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| Titel |
Multifractal analysis of oceanic chlorophyll maps remotely sensed from space |
| VerfasserIn |
L. Montera, M. Jouini, S. Verrier, S. Thiria, M. Crepon |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 7, no. 2 ; Nr. 7, no. 2 (2011-03-28), S.219-229 |
| Datensatznummer |
250004536
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| Publikation (Nr.) |
 copernicus.org/os-7-219-2011.pdf |
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| Zusammenfassung |
| Phytoplankton patchiness has been investigated with multifractal analysis
techniques. We analyzed oceanic chlorophyll maps, measured by the SeaWiFS
orbiting sensor, which are considered to be good proxies for phytoplankton.
The study area is the Senegalo-Mauritanian upwelling region, because it has
a low cloud cover and high chlorophyll concentrations. Multifractal
properties are observed, from the sub-mesoscale up to the mesoscale, and are
found to be consistent with the Corssin-Obukhov scale law of passive
scalars. This result indicates that, in this specific region and within this
scale range, turbulent mixing would be the dominant effect leading to the
observed variability of phytoplankton fields. Finally, it is shown that
multifractal patchiness can be responsible for significant biases in the
nonlinear source and sink terms involved in biogeochemical numerical models. |
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