Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current
International audience The carbon cycle of the Arctic Ocean is tightly regulated by land–atmosphere–cryosphere–ocean interactions. Characterizing these environmental exchanges and feedbacks is critical to facilitate projections of the carbon cycle under changing climate conditions. The environmental...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
---|---|
Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | https://hal-univ-perp.archives-ouvertes.fr/hal-01167553 https://doi.org/10.1016/j.dsr.2015.06.002 |
id |
ftccsdartic:oai:HAL:hal-01167553v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Fram Strait Ice rafted detritus West Spitsbergen current Particle fluxes Organic Carbon [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Fram Strait Ice rafted detritus West Spitsbergen current Particle fluxes Organic Carbon [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Sanchez-Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miquel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Pusceddu, Antonio Danovaro, Roberto Particle sources and downward fluxes in the eastern Fram strait under the influence of the west Spitsbergen current |
topic_facet |
Fram Strait Ice rafted detritus West Spitsbergen current Particle fluxes Organic Carbon [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The carbon cycle of the Arctic Ocean is tightly regulated by land–atmosphere–cryosphere–ocean interactions. 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 sediment 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 Spitsbergen. 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 (>414 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 percentages of the biogenic compounds (opal, organic carbon and calcium carbonate) linked to the phytoplankton bloom in spring–summer. ... |
author2 |
GRC Geociències Marines Department de Estratigrafía Istituto di Scienze Marine Bologna (ISMAR) Istituto di Science Marine (ISMAR ) Consiglio Nazionale delle Ricerche (CNR)-Consiglio Nazionale delle Ricerche (CNR) Centre for Arctic Gas Hydrate, Environment and Climate (CAGE) The Arctic University of Norway (UiT) Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM) Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS) Institute of Environmental Assessment and Water Research (IDAEA) Consejo Superior de Investigaciones Científicas Madrid (CSIC) Department of Life and Environmental Sciences Polytechnic University of Marche |
format |
Article in Journal/Newspaper |
author |
Sanchez-Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miquel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Pusceddu, Antonio Danovaro, Roberto |
author_facet |
Sanchez-Vidal, Anna Veres, Oriol Langone, Leonardo Ferré, Benedicte Calafat, Antoni Canals, Miquel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Pusceddu, Antonio Danovaro, Roberto |
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 |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal-univ-perp.archives-ouvertes.fr/hal-01167553 https://doi.org/10.1016/j.dsr.2015.06.002 |
long_lat |
ENVELOPE(17.000,17.000,76.000,76.000) |
geographic |
Arctic Arctic Ocean Storfjordrenna |
geographic_facet |
Arctic Arctic Ocean Storfjordrenna |
genre |
Arctic Arctic Ocean Fram Strait Phytoplankton Sea ice Storfjordrenna Spitsbergen |
genre_facet |
Arctic Arctic Ocean Fram Strait Phytoplankton Sea ice Storfjordrenna Spitsbergen |
op_source |
ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal-univ-perp.archives-ouvertes.fr/hal-01167553 Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2015, 103, pp.49-63. ⟨10.1016/j.dsr.2015.06.002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2015.06.002 hal-01167553 https://hal-univ-perp.archives-ouvertes.fr/hal-01167553 doi:10.1016/j.dsr.2015.06.002 |
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 |
_version_ |
1766330176381124608 |
spelling |
ftccsdartic:oai:HAL:hal-01167553v1 2023-05-15T14:58:05+02:00 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, Miquel Durrieu de Madron, Xavier Heussner, Serge Mienert, Jurgen Grimalt, Joan O. Pusceddu, Antonio Danovaro, Roberto GRC Geociències Marines Department de Estratigrafía Istituto di Scienze Marine Bologna (ISMAR) Istituto di Science Marine (ISMAR ) Consiglio Nazionale delle Ricerche (CNR)-Consiglio Nazionale delle Ricerche (CNR) Centre for Arctic Gas Hydrate, Environment and Climate (CAGE) The Arctic University of Norway (UiT) Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM) Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS) Institute of Environmental Assessment and Water Research (IDAEA) Consejo Superior de Investigaciones Científicas Madrid (CSIC) Department of Life and Environmental Sciences Polytechnic University of Marche 2015-09 https://hal-univ-perp.archives-ouvertes.fr/hal-01167553 https://doi.org/10.1016/j.dsr.2015.06.002 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2015.06.002 hal-01167553 https://hal-univ-perp.archives-ouvertes.fr/hal-01167553 doi:10.1016/j.dsr.2015.06.002 ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal-univ-perp.archives-ouvertes.fr/hal-01167553 Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2015, 103, pp.49-63. ⟨10.1016/j.dsr.2015.06.002⟩ Fram Strait Ice rafted detritus West Spitsbergen current Particle fluxes Organic Carbon [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.1016/j.dsr.2015.06.002 2021-09-12T00:41:47Z International audience The carbon cycle of the Arctic Ocean is tightly regulated by land–atmosphere–cryosphere–ocean interactions. 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 sediment 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 Spitsbergen. 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 (>414 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 percentages of the biogenic compounds (opal, organic carbon and calcium carbonate) linked to the phytoplankton bloom in spring–summer. ... Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Phytoplankton Sea ice Storfjordrenna Spitsbergen Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Arctic Ocean Storfjordrenna ENVELOPE(17.000,17.000,76.000,76.000) Deep Sea Research Part I: Oceanographic Research Papers 103 49 63 |