Determination of glacier velocities at a large spatial scale from optical satellite archives
International audience In this paper we present a processing strategy to derive glaciers' velocity fields from a complete satellite archive. All possible pairs with a specified time span are formed, submitted to the same preprocessing and matched together to derive velocity fields. All the resu...
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ftunivsavoie:oai:HAL:hal-01154179v1 2024-04-28T08:20:18+00:00 Determination of glacier velocities at a large spatial scale from optical satellite archives Dehecq, Amaury Trouvé, Emmanuel Gourmelen, Noel Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance (LISTIC) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry ) School of Geosciences Edinburgh University of Edinburgh (Edin.) Quebec, Canada 2014-07-13 https://hal.science/hal-01154179 https://doi.org/10.1109/IGARSS.2014.6947366 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1109/IGARSS.2014.6947366 hal-01154179 https://hal.science/hal-01154179 doi:10.1109/IGARSS.2014.6947366 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) https://hal.science/hal-01154179 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Jul 2014, Quebec, Canada. ⟨10.1109/IGARSS.2014.6947366⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/conferenceObject Conference papers 2014 ftunivsavoie https://doi.org/10.1109/IGARSS.2014.6947366 2024-04-11T01:02:23Z International audience In this paper we present a processing strategy to derive glaciers' velocity fields from a complete satellite archive. All possible pairs with a specified time span are formed, submitted to the same preprocessing and matched together to derive velocity fields. All the results are then selected on a pixel-by-pixel basis based on the confidence of the offset-tracking and merged together by computing the median in a spatio-temporal neighboorhood. The method is applied to 206 images covering the Karakoram region and a period of 3 years. This allows us to estimate a velocity for over 90% of the glaciers' area and to reduce the residuals from 9.9m/yr to 2.1m/yr. Conference Object glacier* Université Savoie Mont Blanc: HAL 2014 IEEE Geoscience and Remote Sensing Symposium 4014 4017 |
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Université Savoie Mont Blanc: HAL |
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English |
topic |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
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[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Dehecq, Amaury Trouvé, Emmanuel Gourmelen, Noel Determination of glacier velocities at a large spatial scale from optical satellite archives |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience In this paper we present a processing strategy to derive glaciers' velocity fields from a complete satellite archive. All possible pairs with a specified time span are formed, submitted to the same preprocessing and matched together to derive velocity fields. All the results are then selected on a pixel-by-pixel basis based on the confidence of the offset-tracking and merged together by computing the median in a spatio-temporal neighboorhood. The method is applied to 206 images covering the Karakoram region and a period of 3 years. This allows us to estimate a velocity for over 90% of the glaciers' area and to reduce the residuals from 9.9m/yr to 2.1m/yr. |
author2 |
Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance (LISTIC) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry ) School of Geosciences Edinburgh University of Edinburgh (Edin.) |
format |
Conference Object |
author |
Dehecq, Amaury Trouvé, Emmanuel Gourmelen, Noel |
author_facet |
Dehecq, Amaury Trouvé, Emmanuel Gourmelen, Noel |
author_sort |
Dehecq, Amaury |
title |
Determination of glacier velocities at a large spatial scale from optical satellite archives |
title_short |
Determination of glacier velocities at a large spatial scale from optical satellite archives |
title_full |
Determination of glacier velocities at a large spatial scale from optical satellite archives |
title_fullStr |
Determination of glacier velocities at a large spatial scale from optical satellite archives |
title_full_unstemmed |
Determination of glacier velocities at a large spatial scale from optical satellite archives |
title_sort |
determination of glacier velocities at a large spatial scale from optical satellite archives |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01154179 https://doi.org/10.1109/IGARSS.2014.6947366 |
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Quebec, Canada |
genre |
glacier* |
genre_facet |
glacier* |
op_source |
IEEE International Geoscience and Remote Sensing Symposium (IGARSS) https://hal.science/hal-01154179 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Jul 2014, Quebec, Canada. ⟨10.1109/IGARSS.2014.6947366⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1109/IGARSS.2014.6947366 hal-01154179 https://hal.science/hal-01154179 doi:10.1109/IGARSS.2014.6947366 |
op_doi |
https://doi.org/10.1109/IGARSS.2014.6947366 |
container_title |
2014 IEEE Geoscience and Remote Sensing Symposium |
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4014 |
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4017 |
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