Spatial and temporal variability of snow accumulation in East Antarctica from traverse data
Recent snow accumulation rate is a key quantity for ice core and mass balance studies. Several accumulation measurement methods (stake farm, fin core, snow-radar profiling, surface morphology, remote sensing) were used, compared and integrated at eight sites along a transect from Terra Nova Bay to D...
| Published in: | Journal of Glaciology |
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| Main Authors: | , , , , , , , , , , , , , |
| Other Authors: | , , , , , , , , , , , , , , , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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International Glaciological Society
2005
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| Subjects: | |
| Online Access: | http://hdl.handle.net/2122/4052 https://doi.org/10.3189/172756505781829502 |
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ftingv:oai:www.earth-prints.org:2122/4052 |
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Open Polar |
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Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
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English |
| topic |
East Antarctica GPR GPS snow accumulation 02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction 02. Cryosphere::02.02. Glaciers::02.02.06. Mass balance |
| spellingShingle |
East Antarctica GPR GPS snow accumulation 02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction 02. Cryosphere::02.02. Glaciers::02.02.06. Mass balance Frezzotti, M. Pourchet, M. Flora, O. Gandolfi, S. Gay, M. Urbini, S. Vincent, C. Becagli, S. Gragnani, R. Proposito, M. Severi, M. Traversi, R. Udisti, R. Fily, M. Spatial and temporal variability of snow accumulation in East Antarctica from traverse data |
| topic_facet |
East Antarctica GPR GPS snow accumulation 02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction 02. Cryosphere::02.02. Glaciers::02.02.06. Mass balance |
| description |
Recent snow accumulation rate is a key quantity for ice core and mass balance studies. Several accumulation measurement methods (stake farm, fin core, snow-radar profiling, surface morphology, remote sensing) were used, compared and integrated at eight sites along a transect from Terra Nova Bay to Dome C (East Antarctica) to provide information about the spatial and temporal variability of snow accumulation. Thirty-nine cores were dated by identifying tritium/β marker levels (1965–66[AUTHOR: Please check dates, I don’t think this agrees with table 1]) and no-sea-salt (nss) SO4 raised to the power of 2– spikes of the Tambora volcanic event (1816) in order to provide information on temporal variability. Cores were linked by snow radar and GPS surveys to provide detailed information on spatial variability in snow accumulation. Stake farm and ice core accumulation rates are observed to differ significantly, but isochrones (snow radar) correlate well with ice core derived accumulation. The accumulation/ablation pattern from stake measurements suggests that the annual local noise (metre scale) in snow accumulation can approach 2 years of ablation and more than four times the average annual accumulation, with no accumulation or ablation for a 5-year period in up to 40% of cases. The spatial variability of snow accumulation at the kilometre scale is one order of magnitude higher than temporal variability at the multi-decadal/secular scale. Stake measurements and firn cores at Dome C confirm an approximate 30% increase in accumulation over the last two centuries, with respect to the average over the last 5000 years. Published 113-124 3.8. Geofisica per l'ambiente JCR Journal reserved |
| author2 |
Frezzotti, M.; Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Pourchet, M.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Flora, O.; Dipartimento di Scienze Geologiche, Ambientali e Marine, University of Trieste, Trieste, Italy Gandolfi, S.; Dipartimento di Ingegneria delle Strutture, dei Trasporti, delle Acque, del Rilevamento, del Territorio, University of Bologna, Bologna, Italy Gay, M.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Urbini, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Vincent, C.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Becagli, S.; Dipartimento di Chimica, University of Florence, Florence, Italy Gragnani, R.; Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Proposito, M.; Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Severi, M.; Dipartimento di Chimica, University of Florence, Florence, Italy Traversi, R.; Dipartimento di Chimica, University of Florence, Florence, Italy Udisti, R.; Dipartimento di Chimica, University of Florence, Florence, Italy Fily, M.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Dipartimento di Scienze Geologiche, Ambientali e Marine, University of Trieste, Trieste, Italy Dipartimento di Ingegneria delle Strutture, dei Trasporti, delle Acque, del Rilevamento, del Territorio, University of Bologna, Bologna, Italy Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Dipartimento di Chimica, University of Florence, Florence, Italy |
| format |
Article in Journal/Newspaper |
| author |
Frezzotti, M. Pourchet, M. Flora, O. Gandolfi, S. Gay, M. Urbini, S. Vincent, C. Becagli, S. Gragnani, R. Proposito, M. Severi, M. Traversi, R. Udisti, R. Fily, M. |
| author_facet |
Frezzotti, M. Pourchet, M. Flora, O. Gandolfi, S. Gay, M. Urbini, S. Vincent, C. Becagli, S. Gragnani, R. Proposito, M. Severi, M. Traversi, R. Udisti, R. Fily, M. |
| author_sort |
Frezzotti, M. |
| title |
Spatial and temporal variability of snow accumulation in East Antarctica from traverse data |
| title_short |
Spatial and temporal variability of snow accumulation in East Antarctica from traverse data |
| title_full |
Spatial and temporal variability of snow accumulation in East Antarctica from traverse data |
| title_fullStr |
Spatial and temporal variability of snow accumulation in East Antarctica from traverse data |
| title_full_unstemmed |
Spatial and temporal variability of snow accumulation in East Antarctica from traverse data |
| title_sort |
spatial and temporal variability of snow accumulation in east antarctica from traverse data |
| publisher |
International Glaciological Society |
| publishDate |
2005 |
| url |
http://hdl.handle.net/2122/4052 https://doi.org/10.3189/172756505781829502 |
| geographic |
East Antarctica Terra Nova Bay |
| geographic_facet |
East Antarctica Terra Nova Bay |
| genre |
Antarc* Antarctica East Antarctica ice core |
| genre_facet |
Antarc* Antarctica East Antarctica ice core |
| op_relation |
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ftingv:oai:www.earth-prints.org:2122/4052 2023-05-15T13:51:39+02:00 Spatial and temporal variability of snow accumulation in East Antarctica from traverse data Frezzotti, M. Pourchet, M. Flora, O. Gandolfi, S. Gay, M. Urbini, S. Vincent, C. Becagli, S. Gragnani, R. Proposito, M. Severi, M. Traversi, R. Udisti, R. Fily, M. Frezzotti, M.; Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Pourchet, M.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Flora, O.; Dipartimento di Scienze Geologiche, Ambientali e Marine, University of Trieste, Trieste, Italy Gandolfi, S.; Dipartimento di Ingegneria delle Strutture, dei Trasporti, delle Acque, del Rilevamento, del Territorio, University of Bologna, Bologna, Italy Gay, M.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Urbini, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Vincent, C.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Becagli, S.; Dipartimento di Chimica, University of Florence, Florence, Italy Gragnani, R.; Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Proposito, M.; Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Severi, M.; Dipartimento di Chimica, University of Florence, Florence, Italy Traversi, R.; Dipartimento di Chimica, University of Florence, Florence, Italy Udisti, R.; Dipartimento di Chimica, University of Florence, Florence, Italy Fily, M.; Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Ente per le Nuove Tecnologie, l’Energia e l’Ambiente, ‘Progetto Clima Globale’, Rome, Italy Laboratoire de Glaciologie et Géophysique de l’Environnement, CNRS, Saint Martin d’Hères, France Dipartimento di Scienze Geologiche, Ambientali e Marine, University of Trieste, Trieste, Italy Dipartimento di Ingegneria delle Strutture, dei Trasporti, delle Acque, del Rilevamento, del Territorio, University of Bologna, Bologna, Italy Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Dipartimento di Chimica, University of Florence, Florence, Italy 2005-07-21 http://hdl.handle.net/2122/4052 https://doi.org/10.3189/172756505781829502 en eng International Glaciological Society Journal of Glaciolgy 172 / 51 (2005) Alley, R.B. 1988. Concerning the deposition and diagenesis of strata in polar firn. J. Glaciol., 34(118), 283–290. Becagli, S. and. others. 2003. Variability of snow depositions along the 1998/99 ITASE traverse. Terra Antartica Reports, 8, 43–48. Bell, R.E., M. Studinger, A.A. Tikku, G.K.C. Clarke, M.M. Gutner and C. Meertens. 2002. Origin and fate of Lake Vostok water frozen to the base of the East Antarctic ice sheet. Nature, 416(6878), 307–310. Black, H.P. and W. Budd. 1964. Accumulation in the region of Wilkes, Wilkes Land, Antarctica. J. Glaciol., 5(37), 3–15. Bromwich, D.H., Z. Guo, L. Bai and Q. Chen. 2004. Modelled Antarctic precipitation. Part I: spatial and temporal varialbility. J. Climate, 17(3), 427–447. Bromwich, D.H. and C.J. Weaver. 1983. Latitudinal displacement from main moisture source controls 18O of snow in coastal Antarctica. Nature, 301(5896), 145–147. Capra, A., R. Cefalo, S. Gandolfi, G. Manzoni, I.E. Tabacco and L. Vittuari. 2000. 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Berlin, etc., Springer-Verlag, 541–560. (NATO ASI Series I: Global Environmental Change 43.) http://hdl.handle.net/2122/4052 doi:10.3189/172756505781829502 restricted East Antarctica GPR GPS snow accumulation 02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction 02. Cryosphere::02.02. Glaciers::02.02.06. Mass balance article 2005 ftingv https://doi.org/10.3189/172756505781829502 https://doi.org/10.1038/nature710 2022-07-29T06:04:57Z Recent snow accumulation rate is a key quantity for ice core and mass balance studies. Several accumulation measurement methods (stake farm, fin core, snow-radar profiling, surface morphology, remote sensing) were used, compared and integrated at eight sites along a transect from Terra Nova Bay to Dome C (East Antarctica) to provide information about the spatial and temporal variability of snow accumulation. Thirty-nine cores were dated by identifying tritium/β marker levels (1965–66[AUTHOR: Please check dates, I don’t think this agrees with table 1]) and no-sea-salt (nss) SO4 raised to the power of 2– spikes of the Tambora volcanic event (1816) in order to provide information on temporal variability. Cores were linked by snow radar and GPS surveys to provide detailed information on spatial variability in snow accumulation. Stake farm and ice core accumulation rates are observed to differ significantly, but isochrones (snow radar) correlate well with ice core derived accumulation. The accumulation/ablation pattern from stake measurements suggests that the annual local noise (metre scale) in snow accumulation can approach 2 years of ablation and more than four times the average annual accumulation, with no accumulation or ablation for a 5-year period in up to 40% of cases. The spatial variability of snow accumulation at the kilometre scale is one order of magnitude higher than temporal variability at the multi-decadal/secular scale. Stake measurements and firn cores at Dome C confirm an approximate 30% increase in accumulation over the last two centuries, with respect to the average over the last 5000 years. Published 113-124 3.8. Geofisica per l'ambiente JCR Journal reserved Article in Journal/Newspaper Antarc* Antarctica East Antarctica ice core Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) East Antarctica Terra Nova Bay Journal of Glaciology 51 172 113 124 |