IN2024_V04 East Australian Current Bathymetry 10m - 210m Multi-resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2024_V04 titled "Linking East Australian current dynamics and submarine canyon geomorphology to marine ecosystem hotspots". The voyage took place between June 7 and July 3, 2024, departing from Sydney (NSW) and arriving in Brisbane (QLD).

The purpose of this voyage was to conduct a geophysical, oceanographic and biological survey of seafloor canyons along the continental shelf off NSW Solitary Canyon (~30.1°S, within the Central Eastern Marine Park) and the Richmond Canyon (~28.4°S). This research sought to better understand coastal-ocean exchange processes that are key controllers of coastal ocean properties and are important to marine ecosystem functioning. The data collected will improve our understanding of coastal-open ocean interaction mediated by the East Australian Current and their influence on climate, leading to more reliable forecasts for coastal communities and improved management of east coast fisheries. A small survey dedicated to a suspected paleo-shoreline was conducted on the shelf near Solitary Canyon. This survey involved mapping an area of approx. 13 x 3.5 km using the EM710 and running a crossline with the SBP120. A shipwreck survey over the MV Noongah was performed off the NSW coast, including a comprehensive multibeam survey with the EM710 and drop camera footage. This survey was conducted as a piggyback project for Heritage NSW and The Sydney Project to confirm the identity of the wreck.

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 East Australian Current produced from the processed EM122 and EM710 bathymetry data.