Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia
Arctic deltas and their river channels are characterized by three components of the cryosphere: snow, river ice, and permafrost, making them especially sensitive to ongoing climate change. Thinning river ice and rising river water temperatures may affect the thermal state of permafrost beneath the r...
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Online Access: | http://dx.doi.org/10.3389/feart.2021.689941 https://www.frontiersin.org/articles/10.3389/feart.2021.689941/full |
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crfrontiers:10.3389/feart.2021.689941 2024-06-23T07:50:37+00:00 Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia Juhls, Bennet Antonova, Sofia Angelopoulos, Michael Bobrov, Nikita Grigoriev, Mikhail Langer, Moritz Maksimov, Georgii Miesner, Frederieke Overduin, Pier Paul 2021 http://dx.doi.org/10.3389/feart.2021.689941 https://www.frontiersin.org/articles/10.3389/feart.2021.689941/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 9 ISSN 2296-6463 journal-article 2021 crfrontiers https://doi.org/10.3389/feart.2021.689941 2024-06-11T04:08:27Z Arctic deltas and their river channels are characterized by three components of the cryosphere: snow, river ice, and permafrost, making them especially sensitive to ongoing climate change. Thinning river ice and rising river water temperatures may affect the thermal state of permafrost beneath the riverbed, with consequences for delta hydrology, erosion, and sediment transport. In this study, we use optical and radar remote sensing to map ice frozen to the riverbed (bedfast ice) vs. ice, resting on top of the unfrozen water layer (floating or so-called serpentine ice) within the Arctic’s largest delta, the Lena River Delta. The optical data is used to differentiate elevated floating ice from bedfast ice, which is flooded ice during the spring melt, while radar data is used to differentiate floating from bedfast ice during the winter months. We use numerical modeling and geophysical field surveys to investigate the temperature field and sediment properties beneath the riverbed. Our results show that the serpentine ice identified with both types of remote sensing spatially coincides with the location of thawed riverbed sediment observed with in situ geoelectrical measurements and as simulated with the thermal model. Besides insight into sub-river thermal properties, our study shows the potential of remote sensing for identifying river channels with active sub-ice flow during winter vs. channels, presumably disconnected for winter water flow. Furthermore, our results provide viable information for the summer navigation for shallow-draught vessels. Article in Journal/Newspaper Arctic Climate change Ice lena river permafrost Frontiers (Publisher) Arctic Snow River ENVELOPE(-102.368,-102.368,62.817,62.817) Frontiers in Earth Science 9 |
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Open Polar |
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Frontiers (Publisher) |
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crfrontiers |
language |
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description |
Arctic deltas and their river channels are characterized by three components of the cryosphere: snow, river ice, and permafrost, making them especially sensitive to ongoing climate change. Thinning river ice and rising river water temperatures may affect the thermal state of permafrost beneath the riverbed, with consequences for delta hydrology, erosion, and sediment transport. In this study, we use optical and radar remote sensing to map ice frozen to the riverbed (bedfast ice) vs. ice, resting on top of the unfrozen water layer (floating or so-called serpentine ice) within the Arctic’s largest delta, the Lena River Delta. The optical data is used to differentiate elevated floating ice from bedfast ice, which is flooded ice during the spring melt, while radar data is used to differentiate floating from bedfast ice during the winter months. We use numerical modeling and geophysical field surveys to investigate the temperature field and sediment properties beneath the riverbed. Our results show that the serpentine ice identified with both types of remote sensing spatially coincides with the location of thawed riverbed sediment observed with in situ geoelectrical measurements and as simulated with the thermal model. Besides insight into sub-river thermal properties, our study shows the potential of remote sensing for identifying river channels with active sub-ice flow during winter vs. channels, presumably disconnected for winter water flow. Furthermore, our results provide viable information for the summer navigation for shallow-draught vessels. |
format |
Article in Journal/Newspaper |
author |
Juhls, Bennet Antonova, Sofia Angelopoulos, Michael Bobrov, Nikita Grigoriev, Mikhail Langer, Moritz Maksimov, Georgii Miesner, Frederieke Overduin, Pier Paul |
spellingShingle |
Juhls, Bennet Antonova, Sofia Angelopoulos, Michael Bobrov, Nikita Grigoriev, Mikhail Langer, Moritz Maksimov, Georgii Miesner, Frederieke Overduin, Pier Paul Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia |
author_facet |
Juhls, Bennet Antonova, Sofia Angelopoulos, Michael Bobrov, Nikita Grigoriev, Mikhail Langer, Moritz Maksimov, Georgii Miesner, Frederieke Overduin, Pier Paul |
author_sort |
Juhls, Bennet |
title |
Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia |
title_short |
Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia |
title_full |
Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia |
title_fullStr |
Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia |
title_full_unstemmed |
Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia |
title_sort |
serpentine (floating) ice channels and their interaction with riverbed permafrost in the lena river delta, russia |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/feart.2021.689941 https://www.frontiersin.org/articles/10.3389/feart.2021.689941/full |
long_lat |
ENVELOPE(-102.368,-102.368,62.817,62.817) |
geographic |
Arctic Snow River |
geographic_facet |
Arctic Snow River |
genre |
Arctic Climate change Ice lena river permafrost |
genre_facet |
Arctic Climate change Ice lena river permafrost |
op_source |
Frontiers in Earth Science volume 9 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2021.689941 |
container_title |
Frontiers in Earth Science |
container_volume |
9 |
_version_ |
1802641521070047232 |