Cossa O. auteur aut IRD Pous S. auteur aut IRD Penven Pierrick auteur aut IRD Capet X. auteur aut IRD Reason C. J. C. auteur aut IRD text journalArticle eng text/pdf born digital access The objective of this study is to document and shed light on the circulation around the Delagoa Bight region in the southern Mozambique Channel using a realistic modelling approach. A simulation including mesoscale forcings at the boundaries of our regional configuration succeeds in reproducing the general circulation in the region as well as the existence of a semi-permanent cyclonic eddy, whose existence is attested by in situ measurements in the Bight. Characterised by a persistent local minimum in SSH located around 26 degrees S-34 degrees E, this cyclonic eddy termed herein the Delagoa Bight lee eddy occurs about 25% of the time with no clear seasonal preference. Poleward moving cyclones, mostly generated further north, occur another 25% of the time in the Bight area. A tracking method applied to eddies generated in Delagoa Bight using model outputs as well as AVISO data confirms the model realism and provides additional statistics. The diameter of the eddy core varies between 61 and 147 km and the average life time exceeds 20 days. Additional model analyses reveal the systematic presence of negative vorticity in the Bight that can organise and form a Delagoa Bight lee eddy depending on the intensity of an intermittent southward flow along the shore and the spatial distribution of surrounding mesoscale features. In addition, the model solution shows other cyclonic eddies generated near Inhambane and eventually travelling through the Bight. Their generation and pathways appears to be linked with large Mozambique Channel rings. specialized Delagoa Bight Cyclonic lee eddy Coastal countercurrent Numerical model Mozambique Channel Shelf processes MOZAMBIQUE CANAL 032 020 119 14-29 2016 0278-4343 https://www.documentation.ird.fr/hor/fdi:010066839 10.1016/j.csr.2016.03.006 0278-4343 [F B010066839] https://www.documentation.ird.fr/hor/fdi:010066839 https://www.documentation.ird.fr/intranet/publi/2016/05/010066839.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2016-06-02 2017-08-23 fdi:010066839 fre