|
|
|
|
|
| Artana, Camila; Ferrari, Ramiro; Koenig, Zoe; Sennechael, Nathalie; Saraceno, Martin; Piola, Alberto R.; Provost, Christine. |
| We combined altimetric data and the in situ data sets from three 10 years apart mooring deployments to compute a coherent and accurate volume transport time series of the Malvinas Current (MC) at 41 degrees S. We used a method developed in Koenig et al. (2014) and explored three types of geostrophic shear to estimate the uncertainty derived from the lack of velocity data in the upper 300 m. The mean MC transport over 24 years in the upper 1,500 m is 37.12.6 Sv and the standard deviation 6.61 Sv. Since 1993, annual mean transports have varied from 32 to 41 Sv and the three in situ records corresponded to low annual mean transports. The MC transport time series is not stationary, its spectral content evolves with time showing significant energy at the 30-110... |
| Tipo: Text |
Palavras-chave: Malvinas Current; Transport; Time series; Altimetry; Moorings; Argentine Basin. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00481/59315/62076.pdf |
| |
|
|
| Spadone, Aurelie; Provost, Christine. |
| We present a set of new current meter measurements collected to monitor the Malvinas Current ( MC) near its merger with the Brazil Current at 40-41 degrees S from December 2001 to February 2003 below a Jason-1 altimeter track. These measurements are compared to former measurements obtained 8 years earlier at the same location; they also provide new information on the core of the MC on the continental slope above the 1000-m isobath where a mooring had been previously lost. There, most of the velocity variation is along-isobath (80% of the variance) and shows a significant annual cycle. The two data sets provide coherent means and statistical parameters on the vertical structure of the flow. A 14-year-long time series of MC volume transport is derived using... |
| Tipo: Text |
Palavras-chave: Malvinas Current; Transport; Interannual variations. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00481/59316/62073.pdf |
| |
|
|
|
