IN2023_V07 Southern Ocean Bathymetry 5m - 210m Multi-resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2023_V07 titled "FOCUS – Fine-scale Observations of the ACC Under SWOT". The voyage took place between November 15 and December 20, 2023, departing from Hobart (TAS) and arriving in Hobart (TAS).

The purpose of this voyage was to significantly improve our capability to observe and understand the impact of small-scale (10-100 km) motions on dynamics of the Antarctic Circumpolar Current (ACC). The novel Surface Water Ocean Topography (SWOT) satellite mission aimed to provide, for the first time, measurements of sea surface height along a broad swath, with spatial resolution at least 10X better than traditional altimeters. While SWOT provided unprecedented spatial and temporal coverage, in situ subsurface ocean measurements were essential to validate the satellite observations and to determine the relationship between small-scale variability in sea surface height and subsurface ocean circulation and dynamics.

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

The dataset contains bathymetry grids of 5m to 210m resolution of the Southern Ocean produced from the processed EM122 and EM710 bathymetry data.