|
|
|
|
|
| Faure, Vincent; Arhan, Michel; Speich, Sabrina; Gladyshev, Sergey. |
| ARGO hydrographic profiles, two hydrographic transects and satellite measurements of air-sea exchange parameters were used to characterize the properties and seasonal heat budget variations of the Surface Mixed Layer (SML) south of Africa. The analysis distinguishes the Subtropical domain (STZ) and the Subantarctic Zone (SAZ), Polar Frontal Zone (PFZ) and Antarctic Zone (AZ) of the Antarctic Circumpolar Current. While no Subantarctic Mode Water forms in that region, occurrences of deep SML (up to similar to 450 m) are observed in the SAZ in anticyclones detached from the Agulhas Current retroflection or Agulhas Return Current. These are present latitudinally throughout the SAZ, but preferentially at longitudes 10-20A degrees E where, according to previous... |
| Tipo: Text |
Palavras-chave: Ocean surface mixed layer; Heat budget; Southern Ocean; Agulhas Current retroflection. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00048/15953/15833.pdf |
| |
|
|
| Dencausse, Guillaume; Arhan, Michel; Speich, Sabrina. |
| A 12 7-year series of weekly absolute sea surface height (SSH) data in the region south of Africa is used for a statistical characterization of the location of the Agulhas Current retroflection and its variations at periods up to 2 years The highest probability of presence of the retroflection point is at similar to 39 5 S/ 18-20 E The longitudinal probability density is negatively skewed A sharp eastward decrease at 22 E is related to detachments of the Agulhas Current from the continental slope at this longitude The asymmetry in the central part of the distribution might reflect a westward increase of the zonal velocity of the retroflection point during its east-west pulsations The western tail of the distribution reveals larger residence times of the... |
| Tipo: Text |
Palavras-chave: Agulhas Current retroflection; Indo Atlantic exchanges; Altimetry; Spatio temporal variations. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00019/13040/11314.pdf |
| |
|
|
|
