IN2022_V07 Northern Great Barrier Reef Bathymetry 10m - 100m AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2022_V07 titled "HALO - Halimeda bioherm Origins, function and fate in the northern Great Barrier Reef." The voyage took place between August 15, 2022 and September 7, 2022 (AEST), departing from Brisbane and returning to Cairns.\n\nProject HALO conducted detailed survey operations at three sites (Ribbon Reef, Cormorant Reef and Tijou Reef) with Halimeda bioherms on the northern Great Barrier Reef (GBR) shelf and the directly adjacent, deeper offshore areas. The shelf work aimed to conduct dense grids of geophysical lines at the three bioherm sites, representing the variety of morphological sub-types, and spread between the Ribbon Reef and Tijou Reef study areas. The transits between the shelf sites were also important to investigate additional Halimeda bioherm areas, paleo-channels, inter-reef passages and the connections to the upper-slope and canyons wherever possible. A comprehensive survey and sampling were also conducted to explore the paleo-channel at Princess Charlotte Bay/Lowry Passage. The deep offshore work was conducted at the end of the voyage at offshore Princess Charlotte Bay and the Ribbon Reef.\n\nPiggyback project:\nDinoflagellates & broader planktonic assemblage observation.\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 100m resolution of the northern Great Barrier Reef produced from the processed EM122, EM2040c and EM710 bathymetry data.\nLineage: 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.