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...
Published in: | Frontiers in Earth Science |
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Language: | English |
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Humboldt-Universität zu Berlin
2021
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Online Access: | http://edoc.hu-berlin.de/18452/24010 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/24010-7 https://doi.org/10.3389/feart.2021.689941 https://doi.org/10.18452/23359 |
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fthuberlin:oai:edoc.hu-berlin.de:18452/24010 2023-12-03T10:18:19+01:00 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 2021-07-06 application/pdf http://edoc.hu-berlin.de/18452/24010 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/24010-7 https://doi.org/10.3389/feart.2021.689941 https://doi.org/10.18452/23359 eng eng Humboldt-Universität zu Berlin http://edoc.hu-berlin.de/18452/24010 urn:nbn:de:kobv:11-110-18452/24010-7 doi:10.3389/feart.2021.689941 http://dx.doi.org/10.18452/23359 2296-6463 (CC BY 4.0) Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ river ice lena river delta remote sensing geophysics permafrost hydrology navigation cryosphere 550 Geowissenschaften ddc:550 article doc-type:article 2021 fthuberlin https://doi.org/10.3389/feart.2021.68994110.18452/23359 2023-11-05T23:36:51Z 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 Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server Arctic Snow River ENVELOPE(-102.368,-102.368,62.817,62.817) Frontiers in Earth Science 9 |
institution |
Open Polar |
collection |
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server |
op_collection_id |
fthuberlin |
language |
English |
topic |
river ice lena river delta remote sensing geophysics permafrost hydrology navigation cryosphere 550 Geowissenschaften ddc:550 |
spellingShingle |
river ice lena river delta remote sensing geophysics permafrost hydrology navigation cryosphere 550 Geowissenschaften ddc:550 Juhls, Bennet Antonova, Sofia Angelopoulos, Michael Bobrov, Nikita Grigoriev, Mikhail Langer, Moritz Maksimov, Georgii Miesner, Frederieke Overduin, Pier Serpentine (Floating) Ice Channels and their Interaction with Riverbed Permafrost in the Lena River Delta, Russia |
topic_facet |
river ice lena river delta remote sensing geophysics permafrost hydrology navigation cryosphere 550 Geowissenschaften ddc:550 |
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 |
author_facet |
Juhls, Bennet Antonova, Sofia Angelopoulos, Michael Bobrov, Nikita Grigoriev, Mikhail Langer, Moritz Maksimov, Georgii Miesner, Frederieke Overduin, Pier |
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 |
Humboldt-Universität zu Berlin |
publishDate |
2021 |
url |
http://edoc.hu-berlin.de/18452/24010 https://nbn-resolving.org/urn:nbn:de:kobv:11-110-18452/24010-7 https://doi.org/10.3389/feart.2021.689941 https://doi.org/10.18452/23359 |
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_relation |
http://edoc.hu-berlin.de/18452/24010 urn:nbn:de:kobv:11-110-18452/24010-7 doi:10.3389/feart.2021.689941 http://dx.doi.org/10.18452/23359 2296-6463 |
op_rights |
(CC BY 4.0) Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2021.68994110.18452/23359 |
container_title |
Frontiers in Earth Science |
container_volume |
9 |
_version_ |
1784265287975043072 |