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| Titel |
An inverse model to estimate the origin of the Canary Current in Autumn 2009 |
| VerfasserIn |
M. D. Pérez-Hernández, A. Hernández-Guerra, E. Fraile-Nuez, I. Comas-Rodríguez, V. Benítez-Barrios, J. F. Domínguez-Yanez, P. Vélez-Belchí |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250069718
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| Zusammenfassung |
| The origin of the Canary Current and its pathway during the fall season is estimated from
an inverse model applied to the hydrographic data of a survey carried out in fall
2009 in the geographical area of 28.7-37.0º N, 9.1-24.5º W. The cruise consisted
of 81 CTD stations in which, dissolved oxygen, nitrate, phosphates and silicates,
were obtained too. The Azores Current System is located in the meridional range
33.50-36.25º N at 24.5º W. This System transports eastward 7.2 ± 0.5 Sv in the
thermocline layers and 1.1 ± 0.8 Sv at intermediate layers. The Azores Current
intermediate water mass has the highest portion of SAIW in the region, while the Azores
Countercurrent intermediate waters mass is mainly formed of MW. The Canary Current
extends from 22.25 to 18.50º W at 28.7º N, the westernmost position ever observed.
This current transports southward -6.2 ± 0.6 Sv in the thermocline layers and
-2.0 ± 0.8 Sv at intermediate layers. The intermediate water mass carried by the
Canary Current shows a relative minimum of all nutrients and a relative maximum of
salinity and oxygen which indicates that is formed by a contribution of SAIW to the
surrounding mixed MW-AAIW waters. All this, together with the non-existence of a
southward flow at the northern transect caused by the Portugal Current, suggests that in
autumn, the Canary Current is being purely fed by the Azores Current System. |
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