IN2018_V02 Southern Ocean Time Series Bathymetry 10m - 210m Multi-resolution AusSeabed products

Brief description

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2018_V02 titled "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania; and Subantarctic Biogeochemistry of Carbon and Iron, Southern Ocean Time Series site". The voyage took place between March 3 and March 21, 2018 departing from Hobart (TAS) and arriving in Hobart (Tas).

The purpose of this voyage was to first deploy a new set of SOTS moorings (SOFS-7 and SAZ-20) and then
recover the existing SOTS moorings (SOFS-6 and SAZ-19).

This dataset is published with the permission of CSIRO. Not to be used for navigational purposes.

The dataset contains bathymetry grids of 10m to 210m resolution of the Southern Ocean Time Series produced from the processed EM122 and EM710 bathymetry data.
Lineage: 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 10.3.3 on the CARIS4 PC. Once the raw files were converted into the HIPS and SIPS using the appropriate vessel file, either EM122 or EM710, the data was merged and then analysed for noise. The data was then gridded at the highest resolution possible and further inspected for outliers.

The 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.