From December 2014 to February 2015, Geoscience Australia conducted a multibeam sonar survey (GA-0348) of the coastal waters around Casey station and the adjacent Windmill Islands. The survey utilised GA's Kongsberg EM3002D multibeam echosounder, motion reference unit and C-Nav differential GPS system mounted on the Australian Antarctic Division's (AAD) science workboat the Howard Burton. The survey was a collaborative project between GA, the AAD and the Royal Australian Navy (RAN). During the survey a total of approximately 27.3 square kilometres of multibeam bathymetry, backscatter and water-column data were collected, extending coverage of a RAN multibeam survey (survey number HI545) conducted the previous season (approximately 7 square kilometres). The regions covered extended seaward of Newcomb Bay and Clark Peninsula northwest of Casey Station, and seaward of Shirley and Beall Islands to the southwest. Complimentary datasets were also collected, including 18 drop video deployments to assess the benthic ecosystem composition and 39 sediment samples to ground-truth the seafloor substrate. Macroalgae spectral analyses were also collected to develop a spectral library for possible future satellite bathymetry investigations. The new high-resolution bathymetric grid (1 metre resolution) reveals seafloor features in the Casey area in unprecedented detail.

Geoscience Australia, the Royal Australian Navy (RAN) and the Australian Antarctic Division (AAD) conducted a hydrographic and seafloor characterisation survey in nearshore waters offshore from Davis Station in the Australian Antarctic Territory. Multibeam bathymetry data was acquired during January-February 2017 and a high-resolution (2 m) bathymetry grid produced for the survey area.

The RAN Australian Hydrographic Service conducted hydrographic survey HI560 at Casey, December 2014 to February 2015. The survey was conducted jointly with Geoscience Australia. The survey area was offshore from Clark Peninsula south to Beall Island, but not including Newcomb Bay and O'Brien Bay which were surveyed in 2013/14 (see the metadata record with ID HI545_hydrographic_survey). A multibeam sonar system was used. The survey dataset, which includes the Report of Survey, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office. The RAN Australian Hydrographic Service team was lead by LCDR G.A.Walker. The data are not suitable for navigation.

The geomorphology was digitised using contours derived from the DEM created by Dr. R. Beaman from James Cook University for Geoscience Australia. The data, the metadata record and the report related to the creation of that DEM are available on the Geoscience Australia website: Name of data set: Kerguelen Plateau Bathymetric Grid 2010 Catalogue number: 71552 https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search?node=srv#/metadata/a05f7893-007f-7506-e044-00144fdd4fa6 Digitising: It must be stressed that neither seismic data, sea floor sediments, nor sea floor biota were used to determine the sea floor geomorphology. The description on how the geomorphology was derived is described in the attached report. The features described as slopes from the 900m to 1300m isobaths and from the 1300m to 2500m isobaths were identified for fisheries purposes and not geomorphology purposes. A geomorphologist may combine these slopes into a single feature. Some of the larger shallow features identified as banks may more properly be identified as plateaus. It would require a more in depth analysis of the DEM, slopes and sediments to accurately identify the feature as a bank or plateau.

These data were collected on the SIPEX II voyage of the Aurora Australis in 2012. These data are floe-scale maps of Antarctic sea ice draft (m). These were collected using a multibeam instrument attached to an autonomous underwater vehicle (AUV). This AUV was the WHOI 'SeaBED-class' vehicle named 'Jaguar'. Details on the deployment and processing of this data can be found in Williams, Maksym and Wilkinson et al., 2014 (Nature Geoscience). Data are provided for SIPEX-II stations 3, 4 and 6. Station 3: October 3 2012, located at 121.03E 64.95S Station 4: October 9 2012, located at 120.87E 65.13S Station 6: October 12 2012, located at 120.02E 65.25S Data are provided on grids with 50cm horizontal spatial resolution. For each station, the mean and variance of the sea ice draft, along with the number of observations in each grid cell, are provided. Data are provided in ESRI ASCII grid format and comma-separated (CSV) text files. CSV files do not include grid cells with no observations.

The TOMO-DEC experiment was organized in three main legs: (1) a search for sites to deploy seismic stations and for temporary camps to accommodate the researchers (austral summer 2003-2004); (2) the field phase of data collection during the austral summer 2004-2005; and finally (3) a laboratory phase of data gathering, organization and analysis, that still ongoing as papers continue to be published. The preliminary analysis of data involved an initial phase of data gathering from instruments of different types, their organization in a joint database, their conversion to a common format and, finally, the determination of the first P-wave arrival times. Leg 1 was performed during two summer field expeditions (2002-2003 and 2003-2004). The whole island was surveyed (including glacial areas) in order to identify potential sites for seismic stations and camps. Leg 2 took place between December 2004 and March 2005 with most of the activity focused in the deployment of seismic stations (on land and OBSs), air-gun shooting, data collection and final recovery of the majority of the seismic stations. This experiment took place between January 4 and January 24, 2005. Ninety-five on-land seismic stations and 14 OBSs were deployed. They included 7 Lennartz Marslite seismic stations (covering 14 positions), four M24 instruments (covering 7 positions) and 11 seismic arrays (with 84 short period sensors, occupying a total of 101 different positions), all of them working in continuous recording mode. Active seismic sources were generated using an array of air-guns with a maximum capacity of 3520 cubic inches. Together with the seismic waveforms, a final dataset consisting of travel times for more than 70000 crustal P-wave first arrivals was collected. Bathymetric data were recorded using both EM120 and EM-1002 multi-beam sounders and a SIMRAD EA-600 single-beam sounder. Magnetic profiles were obtained using the MarineMagnetics SEASPY marine magnetometer on the base of an Overhauser sensor. Finally gravimetric data were acquired using the marine gravimeter BELL AEROSPACE-TEXTRON BGM-3. In total more than 1000 km of profiles were acquired with all types of data. The experiment at Deception Island was organized in collaboration with several research institutions. For the field work and data collection the following institutions (with number of researchers and provided instruments) participated: Instituto Andaluz De Geofisica, Spain (12, 10 land seismic arrays of malIAG type); Lamont Doherty Earth Observatory, Columbia University, USA (4, 14 OBS); INGV-Osservatorio Vesuviano, Italy (1, 7 land stations of Marslite type); INGV-Catania, Italy (1, 4 land stations of M24 type); CENAPRED, Mexico (1); Universidad De Cadiz, Spain (2); Universidad De Colima, Mexico (1); University College Dublin, Ireland (1); Universidad Complutense De Madrid, Spain (1); Universidad De La Plata, Argentina (1); University Of Washington, USA (3); USGS Volcanic Hazard Team, USA (2).

Data are automatically and manually collected from a range of sensors on board Australian Antarctic Program vessels. From the 2021-2022 season onwards, this typically means the RSV Nuyina. The RSV Nuyina presently has approximately 90 instruments available to produce data. The instruments that contribute data to a specific dataset can be found in that voyages instrument coverage document. In addition the data from the instruments, the RSV Nuyina can also record data from spaces on the ship such as the containerised laboratories or the Wet Well. The RSV Nuyina also has a science tender which includes four instruments as well. Previous datasets from the Aurora Australis generally comprised only "underway data" - such as weather data, water temperatures, and so on. Data from the Nuyina are much broader in scope and more detailed. For full details for each dataset, see the associated child record. Oceanographic instruments that typically record data continuously throughout RSV Nuyina voyages include the Eco fluorometer, LISST-200X particle size analyser, Phytoflash flurometer, SeaFET pH sensor, SBE38 thermometer, SBE45 thermosalinograph, SBE63 oxygen sensor and the PC02 system. Oceanographic and mapping instruments that typically record data intermittently throughout voyages include the ADCP38, ADCP150, EK80 hull system, EK80 dropkeel system, Hydrophones dropkeel system, MS70 fisheries sonar, Multibeam EM712, Multibeam EM122, TOPAS sub-bottom profiler, SH90 fish finding sonar, sound velocity sensors, Ice Wave Radar and the ISAR infrared sea surface temperature system. Meteorological instruments that typically record data continuously throughout voyages include the WMT700 ultrasonic anemometers, UVB radiometer, CGR3 pyrgeometer, CMP3 global solar radiometer, CUV5 broadband UV radiometer, PQS1 photosynthetically active radiometer, CL31 Ceilometer, HMP155 air temperature and humidity sensor, PWD22 present weather and visibility sensor, PTB330 digital barometer and the all sky imager. Deployable instruments that typically record data intermittently throughout voyages include the XBT, RBR concerto CTD, sound velocity profiler, NUTTS instruments and CTD instruments. Operational and positioning instruments that record data continuously throughout voyages include the Gyro compass, GPS compass, IPMS alarm system and webcams. Operational and positioning instruments that record data intermittently throughout voyages include the winches, USBL, Hydrophones hull system, draught sensor, speedlog, echosounder 50 KHz, echosounder 200 KHz, seapath380 systems, acoustic net monitors, Arc-X radar and the hull stress and ice load monitor.

This dataset contains the Voyage Data from Voyage 2 2021-22 collected during RSV Nuyina’s maiden voyage to Antarctica. This purpose of this voyage was a combination of commissioning trials, ice trials and a resupply voyage. The voyage departed Hobart and visited Davis station, Casey station, and the Vanderford Glacier before returning to Hobart. Throughout the voyage, operations related to ice trials and commissioning the science systems were conducted. As the instruments were commissioned, the data produced was included in the Voyage Dataset. It should be noted that many of the instruments were uncalibrated and, therefore, data recorded from these instruments may be erroneous. Oceanographic instruments that recorded data continuously throughout RSV Nuyina voyages include the Eco fluorometer, LISST-200X particle size analyser, Phytoflash flurometer, SeaFET pH sensor, SBE38 thermometer, SBE45 thermosalinograph and the SBE63 oxygen sensor. Oceanographic and mapping instruments that recorded data intermittently throughout the voyage include the ADCP38, ADCP150, EK80 hull system, EK80 dropkeel system, hydrophones dropkeel system, MS70 fisheries sonar, multibeam EM712, multibeam EM122, TOPAS sub-bottom profiler and the sound velocity sensor drop keel system. Meteorological instruments that record data continuously throughout the voyage include the WMT700 ultrasonic anemometers, UVB radiometer, CGR3 pyrgeometer, CMP3 global solar radiometer, CUV5 broadband UV radiometer, PQS1 photosynthetically active radiometer, CL31 Ceilometer, HMP155 air temperature and humidity sensor, PWD22 present weather and visibility sensor, PTB330 digital barometer and the all sky imager. Deployable instruments that recorded data throughout the voyage include the XBT, RBR concerto CTD, sound velocity profiler, NUTTS instruments and CTD instruments. Operational and positioning instruments that recorded data continuously through the voyage include the gyro compass, IPMS alarm system and webcams. Operational and positioning instruments that recorded data intermittently throughout the voyage include the winches, USBL, hydrophones hull system, draught sensor, speedlog, echosounder 50 kHz, echosounder 200 kHz and seapath380 systems. A list of the instruments used on the voyage is available in the file, "instrument_coverage_202122020.pdf" at the top level of the dataset. To find information on the science systems themselves and the headers for the data please refer to "voyage_202122020_data_description.pdf".