Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping
Snow depth has traditionally been estimated based on point measurements collected either manually or at automated weather stations. Point measurements, though, do not represent the high spatial variability in snow depths present in alpine terrain. Photogrammetric mapping techniques have progressed i...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/462795 2023-08-20T04:10:08+02:00 Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping Eberhard, Lucie A. Sirguey, Pascal Miller, Aubrey Marty, Mauro Schindler, Konrad Stoffel, Andreas Bühler, Yves 2021 application/application/pdf https://hdl.handle.net/20.500.11850/462795 https://doi.org/10.3929/ethz-b-000462795 en eng Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-15-69-2021 info:eu-repo/semantics/altIdentifier/wos/000606793200003 http://hdl.handle.net/20.500.11850/462795 doi:10.3929/ethz-b-000462795 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International The Cryosphere, 15 (1) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftethz https://doi.org/20.500.11850/46279510.3929/ethz-b-00046279510.5194/tc-15-69-2021 2023-07-30T23:53:05Z Snow depth has traditionally been estimated based on point measurements collected either manually or at automated weather stations. Point measurements, though, do not represent the high spatial variability in snow depths present in alpine terrain. Photogrammetric mapping techniques have progressed in recent years and are capable of accurately mapping snow depth in a spatially continuous manner, over larger areas and at various spatial resolutions. However, the strengths and weaknesses associated with specific platforms and photogrammetric techniques as well as the accuracy of the photogrammetric performance on snow surfaces have not yet been sufficiently investigated. Therefore, industry-standard photogrammetric platforms, including high-resolution satellite (Pléiades), airplane (Ultracam Eagle M3), unmanned aerial system (eBee+ RTK with SenseFly S.O.D.A. camera) and terrestrial (single lens reflex camera, Canon EOS 750D) platforms, were tested for snow depth mapping in the alpine Dischma valley (Switzerland) in spring 2018. Imagery was acquired with airborne and space-borne platforms over the entire valley, while unmanned aerial system (UAS) and terrestrial photogrammetric imagery was acquired over a subset of the valley. For independent validation of the photogrammetric products, snow depth was measured by probing as well as by using remote observations of fixed snow poles. When comparing snow depth maps with manual and snow pole measurements, the root mean square error (RMSE) values and the normalized median absolute deviation (NMAD) values were 0.52 and 0.47 m, respectively, for the satellite snow depth map, 0.17 and 0.17 m for the airplane snow depth map, and 0.16 and 0.11 m for the UAS snow depth map. The area covered by the terrestrial snow depth map only intersected with four manual measurements and did not generate statistically relevant measurements. When using the UAS snow depth map as a reference surface, the RMSE and NMAD values were 0.44 and 0.38 m for the satellite snow depth map, 0.12 and 0.11 m ... Article in Journal/Newspaper The Cryosphere ETH Zürich Research Collection |
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Open Polar |
collection |
ETH Zürich Research Collection |
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ftethz |
language |
English |
description |
Snow depth has traditionally been estimated based on point measurements collected either manually or at automated weather stations. Point measurements, though, do not represent the high spatial variability in snow depths present in alpine terrain. Photogrammetric mapping techniques have progressed in recent years and are capable of accurately mapping snow depth in a spatially continuous manner, over larger areas and at various spatial resolutions. However, the strengths and weaknesses associated with specific platforms and photogrammetric techniques as well as the accuracy of the photogrammetric performance on snow surfaces have not yet been sufficiently investigated. Therefore, industry-standard photogrammetric platforms, including high-resolution satellite (Pléiades), airplane (Ultracam Eagle M3), unmanned aerial system (eBee+ RTK with SenseFly S.O.D.A. camera) and terrestrial (single lens reflex camera, Canon EOS 750D) platforms, were tested for snow depth mapping in the alpine Dischma valley (Switzerland) in spring 2018. Imagery was acquired with airborne and space-borne platforms over the entire valley, while unmanned aerial system (UAS) and terrestrial photogrammetric imagery was acquired over a subset of the valley. For independent validation of the photogrammetric products, snow depth was measured by probing as well as by using remote observations of fixed snow poles. When comparing snow depth maps with manual and snow pole measurements, the root mean square error (RMSE) values and the normalized median absolute deviation (NMAD) values were 0.52 and 0.47 m, respectively, for the satellite snow depth map, 0.17 and 0.17 m for the airplane snow depth map, and 0.16 and 0.11 m for the UAS snow depth map. The area covered by the terrestrial snow depth map only intersected with four manual measurements and did not generate statistically relevant measurements. When using the UAS snow depth map as a reference surface, the RMSE and NMAD values were 0.44 and 0.38 m for the satellite snow depth map, 0.12 and 0.11 m ... |
format |
Article in Journal/Newspaper |
author |
Eberhard, Lucie A. Sirguey, Pascal Miller, Aubrey Marty, Mauro Schindler, Konrad Stoffel, Andreas Bühler, Yves |
spellingShingle |
Eberhard, Lucie A. Sirguey, Pascal Miller, Aubrey Marty, Mauro Schindler, Konrad Stoffel, Andreas Bühler, Yves Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
author_facet |
Eberhard, Lucie A. Sirguey, Pascal Miller, Aubrey Marty, Mauro Schindler, Konrad Stoffel, Andreas Bühler, Yves |
author_sort |
Eberhard, Lucie A. |
title |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_short |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_full |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_fullStr |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_full_unstemmed |
Intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
title_sort |
intercomparison of photogrammetric platforms for spatially continuous snow depth mapping |
publisher |
Copernicus |
publishDate |
2021 |
url |
https://hdl.handle.net/20.500.11850/462795 https://doi.org/10.3929/ethz-b-000462795 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, 15 (1) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-15-69-2021 info:eu-repo/semantics/altIdentifier/wos/000606793200003 http://hdl.handle.net/20.500.11850/462795 doi:10.3929/ethz-b-000462795 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_doi |
https://doi.org/20.500.11850/46279510.3929/ethz-b-00046279510.5194/tc-15-69-2021 |
_version_ |
1774724104618770432 |