baird, Alan F. Wuestefel, Andreas Eibl, Eva P. S. Goertz-Allmann, Bettina P. Oye, Volker Hjörleifsdóttir, Vala Obermann, Anne Kraft, Toni Jousset, Philippe Vera-Rodriguez, Ismail Southwest Iceland 02-07-2022 -23 -20 63.7 64.4 2022 https://doi.org/10.5880/GFZ.2.2.2022.002 unknown GFZ Data Services doi:10.1785/0220220236 doi:10.14470/9D7564946595 doi:10.7914/SN/7E_2013 doi:10.7914/zkjm-tj71 doi:10.7914/SN/XH_2021 doi:10.7914/SN/AM doi:10.7914/SN/OR doi:10.7914/SN/3A_2021 doi:10.12686/sed/networks/2c doi:10.12686/sed/networks/ym http://dx.doi.org/10.5880/GFZ.2.2.2022.002 doi:10.5880/GFZ.2.2.2022.002 CC BY 4.0 http://creativecommons.org/licenses/by/4.0/ Large-N seismometers networks Distributed fibre optic sensing EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES > METEORITE ORIGIN Dataset 2022 ftgfzpotsdamdata https://doi.org/10.5880/GFZ.2.2.2022.00210.1785/022022023610.14470/9D756494659510.7914/SN/7E_201310.7914/zkjm-tj7110.7914/SN/XH_202110.7914/SN/AM10.7914/SN/OR10.7914/SN/3A_202110.12686/sed/networks/2c10.12686/sed/networks/ym 2023-06-04T23:40:03Z Abstract We present an outstanding record of local, dense Large-N seismic and distributed acoustic sensor observations of a meteoroid from July 2, 2021 in Iceland. Our dataset includes high-quality observations from seven small aperture arrays of few hundred meters, an infrasound array, and a rotational station, all located within the distance range of 300 km. The high-frequency data show a variety of different phases associated with the source process along the atmospheric trajectory, including impulsive negative 1 first ground motions, a complex coda wave train about 2.5 s long thereafter, an azimuth-dependent stopping phase with reversed polarity between 1-25 s after the first arrival, which is resolved over only a few kilometers. The ground motion amplitude between the first and last arrivals is generally elevated. We associate the waveform in the 2.5 s coda with meteor-atmosphere interactions and nonlinear plasma processes that produce an oscillating shock-wave source pulse. Our data suggest a small azimuth-dependent deflection or dispersion of this source pulse, which may be related to the meteoroid’s deceleration in the atmosphere. We present a finite-length kinematic line-source pulse model that consistently explains the different phases inside and outside the Mach cone segment of our images, their wave amplitude variations, and a polarity change between the first phase and the terminating phase. The previously undiscovered rich directivity effects can also explain seemingly contradictory, time-dependent wave energy beam-directions at the various small aperture arrays and along the DAS cable. A combination of conventional locations and a Bayesian inversion of first and stopping phase arrivals led to a precise localization of the meteor trajectory. Dataset Iceland GFZ Data Services (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
institution |
Open Polar |
collection |
GFZ Data Services (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdamdata |
language |
unknown |
topic |
Large-N seismometers networks Distributed fibre optic sensing EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES > METEORITE ORIGIN |
spellingShingle |
Large-N seismometers networks Distributed fibre optic sensing EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES > METEORITE ORIGIN Vera Rodriguez, Ismail Isken, Marius P. Dahm, Torsten Jousset, Philippe Lamb, Oliver D. Kristjánsdóttir, Sigríður Jónsdóttir, Kristín Sanchez-Pastor, Pilar Clinton, John Wollin, Christopher Baird, Alan F. Wuestefel, Andreas Eibl, Eva P. S. Goertz-Allmann, Bettina P. Oye, Volker Hjörleifsdóttir, Vala Obermann, Anne Kraft, Toni Meteoroid studies on DAS and large-N networks: data sets |
topic_facet |
Large-N seismometers networks Distributed fibre optic sensing EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METEORITES > METEORITE ORIGIN |
description |
Abstract We present an outstanding record of local, dense Large-N seismic and distributed acoustic sensor observations of a meteoroid from July 2, 2021 in Iceland. Our dataset includes high-quality observations from seven small aperture arrays of few hundred meters, an infrasound array, and a rotational station, all located within the distance range of 300 km. The high-frequency data show a variety of different phases associated with the source process along the atmospheric trajectory, including impulsive negative 1 first ground motions, a complex coda wave train about 2.5 s long thereafter, an azimuth-dependent stopping phase with reversed polarity between 1-25 s after the first arrival, which is resolved over only a few kilometers. The ground motion amplitude between the first and last arrivals is generally elevated. We associate the waveform in the 2.5 s coda with meteor-atmosphere interactions and nonlinear plasma processes that produce an oscillating shock-wave source pulse. Our data suggest a small azimuth-dependent deflection or dispersion of this source pulse, which may be related to the meteoroid’s deceleration in the atmosphere. We present a finite-length kinematic line-source pulse model that consistently explains the different phases inside and outside the Mach cone segment of our images, their wave amplitude variations, and a polarity change between the first phase and the terminating phase. The previously undiscovered rich directivity effects can also explain seemingly contradictory, time-dependent wave energy beam-directions at the various small aperture arrays and along the DAS cable. A combination of conventional locations and a Bayesian inversion of first and stopping phase arrivals led to a precise localization of the meteor trajectory. |
author2 |
Jousset, Philippe Vera-Rodriguez, Ismail |
format |
Dataset |
author |
Vera Rodriguez, Ismail Isken, Marius P. Dahm, Torsten Jousset, Philippe Lamb, Oliver D. Kristjánsdóttir, Sigríður Jónsdóttir, Kristín Sanchez-Pastor, Pilar Clinton, John Wollin, Christopher Baird, Alan F. Wuestefel, Andreas Eibl, Eva P. S. Goertz-Allmann, Bettina P. Oye, Volker Hjörleifsdóttir, Vala Obermann, Anne Kraft, Toni |
author_facet |
Vera Rodriguez, Ismail Isken, Marius P. Dahm, Torsten Jousset, Philippe Lamb, Oliver D. Kristjánsdóttir, Sigríður Jónsdóttir, Kristín Sanchez-Pastor, Pilar Clinton, John Wollin, Christopher Baird, Alan F. Wuestefel, Andreas Eibl, Eva P. S. Goertz-Allmann, Bettina P. Oye, Volker Hjörleifsdóttir, Vala Obermann, Anne Kraft, Toni |
author_sort |
Vera Rodriguez, Ismail |
title |
Meteoroid studies on DAS and large-N networks: data sets |
title_short |
Meteoroid studies on DAS and large-N networks: data sets |
title_full |
Meteoroid studies on DAS and large-N networks: data sets |
title_fullStr |
Meteoroid studies on DAS and large-N networks: data sets |
title_full_unstemmed |
Meteoroid studies on DAS and large-N networks: data sets |
title_sort |
meteoroid studies on das and large-n networks: data sets |
publisher |
GFZ Data Services |
publishDate |
2022 |
url |
https://doi.org/10.5880/GFZ.2.2.2022.002 |
op_coverage |
Southwest Iceland 02-07-2022 -23 -20 63.7 64.4 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
doi:10.1785/0220220236 doi:10.14470/9D7564946595 doi:10.7914/SN/7E_2013 doi:10.7914/zkjm-tj71 doi:10.7914/SN/XH_2021 doi:10.7914/SN/AM doi:10.7914/SN/OR doi:10.7914/SN/3A_2021 doi:10.12686/sed/networks/2c doi:10.12686/sed/networks/ym http://dx.doi.org/10.5880/GFZ.2.2.2022.002 doi:10.5880/GFZ.2.2.2022.002 |
op_rights |
CC BY 4.0 http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5880/GFZ.2.2.2022.00210.1785/022022023610.14470/9D756494659510.7914/SN/7E_201310.7914/zkjm-tj7110.7914/SN/XH_202110.7914/SN/AM10.7914/SN/OR10.7914/SN/3A_202110.12686/sed/networks/2c10.12686/sed/networks/ym |
_version_ |
1769006895073329152 |