Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data
Rayleigh wave ellipticity measurements from seismic ambient noise recorded on the Greenland Ice Sheet (GrIS) show complex and anomalous behavior at wave periods sensitive to ice (T < 3–4 s). To understand these complex observations, we compare them with synthetic ellipticity measurements obtained...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2023
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Online Access: | http://hdl.handle.net/2122/16948 https://doi.org/10.1029/2023GL103673 |
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ftingv:oai:www.earth-prints.org:2122/16948 2024-04-28T07:59:15+00:00 Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data Jones, Glenn A Ferreira, Ana M. G. Kulessa, Bernd Schimmel, Martin Berbellini, Andrea Morelli, Andrea #PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia 2023-08-07 http://hdl.handle.net/2122/16948 https://doi.org/10.1029/2023GL103673 en eng American Geophysical Union Geophysical Research Letters /50 (2023) 0094-8276 1944-8007 http://hdl.handle.net/2122/16948 doi:10.1029/2023GL103673 open 04.06. Seismology article 2023 ftingv https://doi.org/10.1029/2023GL103673 2024-04-09T23:35:14Z Rayleigh wave ellipticity measurements from seismic ambient noise recorded on the Greenland Ice Sheet (GrIS) show complex and anomalous behavior at wave periods sensitive to ice (T < 3–4 s). To understand these complex observations, we compare them with synthetic ellipticity measurements obtained from synthetic ambient noise computed for various seismic velocity and attenuation models, including surface wave overtone effects. We find that in dry snow conditions within the interior of the GrIS, to first order the anomalous ellipticity observations can be explained by ice models associated with the accumulation and densification of snow into firn. We also show that the distribution of ellipticity measurements is strongly sensitive to seismic attenuation and the thermal structure of the ice. Our results suggest that Rayleigh wave ellipticity is well suited for monitoring changes in firn properties and thermal composition of the Greenland and Antarctic ice sheets in a changing climate. Published e2023GL103673 OST1 Alla ricerca dei Motori Geodinamici JCR Journal Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Geophysical Research Letters 50 15 |
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Open Polar |
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Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
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ftingv |
language |
English |
topic |
04.06. Seismology |
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04.06. Seismology Jones, Glenn A Ferreira, Ana M. G. Kulessa, Bernd Schimmel, Martin Berbellini, Andrea Morelli, Andrea Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data |
topic_facet |
04.06. Seismology |
description |
Rayleigh wave ellipticity measurements from seismic ambient noise recorded on the Greenland Ice Sheet (GrIS) show complex and anomalous behavior at wave periods sensitive to ice (T < 3–4 s). To understand these complex observations, we compare them with synthetic ellipticity measurements obtained from synthetic ambient noise computed for various seismic velocity and attenuation models, including surface wave overtone effects. We find that in dry snow conditions within the interior of the GrIS, to first order the anomalous ellipticity observations can be explained by ice models associated with the accumulation and densification of snow into firn. We also show that the distribution of ellipticity measurements is strongly sensitive to seismic attenuation and the thermal structure of the ice. Our results suggest that Rayleigh wave ellipticity is well suited for monitoring changes in firn properties and thermal composition of the Greenland and Antarctic ice sheets in a changing climate. Published e2023GL103673 OST1 Alla ricerca dei Motori Geodinamici JCR Journal |
author2 |
#PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia |
format |
Article in Journal/Newspaper |
author |
Jones, Glenn A Ferreira, Ana M. G. Kulessa, Bernd Schimmel, Martin Berbellini, Andrea Morelli, Andrea |
author_facet |
Jones, Glenn A Ferreira, Ana M. G. Kulessa, Bernd Schimmel, Martin Berbellini, Andrea Morelli, Andrea |
author_sort |
Jones, Glenn A |
title |
Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data |
title_short |
Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data |
title_full |
Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data |
title_fullStr |
Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data |
title_full_unstemmed |
Constraints on the Cryohydrological Warming of Firn and Ice in Greenland From Rayleigh Wave Ellipticity Data |
title_sort |
constraints on the cryohydrological warming of firn and ice in greenland from rayleigh wave ellipticity data |
publisher |
American Geophysical Union |
publishDate |
2023 |
url |
http://hdl.handle.net/2122/16948 https://doi.org/10.1029/2023GL103673 |
genre |
Antarc* Antarctic Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet |
op_relation |
Geophysical Research Letters /50 (2023) 0094-8276 1944-8007 http://hdl.handle.net/2122/16948 doi:10.1029/2023GL103673 |
op_rights |
open |
op_doi |
https://doi.org/10.1029/2023GL103673 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
15 |
_version_ |
1797572096156499968 |