Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean
Marine diatoms take up silicic acid for the buildup of theiropaline shells and discriminate against the heavier siliconisotopes. Rayleigh distillation in the upper mixed layer duringthe growing season increases the mean isotopic compositionof diatom shells. In principle it should be possible torecon...
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ftawi:oai:epic.awi.de:8544 2023-09-05T13:23:27+02:00 Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean Wischmeyer, A. G. De La Rocha, Christina Maier-Reimer, E. Wolf-Gladrow, Dieter 2003 https://epic.awi.de/id/eprint/8544/ https://hdl.handle.net/10013/epic.19071 unknown Wischmeyer, A. G. , De La Rocha, C. , Maier-Reimer, E. and Wolf-Gladrow, D. orcid:0000-0001-9531-8668 (2003) Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean , Invited Talk,EGS - AGU - EUG Joint Assembly, Nice,France, 07 - 11 April 2003. . hdl:10013/epic.19071 EPIC3Invited Talk,EGS - AGU - EUG Joint Assembly, Nice,France, 07 - 11 April 2003. Conference notRev 2003 ftawi 2023-08-22T19:47:29Z Marine diatoms take up silicic acid for the buildup of theiropaline shells and discriminate against the heavier siliconisotopes. Rayleigh distillation in the upper mixed layer duringthe growing season increases the mean isotopic compositionof diatom shells. In principle it should be possible toreconstruct the relative utilization of silicic acid from theisotopic composition of diatom shells archived in sediments.In the real ocean, however, several other factors perturb thissimple picture. The impact of mixing, advection andremineralization on the isotopic composition of silicic acidand diatom shells have been investigated by integration andanalysis of a biogeochemical general circulation model aswell as a conceptual model. We will discuss the applicabilityof silicon isotopes in the Southern Ocean. Conference Object Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Southern Ocean |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
Marine diatoms take up silicic acid for the buildup of theiropaline shells and discriminate against the heavier siliconisotopes. Rayleigh distillation in the upper mixed layer duringthe growing season increases the mean isotopic compositionof diatom shells. In principle it should be possible toreconstruct the relative utilization of silicic acid from theisotopic composition of diatom shells archived in sediments.In the real ocean, however, several other factors perturb thissimple picture. The impact of mixing, advection andremineralization on the isotopic composition of silicic acidand diatom shells have been investigated by integration andanalysis of a biogeochemical general circulation model aswell as a conceptual model. We will discuss the applicabilityof silicon isotopes in the Southern Ocean. |
format |
Conference Object |
author |
Wischmeyer, A. G. De La Rocha, Christina Maier-Reimer, E. Wolf-Gladrow, Dieter |
spellingShingle |
Wischmeyer, A. G. De La Rocha, Christina Maier-Reimer, E. Wolf-Gladrow, Dieter Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean |
author_facet |
Wischmeyer, A. G. De La Rocha, Christina Maier-Reimer, E. Wolf-Gladrow, Dieter |
author_sort |
Wischmeyer, A. G. |
title |
Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean |
title_short |
Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean |
title_full |
Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean |
title_fullStr |
Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean |
title_full_unstemmed |
Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean |
title_sort |
stable silicon isotopes as a proxy of silicon utilization in the southern ocean |
publishDate |
2003 |
url |
https://epic.awi.de/id/eprint/8544/ https://hdl.handle.net/10013/epic.19071 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
EPIC3Invited Talk,EGS - AGU - EUG Joint Assembly, Nice,France, 07 - 11 April 2003. |
op_relation |
Wischmeyer, A. G. , De La Rocha, C. , Maier-Reimer, E. and Wolf-Gladrow, D. orcid:0000-0001-9531-8668 (2003) Stable silicon isotopes as a proxy of silicon utilization in the Southern Ocean , Invited Talk,EGS - AGU - EUG Joint Assembly, Nice,France, 07 - 11 April 2003. . hdl:10013/epic.19071 |
_version_ |
1776204038189088768 |