Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current
The carbon cycle of the Arctic Ocean is tightly regulated by land–atmosphere–cryosphere–ocean inter- actions. Characterizing these environmental exchanges and feedbacks is critical to facilitate projections of the carbon cycle under changing climate conditions. The environmental drivers of sinking p...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Online Access: | http://hdl.handle.net/11584/133190 https://doi.org/10.1016/j.dsr.2015.06.002 http://www.sciencedirect.com/science/article/pii/S0967063715001065 |
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ftunicagliariris:oai:iris.unica.it:11584/133190 2024-02-11T10:00:59+01:00 Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current Sanchez Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miguel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Danovaro, Roberto PUSCEDDU, ANTONIO Sanchez Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miguel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Pusceddu, Antonio Danovaro, Roberto 2015 http://hdl.handle.net/11584/133190 https://doi.org/10.1016/j.dsr.2015.06.002 http://www.sciencedirect.com/science/article/pii/S0967063715001065 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000360871700005 volume:103 firstpage:49 lastpage:63 numberofpages:15 journal:DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS http://hdl.handle.net/11584/133190 doi:10.1016/j.dsr.2015.06.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84934904197 http://www.sciencedirect.com/science/article/pii/S0967063715001065 info:eu-repo/semantics/closedAccess Fram Strait Ice rafted detritu Organic carbon Particle fluxe West Spitsbergen current Aquatic Science Oceanography info:eu-repo/semantics/article 2015 ftunicagliariris https://doi.org/10.1016/j.dsr.2015.06.002 2024-01-24T17:49:11Z The carbon cycle of the Arctic Ocean is tightly regulated by land–atmosphere–cryosphere–ocean inter- actions. Characterizing these environmental exchanges and feedbacks is critical to facilitate projections of the carbon cycle under changing climate conditions. The environmental drivers of sinking particles including organic carbon (OC) to the deep-sea floor are investigated with four moorings including se- diment traps and currentmeters at the Arctic gateway in the eastern Fram Strait, which is the area where warm anomalies are transported northwards to the Arctic. Particles fluxes were collected over one year (July 2010–July 2011) and have been analysed to obtain the content of the lithogenic fraction, calcium carbonate, OC and its stable isotopes, opal, and the grain size. Records of near bottom current speed and temperature along with satellite observations of sea ice extent and chlorophyll-a concentration have been used for evaluation of the environmental conditions. We found increased lithogenic fluxes (up to 9872 mg m 2 d 1) and coarsening grain size of settling particles in late winter–early spring. At the same time, intensifications of the northward flowing west Spitsbergen current (WSC) were recorded. The WSC was able to resuspend and transport northwards sediments that were deposited at the outlet of Storfjordrenna and on the upper slope west of Spits- bergen. The signal of recurrent winnowing of fine particles was also detected in the top layer of surface sediments. In addition, an increased arrival of sea ice transported ice rafted detritus (4414 detrital carbonate mineral grains larger than 1 mm per m2) from the southern Spitsbergen coast along with terrestrial organic matter was observed beyond 1000 m of water depth during winter months. Finally, the downward particle fluxes showed typical temporal variability of high latitudes, with high percen- tages of the biogenic compounds (opal, organic carbon and calcium carbonate) linked to the phyto- plankton bloom in spring–summer. However, on an annual ... Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Sea ice Storfjordrenna Spitsbergen Università degli Studi di Cagliari: UNICA IRIS Arctic Arctic Ocean Bergen Storfjordrenna ENVELOPE(17.000,17.000,76.000,76.000) Deep Sea Research Part I: Oceanographic Research Papers 103 49 63 |
institution |
Open Polar |
collection |
Università degli Studi di Cagliari: UNICA IRIS |
op_collection_id |
ftunicagliariris |
language |
English |
topic |
Fram Strait Ice rafted detritu Organic carbon Particle fluxe West Spitsbergen current Aquatic Science Oceanography |
spellingShingle |
Fram Strait Ice rafted detritu Organic carbon Particle fluxe West Spitsbergen current Aquatic Science Oceanography Sanchez Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miguel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Danovaro, Roberto PUSCEDDU, ANTONIO Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current |
topic_facet |
Fram Strait Ice rafted detritu Organic carbon Particle fluxe West Spitsbergen current Aquatic Science Oceanography |
description |
The carbon cycle of the Arctic Ocean is tightly regulated by land–atmosphere–cryosphere–ocean inter- actions. Characterizing these environmental exchanges and feedbacks is critical to facilitate projections of the carbon cycle under changing climate conditions. The environmental drivers of sinking particles including organic carbon (OC) to the deep-sea floor are investigated with four moorings including se- diment traps and currentmeters at the Arctic gateway in the eastern Fram Strait, which is the area where warm anomalies are transported northwards to the Arctic. Particles fluxes were collected over one year (July 2010–July 2011) and have been analysed to obtain the content of the lithogenic fraction, calcium carbonate, OC and its stable isotopes, opal, and the grain size. Records of near bottom current speed and temperature along with satellite observations of sea ice extent and chlorophyll-a concentration have been used for evaluation of the environmental conditions. We found increased lithogenic fluxes (up to 9872 mg m 2 d 1) and coarsening grain size of settling particles in late winter–early spring. At the same time, intensifications of the northward flowing west Spitsbergen current (WSC) were recorded. The WSC was able to resuspend and transport northwards sediments that were deposited at the outlet of Storfjordrenna and on the upper slope west of Spits- bergen. The signal of recurrent winnowing of fine particles was also detected in the top layer of surface sediments. In addition, an increased arrival of sea ice transported ice rafted detritus (4414 detrital carbonate mineral grains larger than 1 mm per m2) from the southern Spitsbergen coast along with terrestrial organic matter was observed beyond 1000 m of water depth during winter months. Finally, the downward particle fluxes showed typical temporal variability of high latitudes, with high percen- tages of the biogenic compounds (opal, organic carbon and calcium carbonate) linked to the phyto- plankton bloom in spring–summer. However, on an annual ... |
author2 |
Sanchez Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miguel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Pusceddu, Antonio Danovaro, Roberto |
format |
Article in Journal/Newspaper |
author |
Sanchez Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miguel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Danovaro, Roberto PUSCEDDU, ANTONIO |
author_facet |
Sanchez Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miguel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Danovaro, Roberto PUSCEDDU, ANTONIO |
author_sort |
Sanchez Vidal, Anna |
title |
Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current |
title_short |
Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current |
title_full |
Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current |
title_fullStr |
Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current |
title_full_unstemmed |
Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current |
title_sort |
particle sources and downward fluxes in the eastern fram strait under the influence of the west spitsbergen current |
publishDate |
2015 |
url |
http://hdl.handle.net/11584/133190 https://doi.org/10.1016/j.dsr.2015.06.002 http://www.sciencedirect.com/science/article/pii/S0967063715001065 |
long_lat |
ENVELOPE(17.000,17.000,76.000,76.000) |
geographic |
Arctic Arctic Ocean Bergen Storfjordrenna |
geographic_facet |
Arctic Arctic Ocean Bergen Storfjordrenna |
genre |
Arctic Arctic Ocean Fram Strait Sea ice Storfjordrenna Spitsbergen |
genre_facet |
Arctic Arctic Ocean Fram Strait Sea ice Storfjordrenna Spitsbergen |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000360871700005 volume:103 firstpage:49 lastpage:63 numberofpages:15 journal:DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS http://hdl.handle.net/11584/133190 doi:10.1016/j.dsr.2015.06.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84934904197 http://www.sciencedirect.com/science/article/pii/S0967063715001065 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.dsr.2015.06.002 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
103 |
container_start_page |
49 |
op_container_end_page |
63 |
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1790596702229495808 |