Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling
Grain-size end-member (EM) modelling is a robust statistical approach for identifying and quantifying dominant grain-size distributions. This approach provides a novel perspective for understanding the impact of interactions between depositional processes in complex sedimentary environments. This st...
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Online Access: | https://hdl.handle.net/10037/33629 https://doi.org/10.1016/j.margeo.2024.107306 |
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ftunivtroemsoe:oai:munin.uit.no:10037/33629 2024-06-23T07:53:05+00:00 Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling Ahn, Youngkyu Joe, Young Jin Jang, Kwangchul Kim, Jung-Hyun Son, Yeong Ju Forwick, Matthias Hong, Sungmin Nam, Seung-Il 2024-05-11 https://hdl.handle.net/10037/33629 https://doi.org/10.1016/j.margeo.2024.107306 eng eng Elsevier Marine Geology Ahn Y, Joe YJ, Jang K, Kim J, Son YJ, Forwick M, Hong, Nam S. Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling. Marine Geology. 2024;472 FRIDAID 2269545 doi:10.1016/j.margeo.2024.107306 0025-3227 1872-6151 https://hdl.handle.net/10037/33629 openAccess Copyright 2024 The Author(s) Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2024 ftunivtroemsoe https://doi.org/10.1016/j.margeo.2024.107306 2024-05-29T00:47:55Z Grain-size end-member (EM) modelling is a robust statistical approach for identifying and quantifying dominant grain-size distributions. This approach provides a novel perspective for understanding the impact of interactions between depositional processes in complex sedimentary environments. This study examines grain-size distributions of six glacimarine sediment cores collected along an Nsingle bondS transect from the continental shelf to the Wijdefjorden system in northern Svalbard. In addition, we integrate grain-size EMs with lithologic and acoustic facies, allowing us to identify three distinct groups of EMs (EM1–3), each closely associated with specific depositional processes: turbid meltwater discharge (EM1), sediment winnowing by bottom currents (EM2), and the deposition of ice-rafted debris in glacimarine conditions and subglacial till (EM3). An analysis of the three EM groups reveals that the glacial retreat during the last deglaciation and the Atlantic Water inflow significantly impacted depositional changes within the Wijdefjorden system. In contrast, a decrease in the Atlantic Water inflow during the late Holocene corresponds to glacial re-advance, resulting in shifts in the depositional environment. This study demonstrates the utility of EM modelling in deciphering complex grain-size distributions and reconstructing different climate-driven depositional processes in glacimarine sediments in Svalbard fjords. This integrated approach enhances our understanding of the intricate interplay among climate change, glacier dynamics, and oceanic forcing in polar fjord environments Article in Journal/Newspaper glacier Svalbard Wijdefjord* University of Tromsø: Munin Open Research Archive Svalbard Wijdefjorden ENVELOPE(15.569,15.569,79.543,79.543) Marine Geology 472 107306 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Grain-size end-member (EM) modelling is a robust statistical approach for identifying and quantifying dominant grain-size distributions. This approach provides a novel perspective for understanding the impact of interactions between depositional processes in complex sedimentary environments. This study examines grain-size distributions of six glacimarine sediment cores collected along an Nsingle bondS transect from the continental shelf to the Wijdefjorden system in northern Svalbard. In addition, we integrate grain-size EMs with lithologic and acoustic facies, allowing us to identify three distinct groups of EMs (EM1–3), each closely associated with specific depositional processes: turbid meltwater discharge (EM1), sediment winnowing by bottom currents (EM2), and the deposition of ice-rafted debris in glacimarine conditions and subglacial till (EM3). An analysis of the three EM groups reveals that the glacial retreat during the last deglaciation and the Atlantic Water inflow significantly impacted depositional changes within the Wijdefjorden system. In contrast, a decrease in the Atlantic Water inflow during the late Holocene corresponds to glacial re-advance, resulting in shifts in the depositional environment. This study demonstrates the utility of EM modelling in deciphering complex grain-size distributions and reconstructing different climate-driven depositional processes in glacimarine sediments in Svalbard fjords. This integrated approach enhances our understanding of the intricate interplay among climate change, glacier dynamics, and oceanic forcing in polar fjord environments |
format |
Article in Journal/Newspaper |
author |
Ahn, Youngkyu Joe, Young Jin Jang, Kwangchul Kim, Jung-Hyun Son, Yeong Ju Forwick, Matthias Hong, Sungmin Nam, Seung-Il |
spellingShingle |
Ahn, Youngkyu Joe, Young Jin Jang, Kwangchul Kim, Jung-Hyun Son, Yeong Ju Forwick, Matthias Hong, Sungmin Nam, Seung-Il Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling |
author_facet |
Ahn, Youngkyu Joe, Young Jin Jang, Kwangchul Kim, Jung-Hyun Son, Yeong Ju Forwick, Matthias Hong, Sungmin Nam, Seung-Il |
author_sort |
Ahn, Youngkyu |
title |
Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling |
title_short |
Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling |
title_full |
Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling |
title_fullStr |
Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling |
title_full_unstemmed |
Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling |
title_sort |
post-glaciation depositional changes in wijdefjorden, northern svalbard, using grain-size end-member modelling |
publisher |
Elsevier |
publishDate |
2024 |
url |
https://hdl.handle.net/10037/33629 https://doi.org/10.1016/j.margeo.2024.107306 |
long_lat |
ENVELOPE(15.569,15.569,79.543,79.543) |
geographic |
Svalbard Wijdefjorden |
geographic_facet |
Svalbard Wijdefjorden |
genre |
glacier Svalbard Wijdefjord* |
genre_facet |
glacier Svalbard Wijdefjord* |
op_relation |
Marine Geology Ahn Y, Joe YJ, Jang K, Kim J, Son YJ, Forwick M, Hong, Nam S. Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling. Marine Geology. 2024;472 FRIDAID 2269545 doi:10.1016/j.margeo.2024.107306 0025-3227 1872-6151 https://hdl.handle.net/10037/33629 |
op_rights |
openAccess Copyright 2024 The Author(s) |
op_doi |
https://doi.org/10.1016/j.margeo.2024.107306 |
container_title |
Marine Geology |
container_volume |
472 |
container_start_page |
107306 |
_version_ |
1802644561188618240 |