Locations of ice edges on 18 north-south transects of the BROKE voyage of the Aurora Australis (AA V4 1995/96). Locations determined from direct observations by the seabird observers on board. The fields in this dataset are: Latitude Longitude Ice Conditions Transect

A collection of scanned logs and documentation from the BROKE cruise of the Aurora Australis in the 1995/1996 season. Available logs include: BROKE V4 1995/1996 Catch Composition - 2 Logs BROKE V4 1995/1996 Krill Larvae Log BROKE V4 1995/1996 Krill Morphometrics - 3 logs BROKE V4 1995/1996 Trawl Log BROKE V4 1995/1996 Wet Lab Log See the logs for further details.

This data represents the total collection of acoustic, underway and satellite data collected on voyage 7 of the Aurora Australis in the 2003-04 season. For online access to the underway data for voyage 7 2003-04, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.

A major goal of a research expedition by the Australian Antarctic Division over the summer of (2003/04) in the Southern Ocean off Heard Island was to answer some of the questions needed to determine what level of exploitation of Southern Ocean fisheries is sustainable. The use of novel equipment, cutting edge technology and some adept logistical co-ordination allowed the Aurora Australis, on the Southern Ocean, to catch the prey of the predators of Heard Island. This work was accomplished by placing satellite trackers on animals at Heard Island, and then, using the ARGOS system, monitoring their activities in the Southern Ocean around the island. The Aurora Australis assisted in the monitoring and tracking of the animals by searching the areas the animals were foraging for prey species. The animals tracked in this experiment were: Light-mantled sooty albatrosses black-browed albatrosses king penguins macaroni penguins Antarctic fur seals The columns in this data file are: individual_id - the identifier of the individual animal species - the species name of that animal pttid - the identifier of the PTT tracker deployed on that animal deployment_longitude - the longitude at which the tracker was deployed deployment_latitude - the latitude at which the tracker was deployed observation_date - the date (ISO8601 format) of the position observation year, month, day, time, time_zone - as per the observation_date, but in separate columns locationclass - the ARGOS location class of the position (see http://www.argos-system.org/manual/3-location/34_location_classes.htm; value -3 corresponds to a "Z" class, value -2 to "B", value -1 to "A") latitude - the latitude of the position observation longitude - the longitude of the position observation

Antarctic marine diatoms are sensitive to environment change. This project will determine the environmental niches occupied by key diatom species in Antarctic sediments. This will allow climate changes in the past to be interpreted from Holocene sediments and future changes in diatom biogeography to be predicted. Environmental manipulation and competition experiments using diatoms will identify the response of key taxa to environment modification. Understanding the environmental factors governing their distribution and natural variability will provide a basis to interpret palaeo-environment records, and allow predictions how this temperature-sensitive ecosystem will respond to future change. Diatoms for the experiments were collected in 2002 (Aurora Australia, Voyage 1) and 2003 (Aurora Australis, Voyage 1). On each occasion water from the ship's online seawater tap was filtered through a 20 micrometre plankton net for up to one hour into a sample jar. A portion of the sample was preserved in lugol's iodine for later phytoplankton analysis, and the rest of the sample maintained alive in the dark in seawater at a constant low temperature. The live sample is maintained at the AAD for culturing and environment manipulation and competition experiments. Project 2302 Twenty-two water samples were collected from 24/10/02 to 11/11/02, in open seawater between 53 degrees 50 degrees S and 65 degrees 50 degrees S. At each site, the following were recorded from the ship's data logger: latitude, longitude, date, UCT time, local time, water depth, salinity, water temperature, chlorophyll A, UV radiation, and conductivity.

This data represents the total collection of acoustic, underway and satellite data collected on voyage 1 of the Aurora Australis in the 2004-05 season. For online access to the underway data for voyage 1 2004-05, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.

Oceanographic data were collected on Aurora Australis Voyage 4 2003/2004, from December 2003 to February 2004, and a calibrated data set was created. The oceanographic program on the voyage was a part of the cruise-determining fish survey in the vicinity of Heard Island. A total of 42 CTD vertical profile stations were taken, most to within 5 m of the bottom. Over 450 Niskin bottle samples were collected and analysed on board, for calibration of the CTD conductivity sensors. Nutrient samples were also collected, but not analysed. Near surface current data were collected using a ship mounted ADCP. Data from the array of ship's underway sensors are included in the data set. The data report describes the processing/calibration of the CTD and ADCP data, and gives important details concerning data quality. An offset correction was derived for the underway sea surface temperature and salinity data, by comparison with near surface CTD data. These data form part of the overall dataset for ASAC project 2388 (ASAC_2388).

Environmental manipulation and competition experiments on cultured and natural diatoms will identify the response of key taxa to environment modification. Understanding the environmental factors governing diatom distribution and natural variability will provide a basis to interpret palaeo-environment records, and allow predictions how this temperature-sensitive ecosystem will respond to future change. Environmental manipulation and competition experiments using diatoms will identify the response of key taxa to environment modification. Understanding the environmental factors governing their distribution and natural variability will provide a basis to interpret palaeo-environment records, and allow predictions how this temperature-sensitive ecosystem will respond to future change. Diatoms for the experiments were collected in 2002 (Aurora Australia, Voyage 1) and 2003 (Aurora Australis, Voyage 1). On each occasion water from the ship's online seawater tap was filtered through a 20 micrometre plankton net for up to one hour into a sample jar. A portion of the sample was preserved in lugol's iodine for later phytoplankton analysis, and the rest of the sample maintained alive in the dark in seawater at a constant low temperature. The live sample is maintained at the AAD for culturing and environment manipulation and competition experiments. Project 2364 Twelve water samples were collected from 23/10/03 to 27/10/03, in open seawater between 60 degrees 45' S and 50 degrees 02' S. At each site, the following data were recorded from the ship's data logger: latitude, longitude, UTC time, local time, water depth, salinity, water temperature, fluorescence, UVB, and conductivity.

This data represents the total collection of acoustic, underway and satellite data collected on voyage 2 of the Aurora Australis in the 2003-04 season. For online access to the underway data for voyage 2 2003-04, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.

This data represents the total collection of acoustic, underway and satellite data collected on voyage 1 of the Aurora Australis in the 2003-04 season. For online access to the underway data for voyage 1 2003-04, see its specific metadata record, or the marine science database. The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them. An index sheet to the dataset is available as an excel download.