Multi-year particle fluxes in Kongsfjorden, Svalbard
High-latitude regions are warming faster than other areas due to reduction of snow cover and sea ice loss and changes in atmospheric and ocean circulation. The combination of these processes, collectively known as polar amplification, provides an extraordinary opportunity to document the ongoing the...
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ftdoajarticles:oai:doaj.org/article:3af7b31936bb408f95b93fb80c483e7a 2023-05-15T16:22:13+02:00 Multi-year particle fluxes in Kongsfjorden, Svalbard A. D'Angelo F. Giglio S. Miserocchi A. Sanchez-Vidal S. Aliani T. Tesi A. Viola M. Mazzola L. Langone 2018-09-01T00:00:00Z https://doi.org/10.5194/bg-15-5343-2018 https://doaj.org/article/3af7b31936bb408f95b93fb80c483e7a EN eng Copernicus Publications https://www.biogeosciences.net/15/5343/2018/bg-15-5343-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-5343-2018 1726-4170 1726-4189 https://doaj.org/article/3af7b31936bb408f95b93fb80c483e7a Biogeosciences, Vol 15, Pp 5343-5363 (2018) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/bg-15-5343-2018 2022-12-31T08:56:53Z High-latitude regions are warming faster than other areas due to reduction of snow cover and sea ice loss and changes in atmospheric and ocean circulation. The combination of these processes, collectively known as polar amplification, provides an extraordinary opportunity to document the ongoing thermal destabilisation of the terrestrial cryosphere and the release of land-derived material into the aquatic environment. This study presents a 6-year time series (2010–2016) of physical parameters and particle fluxes collected by an oceanographic mooring in Kongsfjorden (Spitsbergen, Svalbard). In recent decades, Kongsfjorden has been experiencing rapid loss of sea ice coverage and retreat of local glaciers as a result of the progressive increase in ocean and air temperatures. The overarching goal of this study was to continuously monitor the inner fjord particle sinking and to understand to what extent the temporal evolution of particulate fluxes was linked to the progressive changes in both Atlantic and freshwater input. Our data show high peaks of settling particles during warm seasons, in terms of both organic and inorganic matter. The different sources of suspended particles were described as a mixing of glacier carbonate, glacier siliciclastic and autochthonous marine input. The glacier releasing sediments into the fjord was the predominant source, while the sediment input by rivers was reduced at the mooring site. Our time series showed that the seasonal sunlight exerted first-order control on the particulate fluxes in the inner fjord. The marine fraction peaked when the solar radiation was at a maximum in May–June while the land-derived fluxes exhibited a 1–2-month lag consistent with the maximum air temperature and glacier melting. The inter-annual time-weighted total mass fluxes varied by 2 orders of magnitude over time, with relatively higher values in 2011, 2013, and 2015. Our results suggest that the land-derived input will remarkably increase over time in a warming scenario. Further studies are ... Article in Journal/Newspaper glacier Kongsfjord* Kongsfjorden Sea ice Svalbard Spitsbergen Directory of Open Access Journals: DOAJ Articles Svalbard Biogeosciences 15 17 5343 5363 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 A. D'Angelo F. Giglio S. Miserocchi A. Sanchez-Vidal S. Aliani T. Tesi A. Viola M. Mazzola L. Langone Multi-year particle fluxes in Kongsfjorden, Svalbard |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
High-latitude regions are warming faster than other areas due to reduction of snow cover and sea ice loss and changes in atmospheric and ocean circulation. The combination of these processes, collectively known as polar amplification, provides an extraordinary opportunity to document the ongoing thermal destabilisation of the terrestrial cryosphere and the release of land-derived material into the aquatic environment. This study presents a 6-year time series (2010–2016) of physical parameters and particle fluxes collected by an oceanographic mooring in Kongsfjorden (Spitsbergen, Svalbard). In recent decades, Kongsfjorden has been experiencing rapid loss of sea ice coverage and retreat of local glaciers as a result of the progressive increase in ocean and air temperatures. The overarching goal of this study was to continuously monitor the inner fjord particle sinking and to understand to what extent the temporal evolution of particulate fluxes was linked to the progressive changes in both Atlantic and freshwater input. Our data show high peaks of settling particles during warm seasons, in terms of both organic and inorganic matter. The different sources of suspended particles were described as a mixing of glacier carbonate, glacier siliciclastic and autochthonous marine input. The glacier releasing sediments into the fjord was the predominant source, while the sediment input by rivers was reduced at the mooring site. Our time series showed that the seasonal sunlight exerted first-order control on the particulate fluxes in the inner fjord. The marine fraction peaked when the solar radiation was at a maximum in May–June while the land-derived fluxes exhibited a 1–2-month lag consistent with the maximum air temperature and glacier melting. The inter-annual time-weighted total mass fluxes varied by 2 orders of magnitude over time, with relatively higher values in 2011, 2013, and 2015. Our results suggest that the land-derived input will remarkably increase over time in a warming scenario. Further studies are ... |
format |
Article in Journal/Newspaper |
author |
A. D'Angelo F. Giglio S. Miserocchi A. Sanchez-Vidal S. Aliani T. Tesi A. Viola M. Mazzola L. Langone |
author_facet |
A. D'Angelo F. Giglio S. Miserocchi A. Sanchez-Vidal S. Aliani T. Tesi A. Viola M. Mazzola L. Langone |
author_sort |
A. D'Angelo |
title |
Multi-year particle fluxes in Kongsfjorden, Svalbard |
title_short |
Multi-year particle fluxes in Kongsfjorden, Svalbard |
title_full |
Multi-year particle fluxes in Kongsfjorden, Svalbard |
title_fullStr |
Multi-year particle fluxes in Kongsfjorden, Svalbard |
title_full_unstemmed |
Multi-year particle fluxes in Kongsfjorden, Svalbard |
title_sort |
multi-year particle fluxes in kongsfjorden, svalbard |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-15-5343-2018 https://doaj.org/article/3af7b31936bb408f95b93fb80c483e7a |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
glacier Kongsfjord* Kongsfjorden Sea ice Svalbard Spitsbergen |
genre_facet |
glacier Kongsfjord* Kongsfjorden Sea ice Svalbard Spitsbergen |
op_source |
Biogeosciences, Vol 15, Pp 5343-5363 (2018) |
op_relation |
https://www.biogeosciences.net/15/5343/2018/bg-15-5343-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-5343-2018 1726-4170 1726-4189 https://doaj.org/article/3af7b31936bb408f95b93fb80c483e7a |
op_doi |
https://doi.org/10.5194/bg-15-5343-2018 |
container_title |
Biogeosciences |
container_volume |
15 |
container_issue |
17 |
container_start_page |
5343 |
op_container_end_page |
5363 |
_version_ |
1766010182048940032 |