RV Investigator Voyage IN2022_V03 EM122 Multibeam Echosounder Data

• Other Authors: CSIRO (hasAssociationWith), CSIRO NCMI (hasAssociationWith), CSIRO O&A, Information & Data Centre (pointOfContact), CSIRO Oceans & Atmosphere - Hobart (hasAssociationWith), Data Officer (CN), Hobart (processor), GSM Support (pointOfContact), GSM data request (hasAssociationWith), GSM data request (hasOriginator), Vandenbossche, Phil (originator)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; geoscientificInformation; Ship: Investigator (RV); Marine National Facility; Research Voyage: IN2022_V03; Earth Science | Oceans | Bathymetry/Seafloor Topography; Marine Features (Australia) | Derwent Estuary; TAS; Coastal Waters (Australia) | Tasmania Coast; Global / Oceans | Southern Ocean; Multibeam Echosounder - EM122; Sea-floor depth below surface of the water body; Sea-floor surface hardness; Density of the water body; research vessel; multi-beam echosounders; Southern Ocean
• Online Access: https://researchdata.edu.au/rv-investigator-voyage-echosounder-data/2047515

Maintenance and Update Frequency: asNeeded Statement: Original field data. Processed data are SV corrected, GPS tide applied using EGM2008 model and edited using CARIS version 11.4.7 Credit "Data collected on the Marine National Facility (MNF) RV Investigator voyage IN2022_V03.","The MNF must be acknowledged in all outputs derived from Data and/or Samples collected by, or with support from, the MNF. Acknowledge the MNF in outputs with the statement: “We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” Acknowledgment and citations should be in all forms of publication including presentations (where the acknowledgement should be on the closing slide), journals, books, reports and related research outputs." This record describes multibeam echosounder data collected on RV Investigator voyage IN2022_V03, "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania", which departed Hobart on the 4th May 2022 and returned to Hobart on the 15th May 2022 (AEST). The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn backscatter during the voyage. 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 223 *.all files totaling 10.9 GB of raw bathymetry/backscatter data and 223 *.wcd files totaling 14.6GB of watercolumn 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. GPS tide was computed using the EGM2008 model and 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 ...