Abstract:
We report on the late winter oceanography observed beneath Antarctic sea ice offshore from the Sabrina and BANZARE coast of Wilkes Land, East Antarctica (115- 125 E) in September-October 2007 during the Sea Ice Physics and Ecosystem eXperiment (SIPEX) research voyage. A pilot program using specifically designed 'through-ice' Conductivity-Temperature-Depth (CTD) and acoustic Doppler current ... profiling (ADCP) systems was conducted to opportunistically measure water mass properties and ocean currents during major ice stations.
This project involved two independent sub-ice observation platforms: A winch-driven Conductivity-Temperature-Depth system for measuring basic water mass properties and an acoustic Doppler current profiling (ADCP)/GPS system for measuring ocean currents and ice drift. Hereafter these are referred to as the CTD and ADCP systems respectively.
The CTD system comprised of an Falmouth Scientific Institute (FSI) CTD instrument, a tripod and over 1000m of polyethylene rope on a winch/drum attached to a metal sled.
Latitude Resolution:
4 km
Longitude Resolution:
4 km
Horizontal Resolution Range:
1 km - < 10 km or approximately .01 degree - < .09 degree
Vertical Resolution:
250 m
Vertical Resolution Range:
100 meters - < 1 km
Temporal Resolution:
16 orbits per day
Temporal Resolution Range:
Daily - < Weekly
Quality
Scan Status is provided containing entries on a scan-by-scan basis. These entries include a geolocation flag and a data quality flag, indicating the percentage of pixels along each scan with values within a pre-defined ... range. Quality Flag is included that gives the overall error that affects the entire angle bin data, such as the error associated with the non-uniform beam filling effect and the surface reference reliability.
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