Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula
This study presents the first geochemical and petrophysical data on the composition of the bedload sediments transported by the Algal and Bohemian Stream, and the latter’s prominent tributary: the Dirty Stream. The catchments of these rivers are partially glacierised, with only 2% and 6% ice cover i...
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Masaryk University Press
2022
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Online Access: | http://dx.doi.org/10.5817/cpr2021-2-14 https://journals.muni.cz/CPR/article/download/20750/16597 |
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crmasarykunivpr:10.5817/cpr2021-2-14 2024-06-23T07:47:32+00:00 Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula Sroková, Simona Nývlt, Daniel 2022 http://dx.doi.org/10.5817/cpr2021-2-14 https://journals.muni.cz/CPR/article/download/20750/16597 unknown Masaryk University Press Czech Polar Reports volume 11, issue 2, page 203-214 ISSN 1805-0697 1805-0689 journal-article 2022 crmasarykunivpr https://doi.org/10.5817/cpr2021-2-14 2024-05-30T08:19:59Z This study presents the first geochemical and petrophysical data on the composition of the bedload sediments transported by the Algal and Bohemian Stream, and the latter’s prominent tributary: the Dirty Stream. The catchments of these rivers are partially glacierised, with only 2% and 6% ice cover in the Algal and Bohemian stream catchments, respectively. Therefore, the primary sources of liquid water to these rivers are snowmelt and active layer thawing. This study shows that the Cretaceous marine sedimentary rocks deposited in the back-arc James Ross Basin, which underlies the studied rivers, represent the main constituent of fluvial bedload. This is in contrast to suspended sediment loads, whose composition is a mixture of volcanic rocks from the surrounding James Ross Island Volcanic Group. This also suggests that bedload is only transported for a distance of few hundreds of metres, while suspended sediment load is transported throughout the Algal and Bohemian streams to the sea. It is anticipated that this work will serve as the source of data for further studies from fluvial geomorphology to river ecology. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island Munipress - Masaryk University Press Antarctic Antarctic Peninsula Ross Island Czech Polar Reports 11 2 203 214 |
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Open Polar |
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Munipress - Masaryk University Press |
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crmasarykunivpr |
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unknown |
description |
This study presents the first geochemical and petrophysical data on the composition of the bedload sediments transported by the Algal and Bohemian Stream, and the latter’s prominent tributary: the Dirty Stream. The catchments of these rivers are partially glacierised, with only 2% and 6% ice cover in the Algal and Bohemian stream catchments, respectively. Therefore, the primary sources of liquid water to these rivers are snowmelt and active layer thawing. This study shows that the Cretaceous marine sedimentary rocks deposited in the back-arc James Ross Basin, which underlies the studied rivers, represent the main constituent of fluvial bedload. This is in contrast to suspended sediment loads, whose composition is a mixture of volcanic rocks from the surrounding James Ross Island Volcanic Group. This also suggests that bedload is only transported for a distance of few hundreds of metres, while suspended sediment load is transported throughout the Algal and Bohemian streams to the sea. It is anticipated that this work will serve as the source of data for further studies from fluvial geomorphology to river ecology. |
format |
Article in Journal/Newspaper |
author |
Sroková, Simona Nývlt, Daniel |
spellingShingle |
Sroková, Simona Nývlt, Daniel Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula |
author_facet |
Sroková, Simona Nývlt, Daniel |
author_sort |
Sroková, Simona |
title |
Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula |
title_short |
Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula |
title_full |
Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula |
title_fullStr |
Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula |
title_full_unstemmed |
Bedload geochemical and petrophysical signature of the Algal and Bohemian streams, James Ross Island, Antarctic Peninsula |
title_sort |
bedload geochemical and petrophysical signature of the algal and bohemian streams, james ross island, antarctic peninsula |
publisher |
Masaryk University Press |
publishDate |
2022 |
url |
http://dx.doi.org/10.5817/cpr2021-2-14 https://journals.muni.cz/CPR/article/download/20750/16597 |
geographic |
Antarctic Antarctic Peninsula Ross Island |
geographic_facet |
Antarctic Antarctic Peninsula Ross Island |
genre |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island |
op_source |
Czech Polar Reports volume 11, issue 2, page 203-214 ISSN 1805-0697 1805-0689 |
op_doi |
https://doi.org/10.5817/cpr2021-2-14 |
container_title |
Czech Polar Reports |
container_volume |
11 |
container_issue |
2 |
container_start_page |
203 |
op_container_end_page |
214 |
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1802651656212447232 |