Ocean glider observations of iceberg-enhanced biological production in the northwestern Weddell Sea: Iceberg enhanced production

Louise C. Biddle; Jan Kaiser; Karen J. Heywood; Andrew Thompson; Adrian Jenkins

doi:10.1002/2014GL062850

Ocean glider observations of iceberg-enhanced biological production in the northwestern Weddell Sea: Iceberg enhanced production

Louise C. Biddle, Jan Kaiser, Karen J. Heywood, Andrew Thompson, Adrian Jenkins

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Abstract

Icebergs affect local biological production around Antarctica. We used an ocean glider to observe the effects of a large iceberg that was advected by the Antarctic Slope Current along the continental slope in the northwestern Weddell Sea in early 2012. The high-resolution glider data reveal a pronounced effect of the iceberg on ocean properties, with oxygen concentrations of (13 ± 4) μmol kg−1 higher than levels in surrounding waters, which are most likely due to positive net community production. This response was confined to three areas of water in the direct vicinity of the iceberg track, each no larger than 2 km2. Our findings suggest that icebergs have an impact on Antarctic production presumably through local micronutrient injections, on a scale smaller than typical satellite observations of biological production in the Southern Ocean.

Original language	English
Pages (from-to)	459-465
Number of pages	7
Journal	Geophysical Research Letters
Volume	42
Issue number	2
Early online date	27 Jan 2015
DOIs	https://doi.org/10.1002/2014GL062850
Publication status	Published - 28 Jan 2015

Keywords

Antarctic
Iceberg
Production
Gliders

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10.1002/2014GL062850

Biddle_et_al-2015-Geophysical_Research_Letters
©2014. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Final published version, 4.34 MB

Karen Heywood
- K.Heywooduea.acuk
- School of Environmental Sciences - Professor of Physical Oceanography
- Centre for Ocean and Atmospheric Sciences - Member
- ClimateUEA - Member
Person: Research Group Member, Academic, Teaching & Research
Jan Kaiser
- J.Kaiseruea.acuk
- School of Environmental Sciences - Professor of Biogeochemistry
- Centre for Ocean and Atmospheric Sciences - Member
- ClimateUEA - Member
Person: Research Group Member, Academic, Teaching & Research

Gliders: Excellent New Tools for Observing the Ocean (GENTOO)
Heywood, K.
Natural Environment Research Council
1/10/10 → 31/03/15
Project: Research

Cite this

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title = "Ocean glider observations of iceberg-enhanced biological production in the northwestern Weddell Sea: Iceberg enhanced production",

abstract = "Icebergs affect local biological production around Antarctica. We used an ocean glider to observe the effects of a large iceberg that was advected by the Antarctic Slope Current along the continental slope in the northwestern Weddell Sea in early 2012. The high-resolution glider data reveal a pronounced effect of the iceberg on ocean properties, with oxygen concentrations of (13 ± 4) μmol kg−1 higher than levels in surrounding waters, which are most likely due to positive net community production. This response was confined to three areas of water in the direct vicinity of the iceberg track, each no larger than 2 km2. Our findings suggest that icebergs have an impact on Antarctic production presumably through local micronutrient injections, on a scale smaller than typical satellite observations of biological production in the Southern Ocean.",

keywords = "Antarctic, Iceberg, Production, Gliders",

author = "Biddle, {Louise C.} and Jan Kaiser and Heywood, {Karen J.} and Andrew Thompson and Adrian Jenkins",

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doi = "10.1002/2014GL062850",

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journal = "Geophysical Research Letters",

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TY - JOUR

T1 - Ocean glider observations of iceberg-enhanced biological production in the northwestern Weddell Sea

T2 - Iceberg enhanced production

AU - Biddle, Louise C.

AU - Kaiser, Jan

AU - Heywood, Karen J.

AU - Thompson, Andrew

AU - Jenkins, Adrian

N1 - ©2014. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

PY - 2015/1/28

Y1 - 2015/1/28

N2 - Icebergs affect local biological production around Antarctica. We used an ocean glider to observe the effects of a large iceberg that was advected by the Antarctic Slope Current along the continental slope in the northwestern Weddell Sea in early 2012. The high-resolution glider data reveal a pronounced effect of the iceberg on ocean properties, with oxygen concentrations of (13 ± 4) μmol kg−1 higher than levels in surrounding waters, which are most likely due to positive net community production. This response was confined to three areas of water in the direct vicinity of the iceberg track, each no larger than 2 km2. Our findings suggest that icebergs have an impact on Antarctic production presumably through local micronutrient injections, on a scale smaller than typical satellite observations of biological production in the Southern Ocean.

AB - Icebergs affect local biological production around Antarctica. We used an ocean glider to observe the effects of a large iceberg that was advected by the Antarctic Slope Current along the continental slope in the northwestern Weddell Sea in early 2012. The high-resolution glider data reveal a pronounced effect of the iceberg on ocean properties, with oxygen concentrations of (13 ± 4) μmol kg−1 higher than levels in surrounding waters, which are most likely due to positive net community production. This response was confined to three areas of water in the direct vicinity of the iceberg track, each no larger than 2 km2. Our findings suggest that icebergs have an impact on Antarctic production presumably through local micronutrient injections, on a scale smaller than typical satellite observations of biological production in the Southern Ocean.

KW - Antarctic

KW - Iceberg

KW - Production

KW - Gliders

U2 - 10.1002/2014GL062850

DO - 10.1002/2014GL062850

M3 - Article

VL - 42

SP - 459

EP - 465

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 2

ER -

Ocean glider observations of iceberg-enhanced biological production in the northwestern Weddell Sea: Iceberg enhanced production

Abstract

Keywords

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Profiles

Karen Heywood

Jan Kaiser

Projects

Gliders: Excellent New Tools for Observing the Ocean (GENTOO)

Cite this