Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria
Little is known about the evolution and dynamics of icebergs in alpine lakes. We analyzed the movement and ablation patterns of icebergs at an ice-contact lake at Pasterze Glacier, Austria, using time-lapse images. Iceberg evolution was quantified for two timescales and related to meteorological as...
Published in: | Arctic, Antarctic, and Alpine Research |
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2024
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Online Access: | https://doi.org/10.1080/15230430.2024.2367778 https://doaj.org/article/9e9346e2ac7e48eca234c71cab8bec09 |
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ftdoajarticles:oai:doaj.org/article:9e9346e2ac7e48eca234c71cab8bec09 2024-09-15T17:49:02+00:00 Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria Felix Bernsteiner Andreas Kellerer-Pirklbauer Jakob Abermann Bernhard Hynek 2024-12-01T00:00:00Z https://doi.org/10.1080/15230430.2024.2367778 https://doaj.org/article/9e9346e2ac7e48eca234c71cab8bec09 EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2024.2367778 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2024.2367778 1938-4246 1523-0430 https://doaj.org/article/9e9346e2ac7e48eca234c71cab8bec09 Arctic, Antarctic, and Alpine Research, Vol 56, Iss 1 (2024) Iceberg tracking iceberg melt iceberg ablation iceberg decay iceberg–climate relationship mountain–valley wind system Environmental sciences GE1-350 Ecology QH540-549.5 article 2024 ftdoajarticles https://doi.org/10.1080/15230430.2024.2367778 2024-08-05T17:48:48Z Little is known about the evolution and dynamics of icebergs in alpine lakes. We analyzed the movement and ablation patterns of icebergs at an ice-contact lake at Pasterze Glacier, Austria, using time-lapse images. Iceberg evolution was quantified for two timescales and related to meteorological as well as glacier ablation data from the adjacent glacier tongue. On a multiyear scale, ablation and movement of one iceberg (IB1) was monitored during a twenty-five-month period. On a single-day scale, the movement paths of eighty-four icebergs were tracked over 16 hours. Results for IB1 revealed an average iceberg ablation of 72 mm d−1 from June to September and no winter ablation. Iceberg ablation rates rose over time, explained by a rising surface area-to-volume ratio. Monitoring lake-wide iceberg movement for one day shows that a persistent katabatic glacier wind and a valley wind are the main influences on horizontal iceberg movement. Iceberg velocity is roughly 0.6 percent of the wind velocity. The existence of a wind-driven current on the lake surface is proposed. Sudden changes in movement rates, which are not explained by wind data, suggest that iceberg grounding is common. This study provides insight into iceberg melt rates in the absence of wave erosion. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Directory of Open Access Journals: DOAJ Articles Arctic, Antarctic, and Alpine Research 56 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Iceberg tracking iceberg melt iceberg ablation iceberg decay iceberg–climate relationship mountain–valley wind system Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Iceberg tracking iceberg melt iceberg ablation iceberg decay iceberg–climate relationship mountain–valley wind system Environmental sciences GE1-350 Ecology QH540-549.5 Felix Bernsteiner Andreas Kellerer-Pirklbauer Jakob Abermann Bernhard Hynek Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria |
topic_facet |
Iceberg tracking iceberg melt iceberg ablation iceberg decay iceberg–climate relationship mountain–valley wind system Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Little is known about the evolution and dynamics of icebergs in alpine lakes. We analyzed the movement and ablation patterns of icebergs at an ice-contact lake at Pasterze Glacier, Austria, using time-lapse images. Iceberg evolution was quantified for two timescales and related to meteorological as well as glacier ablation data from the adjacent glacier tongue. On a multiyear scale, ablation and movement of one iceberg (IB1) was monitored during a twenty-five-month period. On a single-day scale, the movement paths of eighty-four icebergs were tracked over 16 hours. Results for IB1 revealed an average iceberg ablation of 72 mm d−1 from June to September and no winter ablation. Iceberg ablation rates rose over time, explained by a rising surface area-to-volume ratio. Monitoring lake-wide iceberg movement for one day shows that a persistent katabatic glacier wind and a valley wind are the main influences on horizontal iceberg movement. Iceberg velocity is roughly 0.6 percent of the wind velocity. The existence of a wind-driven current on the lake surface is proposed. Sudden changes in movement rates, which are not explained by wind data, suggest that iceberg grounding is common. This study provides insight into iceberg melt rates in the absence of wave erosion. |
format |
Article in Journal/Newspaper |
author |
Felix Bernsteiner Andreas Kellerer-Pirklbauer Jakob Abermann Bernhard Hynek |
author_facet |
Felix Bernsteiner Andreas Kellerer-Pirklbauer Jakob Abermann Bernhard Hynek |
author_sort |
Felix Bernsteiner |
title |
Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria |
title_short |
Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria |
title_full |
Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria |
title_fullStr |
Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria |
title_full_unstemmed |
Tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in Austria |
title_sort |
tracking ablation and movement of icebergs with time-lapse photography at an alpine proglacial lake in austria |
publisher |
Taylor & Francis Group |
publishDate |
2024 |
url |
https://doi.org/10.1080/15230430.2024.2367778 https://doaj.org/article/9e9346e2ac7e48eca234c71cab8bec09 |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 56, Iss 1 (2024) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2024.2367778 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2024.2367778 1938-4246 1523-0430 https://doaj.org/article/9e9346e2ac7e48eca234c71cab8bec09 |
op_doi |
https://doi.org/10.1080/15230430.2024.2367778 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
56 |
container_issue |
1 |
_version_ |
1810290742930702336 |