Sea ice draft in the Weddell Sea, measured by upward looking sonars

Wave Measurements Using Upward Looking Sonars in Marginal and Polar Sea Ice Regimes

Copepods in sea ice of the western Weddell Sea during austral spring 2004

In the framework of the R.V. Polarstern expedition ‘‘Ice station POLarstern’’ (ISPOL) spatial and temporal trends in composition, abundance and age structure of sea ice inhabiting copepods were investigated in the western Weddell Sea during the transition from the spring to the summer state. For the spatial scale, sea-ice coring was performed at six locations on a transect from the ice edge to ...

Morphology of sea ice pressure ridges in the northwestern Weddell Sea in winter

[1] To investigate the morphology and distribution of pressure ridges in the northwestern Weddell Sea, ice surface elevation profiles were measured by a helicopter-borne laser altimeter during Winter Weddell Outflow Study with the German R/V Polarstern in 2006. An optimal cutoff height of 0.62 m, derived from the best fits between the measured and theoretical ridge height and spacing distributi...

Combined satellite- and ULS-derived sea-ice flux in the Weddell Sea

Several years of daily microwave satellite ice-drift are combined with moored Upward Looking Sonar (ULS) ice-drafts into an ice volume flux record at points along a flux gate across the Weddell Sea, Antarctica. Monthly ice transport varies at the mooring locations from a maximum export of 0.4 m s near Joinville Island to -0.4 ms imported along the Fimbul and Riiser Larsen ice shelf margins. Win...

C-band Backscatter Measurements of Winter Sea Ice in the Weddell Sea, Antarctica

During the 1992 Winter Weddell Gyre Study, a C-band scatterometer was used from the German ice-breaker R/V Polarstern to obtain detailed shipborne measurement scans of Antarctic sea ice. The frequency-modulated continuous-wave (FM-CW) radar operated at 4.3 GHz and acquired like(VV) and cross-polarization (HV) data at a variety of incidence angles (10-75). Calibrated backscatter data were record...