Madagascar: A pacemaker for the Agulhas Current system?

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dc.contributor.authorPenven, P
dc.contributor.authorLutjeharms, J R E
dc.contributor.authorFlorenchie, P
dc.date.accessioned2021-10-08T07:04:07Z
dc.date.available2021-10-08T07:04:07Z
dc.date.issued2006
dc.description.abstract[1] Western boundary currents are driven by zonally integrated wind-stress curl over the width of subtropical basins. This cross-basin integration is interrupted in the South Indian Ocean where Madagascar presents a formidable barrier. Nevertheless, a western boundary current has been thought to exist in the Mozambique Channel, the Mozambique Current. Recent observations have however shown that no such current exists and that the flow in the channel instead consists of a train of eddies. Is this western boundary anomaly due to the presence of Madagascar? We have used a primitive equations model to investigate the flow in the South West Indian Ocean as if there were no Madagascar. We show that a normal, continuous western boundary current is then formed that constitutes a continuum with the Agulhas Current. The presence of Madagascar is shown to affect the frequency of inter-ocean exchange events south of Africa.
dc.identifier.apacitationPenven, P., Lutjeharms, J. R. E., & Florenchie, P. (2006). Madagascar: A pacemaker for the Agulhas Current system?. <i>Geophysical Research Letters</i>, 33(17), 174 - 177. http://hdl.handle.net/11427/34430en_ZA
dc.identifier.chicagocitationPenven, P, J R E Lutjeharms, and P Florenchie "Madagascar: A pacemaker for the Agulhas Current system?." <i>Geophysical Research Letters</i> 33, 17. (2006): 174 - 177. http://hdl.handle.net/11427/34430en_ZA
dc.identifier.citationPenven, P., Lutjeharms, J.R.E. & Florenchie, P. 2006. Madagascar: A pacemaker for the Agulhas Current system?. <i>Geophysical Research Letters.</i> 33(17):174 - 177. http://hdl.handle.net/11427/34430en_ZA
dc.identifier.issn0094-8276
dc.identifier.issn1944-8007
dc.identifier.ris TY - Journal Article AU - Penven, P AU - Lutjeharms, J R E AU - Florenchie, P AB - [1] Western boundary currents are driven by zonally integrated wind-stress curl over the width of subtropical basins. This cross-basin integration is interrupted in the South Indian Ocean where Madagascar presents a formidable barrier. Nevertheless, a western boundary current has been thought to exist in the Mozambique Channel, the Mozambique Current. Recent observations have however shown that no such current exists and that the flow in the channel instead consists of a train of eddies. Is this western boundary anomaly due to the presence of Madagascar? We have used a primitive equations model to investigate the flow in the South West Indian Ocean as if there were no Madagascar. We show that a normal, continuous western boundary current is then formed that constitutes a continuum with the Agulhas Current. The presence of Madagascar is shown to affect the frequency of inter-ocean exchange events south of Africa. DA - 2006 DB - OpenUCT DP - University of Cape Town IS - 17 J1 - Geophysical Research Letters LK - https://open.uct.ac.za PY - 2006 SM - 0094-8276 SM - 1944-8007 T1 - Madagascar: A pacemaker for the Agulhas Current system? TI - Madagascar: A pacemaker for the Agulhas Current system? UR - http://hdl.handle.net/11427/34430 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34430
dc.identifier.vancouvercitationPenven P, Lutjeharms JRE, Florenchie P. Madagascar: A pacemaker for the Agulhas Current system?. Geophysical Research Letters. 2006;33(17):174 - 177. http://hdl.handle.net/11427/34430.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Oceanography
dc.publisher.facultyFaculty of Science
dc.sourceGeophysical Research Letters
dc.source.journalissue17
dc.source.journalvolume33
dc.source.pagination174 - 177
dc.source.urihttps://dx.doi.org/10.1029/2006GL026854
dc.subject.otherAfrica
dc.subject.otherfrequency
dc.subject.otherContinuum
dc.subject.othermodels
dc.subject.otherPrimitive equation
dc.subject.otheranomalies
dc.subject.otherVortex
dc.subject.otherchannels
dc.subject.otherIndian Ocean
dc.subject.otherWind effect
dc.subject.otherWestern boundary current
dc.subject.otherWest Indian Ocean
dc.subject.otherMozambique
dc.subject.otherMozambique Channel
dc.subject.otherAgulhas current
dc.subject.otherMadagascar
dc.subject.otherEast Africa
dc.subject.otherIndian Ocean Islands
dc.subject.otherAfrique
dc.subject.otherFréquence
dc.subject.otherModèle
dc.subject.otherEquation primitive
dc.subject.otherAnomalie
dc.subject.otherTourbillon
dc.subject.otherChenal
dc.subject.otherOcéan Indien
dc.subject.otherAction vent
dc.titleMadagascar: A pacemaker for the Agulhas Current system?
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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