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| Titel |
Coastal upwelling off Mauritania inferred from helium isotope disequilibrium |
| VerfasserIn |
Sebastian Rütten, Reiner Steinfeldt, Jürgen Sültenfuß, Marcus Dengler, Monika Rhein |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250048039
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| Zusammenfassung |
| By bringing cold, nutrient rich water into the surface layer, coastal upwelling strongly affects
the local climate as well as the biological activity. As upwelling velocities are too small to be
measured directly (in the order of 10-5m/s) an indirect method using the helium isotopic
ratio is applied here instead.
The datasets collected during three cruises (2006-2008) in the eastern tropical
North Atlantic Ocean, including the upwelling region off Mauritania, consist of
CTD profiles, water samples for helium isotope analysis and microstructure shear
measurements.
To compare the results, upwelling velocities are additionally calculated from wind fields
taken from the QuikSCAT SeaWinds scatterometer data. First results show a good agreement
of the two methods. |
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