European Directory of Marine Environmental Data (EDMED)

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Data set name

Autosub Under Ice (AUI) Programme Data Set (2003 - 2005)

Data holding centreBritish Oceanographic Data Centre
CountryUnited Kingdom  United Kingdom
ProjectAutosub Under Ice
Time period2003 - 2005
Geographical area

Arctic Region: Greenland Sea, Denmark Strait. Southern Ocean: Amundsen Sea, Ross Sea, Weddell Sea


Horizontal spatial co-ordinates; Transmittance and attenuance of the water column; Variable fluorescence parameters; Electrical conductivity of the water column; Dissolved oxygen parameters in the water column; Chlorofluorocarbon concentrations in the water column; Vertical velocity of the water column (currents); Bathymetry and Elevation; Sediment grain size parameters; Salinity of the water column; Horizontal velocity of the water column (currents); Seabed photography; Sediment acoustics; Temperature of the water column; Sediment water content, porosity and surface area; Snow and ice mass, thickness and extent; Geological sample density; Turbulence in the water column


Current profilers; CTD; bathythermographs; multi-beam echosounders; underwater cameras; benthos samplers; discrete water samplers; salinity sensor; >2000 Hz top-bandwidth sub-bottom penetrator and mud profiler systems; snow and ice samplers


The Autosub Under Ice (AUI) data set comprises hydrographic measurements including temperature, salinity, fluorescence, attenuance, dissolved oxygen concentrations and current velocities. Water samples were also collected for salinity and geochemical analysis, and the data set also includes bathymetric and sediment data. The measurements were collected near Greenland and Antarctica in the respective summer seasons for each hemisphere during 2003, 2004 and 2005. The programme consisted of four cruises onboard the ice-capable research vessel RRS James Clark Ross (JCR106, JCR106B, JCR84, JCR97). Data were collected by both shipboard sensors and those attached to the Autosub (an Autonomous Underwater Vehicle) package. Shipboard data collection included deployment of a conductivity-temperature-depth (CTD) package with attached auxiliary sensors. Lowered acoustic Dopper current profilers (LADCPs) were also attached to the CTD frame, while discrete water samples were collected from the CTD stations. Oceanographic, bathymetric and sediment data were collected along the ship's track, while further current data were collected from two mooring deployments. Autosub measurements included standard environmental parameters and acoustic instruments were used to measure ice shelf, sea ice and ocean bottom relief at high resolution. A camera was also attached to the vehicle, permitting the collection of detailed photographs of the seabed. Autosub had been upgraded to achieve 1000 km range and 2500 m water depth, which provided unprecedented access to ice covered regions. The AUI programme was established to investigate the marine environment of floating ice shelves with a view to advancing our understanding of their role in the climate system. It brought together researchers and engineers from a number of UK institutions, with the project being coordinated by the National Oceanography Centre, Southampton.

OriginatorsNational Oceanography Centre, Southampton
Southampton Oceanography Centre

Unknown (2008), Unknown

Data web site
OrganisationBritish Oceanographic Data Centre
ContactPolly Hadžiabdić (Head of the BODC Requests Team)

British Oceanographic Data Centre
Joseph Proudman Building 6 Brownlow Street
L3 5DA
United Kingdom

Telephone+44 (0) 782 512 0946
Collating centreBritish Oceanographic Data Centre
Local identifier1048102
Global identifier218
Last revised2010-09-16