IN2023_V03 Southern Ocean Time Series Bathymetry 10m - 210m Multi-resolution AusSeabed products
This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2023_V03 titled "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania". The voyage took place between May 11 and May 25, 2023, departing fro...
| Format: | Dataset |
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| Language: | unknown |
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Commonwealth Scientific and Industrial Research Organisation
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| Online Access: | https://doi.org/10.25919/a9tg-6m15 https://researchdata.edu.au/in2023v03-southern-ocean-ausseabed-products/3378840 https://data.csiro.au/collection/csiro:62720 http://hdl.handle.net/102.100.100/635752?index=1 |
| Summary: | This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2023_V03 titled "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania". The voyage took place between May 11 and May 25, 2023, departing from Hobart (TAS) and arriving in Hobart (TAS).\n\nThe purpose of this voyage was to deploy a new set of SOTS moorings (SOFS-12 and SAZ-25) and then recover the existing SOTS moorings (SOFS-11 and SAZ-24). \n\nThis dataset is published with the permission of CSIRO. Not to be used for navigational purposes.\n\nThe dataset contains bathymetry grids of 10m to 210m resolution of the Southern Ocean Time Series produced from the processed EM122 and EM710 bathymetry data.\nLineage: Multibeam data was logged from the EM’s in Kongsberg’s proprietary *.all format and was converted to be processed within CARIS HIPS and SIPS version 11.4.18. Data were imported into the HIPS project using EM Height and the vessel file appropriate for either the EM122 or EM710. Navigation and motion imports were set to Automatic which for this voyage imported the Seapath 330+ position and motion. GPS tide was computed using the EGM2008 model EGM_2008_1Min_Aust_WGS84.csar. TPU values were computed using Measured Sound Velocity = 0.5 and Surface Sound Velocity = 0.2. The raw files were analysed for noise and cleaned manually. The data was then gridded at the highest resolution possible and further inspected for outliers. \n\nThe data was then gridded at multiple resolutions in python Caris batch script using a Depth filter Vs Resolution guideline derived from AusSeabed Multibeam guidelines v2 and further inspected for outliers. Final raster products are available in L3 folder of this collection. Final processed data were also exported per line as GSF and ASCII format and available in the L2 folder of this collection. |
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