RV Investigator Voyage IN2017_V01 EM122 Multibeam Echosounder Data

• Other Authors: CSIRO (hasAssociationWith), CSIRO O&A, Information & Data Centre (pointOfContact), CSIRO Oceans & Atmosphere - Hobart (hasAssociationWith), CSIRO/Oceans and Atmosphere (hasAssociationWith), Data Officer (DW), Hobart (processor), Vandenbossche, Phil (originator)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; geoscientificInformation; Ship: Investigator (RV); Marine National Facility; Research Voyage: IN2017_V01; Earth Science | Oceans | Bathymetry/Seafloor Topography; Coastal Waters (Australia) | Tasmania Coast East and Southeast; TAS; Global / Oceans | Southern Ocean; Continents | Antarctica; Multibeam Echosounder - EM122; Sea-floor depth below surface of the water body; Sea-floor surface hardness; Density of the water body; multi-beam echosounders; research vessel; Southern Ocean; Kongsberg; Totten Glacier; Antarc*; Antarctica
• Online Access: https://researchdata.edu.au/rv-investigator-voyage-echosounder-data/1425047

Progress Code: completed Maintenance and Update Frequency: asNeeded Statement: Original field data. Processed data are SV corrected, tide not corrected and edited using CARIS version 9.1.9 This record describes multibeam echosounder data collected on RV Investigator voyage IN2017_V01, 'Interactions of the Totten Glacier with the Southern Ocean through multiple cycles. ‘Sabrina Seafloor Survey' which departed Hobart on the 14th January 2017 and returned to Hobart on the 5th March 2017. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information between Hobart and Totten Glacier. The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz. Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 1310 files totalling 32.9 GB of raw data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are 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 information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request.