This record describes the operations undertaken and geological sample data collected on the RV Investigator Charter Voyage IN2015_C01, titled "Great Australian Bight (GAB) Deep Water Geological and Benthic Ecology Program." This charter voyage took place from Hobart to Port Lincoln between the 22nd of October and the 28th of November, 2015. The voyage, undertaken over 34 days, was a great success with 37 researchers from seven research organisations and the vessel crew undertaking 128 operations over 17 target areas in water depths ranging from 700 m to 5,437 m. The voyage deployed a diverse and large collection of instrumentation fully utilising the Investigator capabilities. This involved the deployment of some of the equipment types significantly deeper than previous deployments either in Australia or worldwide. The data and samples collected significantly augment the sparse data and sample collections within the deep water GAB to date. Over 1.36 tons of rock and 15.2 m of sediment core were collected. This record contains data recorded during the survey including the activity log, observation log, operation log, acoustic contact log, a log of general photographs taken, descriptions of geology collected, biology catch locations, details of sample taken for analysis, daily science reports produced, project details and the daily "Trip" details which defined the daily reporting periods. Images or documents of geological samples, cores and acoustic contacts can be accessed and downloaded via the Distribution links below. Physical pieces of rock collected on this voyage were sampled for geochemical analysis. Remainders of the rocks have been archived at the Perth Core Library, 37 Harris Street, Carlisle, WA 6101 phone +61 8 9470 0305.

This record describes the operations undertaken and geological sample data collected on the RV Investigator Charter Voyage IN2017_C01, titled "Great Australian Bight (GAB) Deep Water Geological and Benthic Ecology Program." This charter voyage took place from and to Hobart between the 11th and the 27th of April, 2017. The voyage, undertaken over 17 days, was a great success with 31 researchers from five research organisations and the vessel crew undertaking 47 operations over 6 target areas in water depths ranging from 200 m to 5,437 m. The voyage deployed a diverse and large collection of instrumentation fully utilising the Investigator capabilities. This involved the deployment of some of the equipment types significantly deeper than previous deployments either in Australia or worldwide. The data and samples collected significantly augment the sparse data and sample collections within the deep water GAB to date. Over 1.28 tons of rock were collected. This record contains data recorded during the survey including the activity log, observation log, operation log, acoustic contact log, a log of general photographs taken, descriptions of geology collected, biology catch locations, details of samples taken for analysis, project details and the daily "Trip" details which defined the daily reporting periods. Images or documents of geological samples and acoustic contacts can be accessed and downloaded via the Distribution links below. Physical pieces of rock collected on this voyage were sampled for geochemical analysis. Remainders of the rocks have been archived at the Perth Core Library, 37 Harris Street, Carlisle, WA 6101 phone +61 8 9470 0305.

This record describes the Towed Camera video stills taken on the RV Investigator Charter Voyage IN2015_C01, titled "Great Australian Bight (GAB) Deep Water Geological and Benthic Ecology Program." This charter voyage took place from Hobart to Port Lincoln between the 22nd of October and the 28th of November, 2015. The voyage, undertaken over 34 days, was a great success with 37 researchers from seven research organisations and the vessel crew undertaking 128 operations over 17 target areas in water depths ranging from 700 m to 5,437 m. 23 towed camera operations were undertaken across the survey extents in water depths less than 3000m. Video data was collected for each of these operations. The collection of stills extracted from the towed camera videos can be obtained by contacting the data librarians or the person listed as the individual responsible for the data.

This record describes the Towed Camera video stills taken on the RV Investigator Charter Voyage IN2017_C01, titled "Great Australian Bight (GAB) Deep Water Geological and Benthic Ecology Program." This charter voyage took place from Hobart to Port Lincoln between the 11th and the 27th of April, 2017. The voyage, undertaken over 17 days, was a great success with 31 researchers from five research organisations and the vessel crew undertaking 47 operations over 6 target areas in water depths ranging from 200 m to 5,437 m. 3 towed camera operations were undertaken across the survey extents in water depths less than 3000m. Video data was collected for each of these operations. The collection of stills extracted from the towed camera videos can be obtained by contacting the data librarians or the person listed as the individual responsible for the data.

This record describes XBT data collected on RV Investigator research charter IN2015_C01, 'GAB deep water geological and benthic ecology program,' which departed Hobart on the 25 October and returned to Port Lincoln on the 28 November. A short sea trial voyage (October 22 - 25, Hobart - Hobart) was undertaken prior to the charter. Data for those days is also included in this data set. A total of 19 XBT casts were conducted over the duration of this voyage. Data are stored in netCDF files at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes scientific split-beam echosounder data collected on RV Investigator research charter, IN2015_C01, 'GAB deep water geological and benthic ecology program' which departed Hobart on the 25 October and returned to Port Lincoln on the 28 November. A short sea trial voyage (October 22 - 25, Hobart - Hobart) was undertaken prior to the charter. Data for those days is also included in this data set. The Simrad EK60 split beam echosounders 18, 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data during the voyage. Data are stored in .raw, .bot and *.idx format at CSIRO. There are 6795 files totalling 102 GB of raw data in this dataset. No processing has been conducted on this data. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes the Underway (UWY) data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2017_C01, titled: "Great Australian Bight deep water geological and benthic ecology ". The voyage took place between 11 to 27 April 2017 departing from Hobart (TAS) and returning to Hobart (TAS). Standard Underway data is continuously recorded, consisting of: (1) Navigation data (NAV): Latitude, Longitude, Speed, Heading, Course Over Ground, Gyros, and Doppler Log (dual GPS instrument). (2) Thermosalinograph (TSG): Water Salinity, Flow-Rate, Temperature, Fluorescence, pCO2, Optode temperature and Oxygen. (3) Atmospheric (MET): Humidity, Wind Speed and Direction (vane and ultrasonic), Radiometer/Sea Surface Temperature, Pyranometer/Solar Radiation, Photosynthetically Active Radiation (PAR), Air Temperature, Air Pressure, Rain, Ozone and Trace Gases (port and starboard instruments). Data are recorded at 5 second intervals. Near real-time data are available via the link "Visualisation tool for Underway Data." This dataset has been processed and archived within the CSIRO Oceans & Atmosphere (O&A) Information and Data Centre (IDC) in Hobart (TAS). Data are available at time intervals of 5 sec (NetCDF format), 10 sec and 5 min (ASCII format). Additional information regarding this dataset is contained in the Voyage Summary and/or the Data Processing Report for this voyage.

This record describes multibeam echosounder data collected on RV Investigator research charter, IN2015_C01, 'GAB deep water geological and benthic ecology program' which departed Hobart on the 25 October and returned to Port Lincoln on the 28 November. A short sea trial voyage (October 22 - 25, Hobart - Hobart) was undertaken prior to the charter. Data for those days is also included in this data set. The Kongsberg EM710 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter. The EM710 provides a 0.5° by 1° transmit and receive angular resolution respectively. The echosounder's nominal frequency range is from 70 to 100 kHz. Data are stored in .all raw format for bathymetry and backscatter and .wcd format for watercolumn backscatter at CSIRO. There are 65 files totalling 4.93 GB of raw data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format is corrected for motion and position. Tide corrections were not applied to the processed data. Processed data had outliers removed. Processed line data are available in *.gsf and ascii format, and processed bathymetry and backscatter grids in geotiff format. Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes the Underway (UWY) data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2015_C01, titled: "GAB deep water geological and benthic ecology program" The voyage took place between 22 October to 28 November 2015, departing from Hobart (TAS) and arriving in Port Lincoln (SA) Standard Underway data is continuously recorded, consisting of: (1) Navigation data (NAV): Latitude, Longitude, Speed, Heading, Course Over Ground, Gyros, and Doppler Log (dual GPS instrument). (2) Thermosalinograph (TSG): Water Salinity, Flow-Rate, Temperature, Fluorescence, pCO2 and Optode/Oxygen. (3) Atmospheric (MET): Humidity, Wind Speed and Direction (vane and ultrasonic), Radiometer/Sea Surface Temprature, Pyranometer/Solar Radiation, Photosynthetically Active Radiation (PAR), Air Temperature, Air Pressure, Rain, Ozone and Trace Gases (port and starboard instruments). Data are recorded at 5 second intervals. Near real-time data are available via the link "Visualisation tool for Underway Data." This dataset will be processed and archived within the CSIRO Oceans & Atmosphere (O&A) Information and Data Centre (IDC) in Hobart (TAS). Data are available at time intervals of 5 sec (NetCDF format), 10 sec and 5 min (ASCII format). Additional information regarding this dataset is contained in the Voyage Summary and/or the Data Processing Report for this voyage.

This record describes sub bottom profiler data collected on RV Investigator research charter IN2015_C01, 'GAB deep water geological and benthic ecology program,' which departed Hobart on the 25 October and returned to Port Lincoln on the 28 November. A short sea trial voyage (October 22 - 25, Hobart - Hobart) was undertaken prior to the charter. Data for those days is also included in this data set. The Kongsberg SBP120 (sub bottom profiler) was used to acquire data containing the specular reflections at different sediment interfaces below the seafloor. The SBP120 provides a 3° by 3° angular resolution. The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP120 was logged [continuously/sporadically] for the extent of the voyage. Data are stored in .raw (1271 files 25.0 GB) raw and .seg ( 1267 files 24.9 GB) segy formats at CSIRO. The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping, an attribute calculation for instantaneous amplitude and time variable gain. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request