Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array
Field data are needed for a better understanding of sea ice decline in the context of climate change. The rapid technological and methodological advances of the last decade have led to a reconsideration of seismic methods in this matter. In particular, passive seismology has filled an important gap...
Published in: | Journal of Geophysical Research: Oceans |
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American Geophysical Union
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Online Access: | http://hdl.handle.net/10138/316261 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/316261 2024-01-07T09:46:36+01:00 Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array Moreau, Ludovic Boué, Pierre Serripierri, Agathe Weiss, Jérôme Hollis, Dan Pondaven, Ildut Vial, Benjamin Garambois, Stéphane Larose, Éric Helmstetter, Agnès Stehly, Laurent Hillers, Gregor Gilbert, Olivier Department of Geosciences and Geography Institute of Seismology Helsinki Institute of Urban and Regional Studies (Urbaria) 2020-06-18T06:42:01Z 17 application/pdf http://hdl.handle.net/10138/316261 eng eng American Geophysical Union 10.1029/2019JC015709 Moreau , L , Boué , P , Serripierri , A , Weiss , J , Hollis , D , Pondaven , I , Vial , B , Garambois , S , Larose , É , Helmstetter , A , Stehly , L , Hillers , G & Gilbert , O 2020 , ' Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array ' , Journal of Geophysical Research : Oceans , vol. 125 , no. 4 , ARTN e2019JC015709 . https://doi.org/10.1029/2019JC015709 RIS: urn:B379C8BDE379DE6B507BC52A7AF7CA57 ORCID: /0000-0003-2341-1892/work/75945900 fba58ba6-9c37-4fe5-8bc0-174b9031eea3 http://hdl.handle.net/10138/316261 000534476600023 unspecified openAccess info:eu-repo/semantics/openAccess 1171 Geosciences Sea ice monitoring thickness mechanical properties seismic noise guided waves array processing MODES DISPERSION Article acceptedVersion 2020 ftunivhelsihelda 2023-12-14T00:07:20Z Field data are needed for a better understanding of sea ice decline in the context of climate change. The rapid technological and methodological advances of the last decade have led to a reconsideration of seismic methods in this matter. In particular, passive seismology has filled an important gap by removing the need to use active sources. We present a seismic experiment where an array of 247 geophones was deployed on sea ice, in the Van Mijen fjord near Sveagruva (Svalbard). The array is a mix of 1C and 3C stations with sampling frequencies of 500 and 1000 Hz. They recorded continuously the ambient seismic field in sea ice between 28 February and 26 March 2019. Data also include active acquisitions on 1 and 26 March with a radar antenna, a shaker unit, impulsive sources, and artificial sources of seismic noise. This data set is of unprecedented quality regarding sea ice seismic monitoring, as it also includes thousands of microseismic events recorded each day. By combining passive seismology approaches with specific array processing methods, we demonstrate that the multimodal dispersion curves of sea ice can be calculated without an active source and then used to infer sea ice properties. We calculated an ice thickness, Young's modulus, and Poisson's ratio with values h=543 cm, E=3.90.15 GPa, and nu=0.340.02 on 1 March, and h=583 cm, E=4.4 +/- 0.15 GPa, and nu=0.32 +/- 0.02 on 5 March. These values are consistent with in situ field measurements and observations. Peer reviewed Article in Journal/Newspaper Sea ice Svalbard Sveagruva HELDA – University of Helsinki Open Repository Svalbard Sveagruva ENVELOPE(16.720,16.720,77.900,77.900) Journal of Geophysical Research: Oceans 125 4 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
1171 Geosciences Sea ice monitoring thickness mechanical properties seismic noise guided waves array processing MODES DISPERSION |
spellingShingle |
1171 Geosciences Sea ice monitoring thickness mechanical properties seismic noise guided waves array processing MODES DISPERSION Moreau, Ludovic Boué, Pierre Serripierri, Agathe Weiss, Jérôme Hollis, Dan Pondaven, Ildut Vial, Benjamin Garambois, Stéphane Larose, Éric Helmstetter, Agnès Stehly, Laurent Hillers, Gregor Gilbert, Olivier Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array |
topic_facet |
1171 Geosciences Sea ice monitoring thickness mechanical properties seismic noise guided waves array processing MODES DISPERSION |
description |
Field data are needed for a better understanding of sea ice decline in the context of climate change. The rapid technological and methodological advances of the last decade have led to a reconsideration of seismic methods in this matter. In particular, passive seismology has filled an important gap by removing the need to use active sources. We present a seismic experiment where an array of 247 geophones was deployed on sea ice, in the Van Mijen fjord near Sveagruva (Svalbard). The array is a mix of 1C and 3C stations with sampling frequencies of 500 and 1000 Hz. They recorded continuously the ambient seismic field in sea ice between 28 February and 26 March 2019. Data also include active acquisitions on 1 and 26 March with a radar antenna, a shaker unit, impulsive sources, and artificial sources of seismic noise. This data set is of unprecedented quality regarding sea ice seismic monitoring, as it also includes thousands of microseismic events recorded each day. By combining passive seismology approaches with specific array processing methods, we demonstrate that the multimodal dispersion curves of sea ice can be calculated without an active source and then used to infer sea ice properties. We calculated an ice thickness, Young's modulus, and Poisson's ratio with values h=543 cm, E=3.90.15 GPa, and nu=0.340.02 on 1 March, and h=583 cm, E=4.4 +/- 0.15 GPa, and nu=0.32 +/- 0.02 on 5 March. These values are consistent with in situ field measurements and observations. Peer reviewed |
author2 |
Department of Geosciences and Geography Institute of Seismology Helsinki Institute of Urban and Regional Studies (Urbaria) |
format |
Article in Journal/Newspaper |
author |
Moreau, Ludovic Boué, Pierre Serripierri, Agathe Weiss, Jérôme Hollis, Dan Pondaven, Ildut Vial, Benjamin Garambois, Stéphane Larose, Éric Helmstetter, Agnès Stehly, Laurent Hillers, Gregor Gilbert, Olivier |
author_facet |
Moreau, Ludovic Boué, Pierre Serripierri, Agathe Weiss, Jérôme Hollis, Dan Pondaven, Ildut Vial, Benjamin Garambois, Stéphane Larose, Éric Helmstetter, Agnès Stehly, Laurent Hillers, Gregor Gilbert, Olivier |
author_sort |
Moreau, Ludovic |
title |
Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array |
title_short |
Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array |
title_full |
Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array |
title_fullStr |
Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array |
title_full_unstemmed |
Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array |
title_sort |
sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
http://hdl.handle.net/10138/316261 |
long_lat |
ENVELOPE(16.720,16.720,77.900,77.900) |
geographic |
Svalbard Sveagruva |
geographic_facet |
Svalbard Sveagruva |
genre |
Sea ice Svalbard Sveagruva |
genre_facet |
Sea ice Svalbard Sveagruva |
op_relation |
10.1029/2019JC015709 Moreau , L , Boué , P , Serripierri , A , Weiss , J , Hollis , D , Pondaven , I , Vial , B , Garambois , S , Larose , É , Helmstetter , A , Stehly , L , Hillers , G & Gilbert , O 2020 , ' Sea ice thickness and elastic properties from the analysis of multimodal guided wave propagation measured with a passive seismic array ' , Journal of Geophysical Research : Oceans , vol. 125 , no. 4 , ARTN e2019JC015709 . https://doi.org/10.1029/2019JC015709 RIS: urn:B379C8BDE379DE6B507BC52A7AF7CA57 ORCID: /0000-0003-2341-1892/work/75945900 fba58ba6-9c37-4fe5-8bc0-174b9031eea3 http://hdl.handle.net/10138/316261 000534476600023 |
op_rights |
unspecified openAccess info:eu-repo/semantics/openAccess |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
125 |
container_issue |
4 |
_version_ |
1787428459285315584 |