Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches
This study presents surface mass balance of two small glaciers on James Ross Island calculated using constant and zonally-variable conversion factors. The density of 500 and 900 kg·m–3 adopted for snow in the accumulation area and ice in the ablation area, respectively, provides lower mass balance v...
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Online Access: | http://dx.doi.org/10.5817/cpr2019-1-1 https://journals.muni.cz/CPR/article/viewFile/12936/11288 |
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crmasarykunivpr:10.5817/cpr2019-1-1 2024-05-19T07:29:16+00:00 Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches Engel, Zbyněk Hrbáček, Filip Láska, Kamil Nývlt, Daniel Stachoň, Zdeněk 2019 http://dx.doi.org/10.5817/cpr2019-1-1 https://journals.muni.cz/CPR/article/viewFile/12936/11288 unknown Masaryk University Press http://creativecommons.org/licenses/by-nc-nd/4.0 Czech Polar Reports volume 9, issue 1, page 1-12 ISSN 1805-0697 1805-0689 journal-article 2019 crmasarykunivpr https://doi.org/10.5817/cpr2019-1-1 2024-04-30T06:41:26Z This study presents surface mass balance of two small glaciers on James Ross Island calculated using constant and zonally-variable conversion factors. The density of 500 and 900 kg·m–3 adopted for snow in the accumulation area and ice in the ablation area, respectively, provides lower mass balance values that better fit to the glaciological records from glaciers on Vega Island and South Shetland Islands. The difference between the cumulative surface mass balance values based on constant (1.23 ± 0.44 m w.e.) and zonally-variable density (0.57 ± 0.67 m w.e.) is higher for Whisky Glacier where a total mass gain was observed over the period 2009–2015. The cumulative surface mass balance values are 0.46 ± 0.36 and 0.11 ± 0.37 m w.e. for Davies Dome, which experienced lower mass gain over the same period. The conversion approach does not affect much the spatial distribution of surface mass balance on glaciers, equilibrium line altitude and accumulation-area ratio. The pattern of the surface mass balance is almost identical in the ablation zone and very similar in the accumulation zone, where the constant conversion factor yields higher surface mass balance values. The equilibrium line altitude and accumulation-area ratio determined for the investigated glaciers differ by less than 2m and 0.01, respectively. The annual changes of equilibrium line altitude and the mean values determined over the period 2009–2015 for Whisky Glacier (311 ± 16 m a.s.l.) and Davies Dome (393 ± 18 m a.s.l.) coincide with the values reported from Bahía del Diablo Glacier on Vega Island but differ from the glaciological records on South Shetland Islands. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island South Shetland Islands Vega Island Munipress - Masaryk University Press Czech Polar Reports 9 1 1 12 |
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crmasarykunivpr |
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description |
This study presents surface mass balance of two small glaciers on James Ross Island calculated using constant and zonally-variable conversion factors. The density of 500 and 900 kg·m–3 adopted for snow in the accumulation area and ice in the ablation area, respectively, provides lower mass balance values that better fit to the glaciological records from glaciers on Vega Island and South Shetland Islands. The difference between the cumulative surface mass balance values based on constant (1.23 ± 0.44 m w.e.) and zonally-variable density (0.57 ± 0.67 m w.e.) is higher for Whisky Glacier where a total mass gain was observed over the period 2009–2015. The cumulative surface mass balance values are 0.46 ± 0.36 and 0.11 ± 0.37 m w.e. for Davies Dome, which experienced lower mass gain over the same period. The conversion approach does not affect much the spatial distribution of surface mass balance on glaciers, equilibrium line altitude and accumulation-area ratio. The pattern of the surface mass balance is almost identical in the ablation zone and very similar in the accumulation zone, where the constant conversion factor yields higher surface mass balance values. The equilibrium line altitude and accumulation-area ratio determined for the investigated glaciers differ by less than 2m and 0.01, respectively. The annual changes of equilibrium line altitude and the mean values determined over the period 2009–2015 for Whisky Glacier (311 ± 16 m a.s.l.) and Davies Dome (393 ± 18 m a.s.l.) coincide with the values reported from Bahía del Diablo Glacier on Vega Island but differ from the glaciological records on South Shetland Islands. |
format |
Article in Journal/Newspaper |
author |
Engel, Zbyněk Hrbáček, Filip Láska, Kamil Nývlt, Daniel Stachoň, Zdeněk |
spellingShingle |
Engel, Zbyněk Hrbáček, Filip Láska, Kamil Nývlt, Daniel Stachoň, Zdeněk Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches |
author_facet |
Engel, Zbyněk Hrbáček, Filip Láska, Kamil Nývlt, Daniel Stachoň, Zdeněk |
author_sort |
Engel, Zbyněk |
title |
Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches |
title_short |
Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches |
title_full |
Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches |
title_fullStr |
Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches |
title_full_unstemmed |
Surface mass balance of Davies Dome and Whisky Glacier on James Ross Island, north-eastern Antarctic Peninsula, based on different volume-mass conversion approaches |
title_sort |
surface mass balance of davies dome and whisky glacier on james ross island, north-eastern antarctic peninsula, based on different volume-mass conversion approaches |
publisher |
Masaryk University Press |
publishDate |
2019 |
url |
http://dx.doi.org/10.5817/cpr2019-1-1 https://journals.muni.cz/CPR/article/viewFile/12936/11288 |
genre |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island South Shetland Islands Vega Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island South Shetland Islands Vega Island |
op_source |
Czech Polar Reports volume 9, issue 1, page 1-12 ISSN 1805-0697 1805-0689 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0 |
op_doi |
https://doi.org/10.5817/cpr2019-1-1 |
container_title |
Czech Polar Reports |
container_volume |
9 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
12 |
_version_ |
1799478401592983552 |