Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data
ABSTRACT Microtremor measurements and the horizontal-to-vertical spectral ratio (HVSR) technique, generally used for site effect studies as well as to determine the thickness of soft sedimentary layers, can effectively be applied to map the thickness of glaciers. In this work the radio-echo sounding...
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crcambridgeupr:10.1017/jog.2016.135 2024-09-30T14:26:23+00:00 Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data PICOTTI, STEFANO FRANCESE, ROBERTO GIORGI, MASSIMO PETTENATI, FRANCO CARCIONE, JOSÉ M. 2017 http://dx.doi.org/10.1017/jog.2016.135 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016001350 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 63, issue 238, page 229-248 ISSN 0022-1430 1727-5652 journal-article 2017 crcambridgeupr https://doi.org/10.1017/jog.2016.135 2024-09-18T04:03:36Z ABSTRACT Microtremor measurements and the horizontal-to-vertical spectral ratio (HVSR) technique, generally used for site effect studies as well as to determine the thickness of soft sedimentary layers, can effectively be applied to map the thickness of glaciers. In this work the radio-echo sounding, geoelectric and active seismic methods, widely employed to image the earth interior, are applied to verify the reliability of the HVSR technique in Alpine and Antarctic glacial environments. The technique has been used to analyze passive seismic data from glaciers of the Adamello and Ortles-Cevedale massifs (Italy), the Bernese Oberland Alps (Switzerland) and from the Whillans Ice Stream (West Antarctica). Comparing with the results obtained from the different geophysical imaging methods, we show that the resonance frequency in the HVSR spectra correlates well with the ice thickness at the site, in a wide range from a few tens of meters to more than 800 m. The reliability of the method mainly depends on the coupling of sensors at the glacier surface and on the basal impedance contrast. This passive seismic technique offers a logistically efficient and cost effective method to map glacier and ice-sheet thicknesses. Moreover, under certain conditions, it allows reliable estimations of the basal seismic properties. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Journal of Glaciology West Antarctica Whillans Ice Stream Cambridge University Press Antarctic West Antarctica Whillans ENVELOPE(-64.250,-64.250,-84.450,-84.450) Whillans Ice Stream ENVELOPE(-145.000,-145.000,-83.667,-83.667) Journal of Glaciology 63 238 229 248 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
ABSTRACT Microtremor measurements and the horizontal-to-vertical spectral ratio (HVSR) technique, generally used for site effect studies as well as to determine the thickness of soft sedimentary layers, can effectively be applied to map the thickness of glaciers. In this work the radio-echo sounding, geoelectric and active seismic methods, widely employed to image the earth interior, are applied to verify the reliability of the HVSR technique in Alpine and Antarctic glacial environments. The technique has been used to analyze passive seismic data from glaciers of the Adamello and Ortles-Cevedale massifs (Italy), the Bernese Oberland Alps (Switzerland) and from the Whillans Ice Stream (West Antarctica). Comparing with the results obtained from the different geophysical imaging methods, we show that the resonance frequency in the HVSR spectra correlates well with the ice thickness at the site, in a wide range from a few tens of meters to more than 800 m. The reliability of the method mainly depends on the coupling of sensors at the glacier surface and on the basal impedance contrast. This passive seismic technique offers a logistically efficient and cost effective method to map glacier and ice-sheet thicknesses. Moreover, under certain conditions, it allows reliable estimations of the basal seismic properties. |
format |
Article in Journal/Newspaper |
author |
PICOTTI, STEFANO FRANCESE, ROBERTO GIORGI, MASSIMO PETTENATI, FRANCO CARCIONE, JOSÉ M. |
spellingShingle |
PICOTTI, STEFANO FRANCESE, ROBERTO GIORGI, MASSIMO PETTENATI, FRANCO CARCIONE, JOSÉ M. Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data |
author_facet |
PICOTTI, STEFANO FRANCESE, ROBERTO GIORGI, MASSIMO PETTENATI, FRANCO CARCIONE, JOSÉ M. |
author_sort |
PICOTTI, STEFANO |
title |
Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data |
title_short |
Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data |
title_full |
Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data |
title_fullStr |
Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data |
title_full_unstemmed |
Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data |
title_sort |
estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (hvsr) technique from passive seismic data |
publisher |
Cambridge University Press (CUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1017/jog.2016.135 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143016001350 |
long_lat |
ENVELOPE(-64.250,-64.250,-84.450,-84.450) ENVELOPE(-145.000,-145.000,-83.667,-83.667) |
geographic |
Antarctic West Antarctica Whillans Whillans Ice Stream |
geographic_facet |
Antarctic West Antarctica Whillans Whillans Ice Stream |
genre |
Antarc* Antarctic Antarctica Ice Sheet Journal of Glaciology West Antarctica Whillans Ice Stream |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Journal of Glaciology West Antarctica Whillans Ice Stream |
op_source |
Journal of Glaciology volume 63, issue 238, page 229-248 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2016.135 |
container_title |
Journal of Glaciology |
container_volume |
63 |
container_issue |
238 |
container_start_page |
229 |
op_container_end_page |
248 |
_version_ |
1811646752839696384 |