Distribution of dissolved and particulate barium in Antarctic sea ice

Stephanie Jacquet; Sandrine Chifflet; Anne Julie Cavagna; Frank Dehairs; Laurence Monin; Delphine Lannuzel

Abstract

Dissolved Ba (D-Ba) in oceanic waters behaves as a bio-intermediate element and presents strong similarities to nutrients and alkalinity distributions. However, the biogeochemical cycling of Ba is unique and strongly linked with the particulate biogenic Ba (P-Ba; mainly formed as barite crystals, BaSO4) dynamics. In surface waters, P-Ba forms during particulate organic matter degradation by prokaryotes activity, and D-Ba subtraction in ambient water during this process is responsible for subsurface water D-Ba depletion. In sediments, P-Ba is used as an indicator of surface (paleo)-export production. To go further in understanding the interaction between the dissolved and particulate Ba phases and controls on their dynamics, P-Ba and D-Ba were measured in Antarctic sea ice (SIPEX-II cruise, 2012) where previous studies interestingly reported barite accumulation. Results will be confronted to sea-ice biogeochemical properties and discussed in the context of the importance of the Antarctic sea-ice zone as a driver and indicator of global climate processes.

Original language	English
Title of host publication	International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia
Publication status	Published - 2014
Event	International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia - Hobart, United Kingdom Duration: 10 Mar 2014 → 14 Mar 2014

Conference

Conference	International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia
Country/Territory	United Kingdom
City	Hobart
Period	10/03/14 → 14/03/14

SRP2: Strategic Research Programme: Tracing and Modelling of Past & Present Global Changes
Claeys, P., Elskens, M., Huybrechts, P., Gao, Y., Kervyn De Meerendre, M., Claeys, P., Baeyens, W. & Dehairs, F.
1/11/12 → 31/10/24
Project: Fundamental

Cite this

@inbook{815e3cda2ad04688b7348b04df9aa8d2,

title = "Distribution of dissolved and particulate barium in Antarctic sea ice",

abstract = "Dissolved Ba (D-Ba) in oceanic waters behaves as a bio-intermediate element and presents strong similarities to nutrients and alkalinity distributions. However, the biogeochemical cycling of Ba is unique and strongly linked with the particulate biogenic Ba (P-Ba; mainly formed as barite crystals, BaSO4) dynamics. In surface waters, P-Ba forms during particulate organic matter degradation by prokaryotes activity, and D-Ba subtraction in ambient water during this process is responsible for subsurface water D-Ba depletion. In sediments, P-Ba is used as an indicator of surface (paleo)-export production. To go further in understanding the interaction between the dissolved and particulate Ba phases and controls on their dynamics, P-Ba and D-Ba were measured in Antarctic sea ice (SIPEX-II cruise, 2012) where previous studies interestingly reported barite accumulation. Results will be confronted to sea-ice biogeochemical properties and discussed in the context of the importance of the Antarctic sea-ice zone as a driver and indicator of global climate processes.",

author = "Stephanie Jacquet and Sandrine Chifflet and Cavagna, {Anne Julie} and Frank Dehairs and Laurence Monin and Delphine Lannuzel",

year = "2014",

language = "English",

booktitle = "International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia",

note = "International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia ; Conference date: 10-03-2014 Through 14-03-2014",

}

Jacquet, S, Chifflet, S, Cavagna, AJ, Dehairs, F, Monin, L & Lannuzel, D 2014, Distribution of dissolved and particulate barium in Antarctic sea ice. in International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia. International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia, Hobart, United Kingdom, 10/03/14.

Distribution of dissolved and particulate barium in Antarctic sea ice. / Jacquet, Stephanie; Chifflet, Sandrine; Cavagna, Anne Julie; Dehairs, Frank; Monin, Laurence; Lannuzel, Delphine.

International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia. 2014.

Research output: Chapter in Book/Report/Conference proceeding › Meeting abstract (Book)

TY - CHAP

T1 - Distribution of dissolved and particulate barium in Antarctic sea ice

AU - Jacquet, Stephanie

AU - Chifflet, Sandrine

AU - Cavagna, Anne Julie

AU - Dehairs, Frank

AU - Monin, Laurence

AU - Lannuzel, Delphine

PY - 2014

Y1 - 2014

N2 - Dissolved Ba (D-Ba) in oceanic waters behaves as a bio-intermediate element and presents strong similarities to nutrients and alkalinity distributions. However, the biogeochemical cycling of Ba is unique and strongly linked with the particulate biogenic Ba (P-Ba; mainly formed as barite crystals, BaSO4) dynamics. In surface waters, P-Ba forms during particulate organic matter degradation by prokaryotes activity, and D-Ba subtraction in ambient water during this process is responsible for subsurface water D-Ba depletion. In sediments, P-Ba is used as an indicator of surface (paleo)-export production. To go further in understanding the interaction between the dissolved and particulate Ba phases and controls on their dynamics, P-Ba and D-Ba were measured in Antarctic sea ice (SIPEX-II cruise, 2012) where previous studies interestingly reported barite accumulation. Results will be confronted to sea-ice biogeochemical properties and discussed in the context of the importance of the Antarctic sea-ice zone as a driver and indicator of global climate processes.

AB - Dissolved Ba (D-Ba) in oceanic waters behaves as a bio-intermediate element and presents strong similarities to nutrients and alkalinity distributions. However, the biogeochemical cycling of Ba is unique and strongly linked with the particulate biogenic Ba (P-Ba; mainly formed as barite crystals, BaSO4) dynamics. In surface waters, P-Ba forms during particulate organic matter degradation by prokaryotes activity, and D-Ba subtraction in ambient water during this process is responsible for subsurface water D-Ba depletion. In sediments, P-Ba is used as an indicator of surface (paleo)-export production. To go further in understanding the interaction between the dissolved and particulate Ba phases and controls on their dynamics, P-Ba and D-Ba were measured in Antarctic sea ice (SIPEX-II cruise, 2012) where previous studies interestingly reported barite accumulation. Results will be confronted to sea-ice biogeochemical properties and discussed in the context of the importance of the Antarctic sea-ice zone as a driver and indicator of global climate processes.

M3 - Meeting abstract (Book)

BT - International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia

T2 - International Symposium on Sea Ice in a Changing Environment, 10-14/03/2014, Hobart Australia

Y2 - 10 March 2014 through 14 March 2014

ER -

Distribution of dissolved and particulate barium in Antarctic sea ice

Abstract

Conference

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Projects

SRP2: Strategic Research Programme: Tracing and Modelling of Past & Present Global Changes

Cite this