A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions
The quantitative assessment of glacier changes as well as improved modeling of climatechange impacts on glaciers requires digital vector outlines of individual glacier entities. Unfortunately, such a glacier inventory is still lacking in many remote but extensively glacierized regions such as the Ca...
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International Glaciological Society
2009
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ftunivzuerich:oai:www.zora.uzh.ch:29221 2024-06-23T07:45:37+00:00 A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions Svoboda, F Paul, F 2009 application/pdf https://www.zora.uzh.ch/id/eprint/29221/ https://www.zora.uzh.ch/id/eprint/29221/8/Paul_Svoboda_A_new_glacier_data_I_2009.pdf https://doi.org/10.5167/uzh-29221 https://doi.org/10.3189/172756410790595912 eng eng International Glaciological Society https://www.zora.uzh.ch/id/eprint/29221/8/Paul_Svoboda_A_new_glacier_data_I_2009.pdf doi:10.5167/uzh-29221 doi:10.3189/172756410790595912 urn:issn:0260-3055 info:eu-repo/semantics/openAccess Svoboda, F; Paul, F (2009). A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions. Annals of Glaciology, 50(53):11-21. Institute of Geography 910 Geography & travel Journal Article PeerReviewed info:eu-repo/semantics/article 2009 ftunivzuerich https://doi.org/10.5167/uzh-2922110.3189/172756410790595912 2024-06-05T00:20:45Z The quantitative assessment of glacier changes as well as improved modeling of climatechange impacts on glaciers requires digital vector outlines of individual glacier entities. Unfortunately, such a glacier inventory is still lacking in many remote but extensively glacierized regions such as the Canadian Arctic. Multispectral satellite data in combination with digital elevation models (DEMs) are particularly useful for creating detailed glacier inventory data including topographic information for each entity. In this study, we extracted glacier outlines and a DEM using two adjacent Terra ASTER scenes acquired in August 2000 for a remote region on southern Baffin Island, Canada. Additionally, Little Ice Age (LIA) extents were digitized from trimlines and moraines visible on the ASTER scenes, and Landsat MSS and TM scenes from the years 1975 and 1990 were used to assess changes in glacier length and area. Because automated delineation of glaciers is based on a band in the shortwave infrared, we have developed a new semi-automated glacier-mapping approach for the MSS sensor. Wrongly classified debris-covered glaciers, water bodies and attached snowfields were corrected manually for both ASTER and MSS. Glacier drainage divides were manually digitized by combining visual interpretation with DEM information. In this first paper, we describe the applied methods for glacier mapping and the glaciological challenges encountered (e.g. data voids, snow cover, ice caps, tributaries), while the second paper reports the data analyses and the derived changes. Article in Journal/Newspaper Annals of Glaciology Arctic Baffin Island Baffin glacier* University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Arctic Baffin Island Canada New Glacier ENVELOPE(162.400,162.400,-77.033,-77.033) |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Geography 910 Geography & travel |
spellingShingle |
Institute of Geography 910 Geography & travel Svoboda, F Paul, F A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions |
topic_facet |
Institute of Geography 910 Geography & travel |
description |
The quantitative assessment of glacier changes as well as improved modeling of climatechange impacts on glaciers requires digital vector outlines of individual glacier entities. Unfortunately, such a glacier inventory is still lacking in many remote but extensively glacierized regions such as the Canadian Arctic. Multispectral satellite data in combination with digital elevation models (DEMs) are particularly useful for creating detailed glacier inventory data including topographic information for each entity. In this study, we extracted glacier outlines and a DEM using two adjacent Terra ASTER scenes acquired in August 2000 for a remote region on southern Baffin Island, Canada. Additionally, Little Ice Age (LIA) extents were digitized from trimlines and moraines visible on the ASTER scenes, and Landsat MSS and TM scenes from the years 1975 and 1990 were used to assess changes in glacier length and area. Because automated delineation of glaciers is based on a band in the shortwave infrared, we have developed a new semi-automated glacier-mapping approach for the MSS sensor. Wrongly classified debris-covered glaciers, water bodies and attached snowfields were corrected manually for both ASTER and MSS. Glacier drainage divides were manually digitized by combining visual interpretation with DEM information. In this first paper, we describe the applied methods for glacier mapping and the glaciological challenges encountered (e.g. data voids, snow cover, ice caps, tributaries), while the second paper reports the data analyses and the derived changes. |
format |
Article in Journal/Newspaper |
author |
Svoboda, F Paul, F |
author_facet |
Svoboda, F Paul, F |
author_sort |
Svoboda, F |
title |
A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions |
title_short |
A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions |
title_full |
A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions |
title_fullStr |
A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions |
title_full_unstemmed |
A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions |
title_sort |
new glacier inventory on southern baffin island, canada, from aster data: i. applied methods, challenges and solutions |
publisher |
International Glaciological Society |
publishDate |
2009 |
url |
https://www.zora.uzh.ch/id/eprint/29221/ https://www.zora.uzh.ch/id/eprint/29221/8/Paul_Svoboda_A_new_glacier_data_I_2009.pdf https://doi.org/10.5167/uzh-29221 https://doi.org/10.3189/172756410790595912 |
long_lat |
ENVELOPE(162.400,162.400,-77.033,-77.033) |
geographic |
Arctic Baffin Island Canada New Glacier |
geographic_facet |
Arctic Baffin Island Canada New Glacier |
genre |
Annals of Glaciology Arctic Baffin Island Baffin glacier* |
genre_facet |
Annals of Glaciology Arctic Baffin Island Baffin glacier* |
op_source |
Svoboda, F; Paul, F (2009). A new glacier inventory on southern Baffin Island, Canada, from ASTER data: I. Applied methods, challenges and solutions. Annals of Glaciology, 50(53):11-21. |
op_relation |
https://www.zora.uzh.ch/id/eprint/29221/8/Paul_Svoboda_A_new_glacier_data_I_2009.pdf doi:10.5167/uzh-29221 doi:10.3189/172756410790595912 urn:issn:0260-3055 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5167/uzh-2922110.3189/172756410790595912 |
_version_ |
1802641574224461824 |