The paper reports work currently in progress and presents estimates for ocean circulation in the Scotia Sea. The estimates are derived from the drift rates of giant icebergs calved in the Weddell Sea since 1974. Comparison with other estimates is limited by the lack of studies reported in the literature, however, efforts to make these comparisons are in hand.
Abstract:
Current velocity data from a single time realisation of the FRAM model are presented for particular areas of the Scotia Sea. The regions are based on the CCAMLR sub-areas and also include a more detailed area around South Georgia. Mean current velocities have been calculated for region boundaries over the upper 250m of the water column. These have been combined with estimates of krill density and standing stocks to consider the large scale flux of krill through the regions and estimate residence times
Abstract:
A methodology is described which when applied to data from an acoustic survey will yield mean krill density along an arbitrary section through the survey area, giving results compatible with the specifications given in wg-krill-93 Appendix D. A program written to calculate such sections is also described and example output displayed. A similar program calculates current speeds normal to a section given an oceanographic dataset of current direction and speed. The two programs produce compatible vectors of krill density and current speed along specified sections
