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1

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Nutrient Controls on Export Production in the Southern Ocean (2020)

Arteaga, Lionel ; Pahlow, Markus ; Bushinsky, Seth M. ; [weitere]

AGU (American Geophysical Union) | Wiley

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Publikationsdatum: 2023-02-08

Beschreibung: We use observations from novel biogeochemical profiling floats deployed by the Southern Ocean Carbon and Climate Observations and Modeling program to estimate annual net community production (ANCP; associated with carbon export) from the seasonal drawdown of mesopelagic oxygen and surface nitrate in the Southern Ocean. Our estimates agree with previous observations in showing an increase in ANCP in the vicinity of the polar front (∼3 mol C m−2 y−1), compared to lower rates in the subtropical zone (≤ 1 mol C m−2 y−1) and the seasonal ice zone (〈2 mol C m−2 y−1). Paradoxically, the increase in ANCP south of the subtropical front is associated with elevated surface nitrate and silicate concentrations, but decreasing surface iron. We hypothesize that iron limitation promotes silicification in diatoms, which is evidenced by the low silicate to nitrate ratio of surface waters around the Antarctic polar front. High diatom silicification increases the ballasting effect of particulate organic carbon and overall ANCP in this region. A model-based assessment of our methods shows a good agreement between ANCP estimates based on oxygen and nitrate drawdown and the modeled downward organic carbon flux at 100 m. This agreement supports the presumption that net biological consumption is the dominant process affecting the drawdown of these chemical tracers and that, given sufficient data, ANCP can be inferred from observations of oxygen and/or nitrate drawdown in the Southern Ocean.

Schlagwort(e): Course of study: MSc Biological Oceanography

Materialart: Article , PeerReviewed

Format: text

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2

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The global moment rate distribution within plate boundary zones (2002)

Corné Kreemer ; William E. Holt ; A. John Haines ; [weitere]

AGU

In: Bull., Polar Proj. OP-O3A4, Plate Boundary Zones, Washington, D.C., AGU, vol. 30, no. 2, pp. 173-190, (ISBN 0-87590-532-3, AGU Code: GD0305323)

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Publikationsdatum: 2002

Schlagwort(e): Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Strain ; GSRM ; map ; Paleomagnetism ; Plate tectonics ; Seismicity

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3

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Plate kinematics in a global and European scale by Lageos laser data from 1983 to 1990 (1993)

G. Gendt ; H. Montag ; G. Dick ; [weitere]

AGU

In: Professional Paper, Contribution of Space Geodesy to Geodynamics: Crustal Dynamics, Washington, AGU, vol. 23, no. Subvol. b, pp. 311-329, (ISBN: 3-540-23712-7)

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Publikationsdatum: 1993

Schlagwort(e): Plate tectonics ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; ranging ; Geodesy ; Review article

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4

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Space geodesy and plate motions (1993)

S. Stein ; D.L. Turcotte

AGU

In: Bull., Open-File Rept., Contribution of Space Geodesy to Geodynamics: Crustal Dynamics, Washington, AGU, vol. 23, no. 16, pp. 5-20, (ISBN 1-86239-165-3, vi + 330 pp.)

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Publikationsdatum: 1993

Schlagwort(e): Plate tectonics ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; ranging ; Geodesy ; Review article

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5

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Slow Deformation and Transmission of Stress in the Earth (1989)

S. C. Cohen ; Vanicek, P., Eds.

AGU

In: Washington D. C., AGU, vol. 4, no. 3, pp. 2-203, (ISBN: 3-540-41598-X)

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Publikationsdatum: 1989

Schlagwort(e): Plate tectonics ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Stress ; Vanicek

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6

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Mechanical models of tilted block basins (1989)

H. W. S. McQueen ; C. Beaumont ; Raymond A. Price

AGU

In: Bull., Polar Proj. OP-O3A4, Origin and Evolution of Sedimentary Basins and Their Energy, Washington, D.C., AGU, vol. 48, no. 4, pp. 65-71, (ISBN 0080419208)

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Publikationsdatum: 1989

Schlagwort(e): Geol. aspects ; Modelling ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; 8110 ; Tectonophysics ; Continental ; tectonics ; 8165 ; Structural ; geology ; (crustal ; structure ; and ; mechanics) ; 8194 ; Instruments ; and ; techniques

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7

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Kinematics of the South American subduction zone from global plate reconstructions (1983)

Rex H. Pilger_Jr. ; Ramón Cabré

AGU

In: Bull., Open-File Rept., Geodynamics of the Eastern Pacific Region, Caribbean and Scotia Arcs, Washington, D.C., AGU, vol. 9, no. 1, pp. 113-125, (ISBN 0080419208)

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Publikationsdatum: 1983

Schlagwort(e): Plate tectonics ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Subduction zone ; Review article ; Cabre

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8

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Epeirogeny and plate tectonics (1980)

H. W. Menard ; J.M. Bird

AGU

In: Bull., Polar Proj. OP-O3A4, Plate Tectonics. Selected Papers from Publications of the AGU, Washington, D.C., AGU, vol. 22, no. 4, pp. 444-455, (ISBN 0080419208)

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Publikationsdatum: 1980

Schlagwort(e): Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Plate tectonics

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9

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Geometry of Benioff zones: Lateral segmentation and downwards bending of the subducted lithosphere (1977)

B. L. Isacks ; M. Barazangi ; W.C. Pitman_III

AGU

In: Bull., Polar Proj. OP-O3A4, Island Arcs, Deep Sea Trenches and Back Arc Basins, Englewood Cliffs, AGU, vol. 1, no. XVI:, pp. 99-114, (ISBN: 3-540-23712-7)

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Publikationsdatum: 1977

Schlagwort(e): Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Seismicity ; Subduction zone ; Seismology ; Inhomogeneity

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10

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An Outline of Structural Geology (1976)

B. E. Hobbs ; W. D. Means ; P. F. Williams

Wiley

In: New York, 571 pp., Wiley, vol. 5, no. XVI:, pp. 1-14, (ISBN 0-89871-521-0)

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Publikationsdatum: 1976

Schlagwort(e): Structural geology ; Textbook of geology ; Stress ; Geol. aspects ; Crustal deformation (cf. Earthquake precursor: deformation or strain)

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