Brief description
This record describes the towed video component from the from the Marine National Facility (MNF) RV Investigator research voyage IN2019_T02, titled "Deep seascapes of the Great Barrier Reef: Uncovering submarine canyons and landslides." The voyage took place between October 4 and October 14, 2019 departing from Brisbane (QLD) and arriving in Darwin (NT). Four 1500 m video transects were undertaken across a range of geomorphic features and depth gradients focussed on a deep hole feature within and adjacent to the Wessel Marine Park, on October 11, 2019. The benthic environment in the study area was highly turbid with strong currents, and associated imagery can therefore only be used for habitat classification, coarse morphospecies identification, or defining broad biological communities. Onboard habitat annotations are included as an excel file, with camera positioning included. For access to other End of Voyage (EOV) data from IN2019_T02, see https://catalogue.aodn.org.au/geonetwork/srv/eng/metadata.show?uuid=54158abf-7d02-4e66-8529-48ba6e286d63Lineage
Maintenance and Update Frequency: notPlanned
Statement: Towed imagery transects were selected using seabed mapping from multibeam operations. Towed imagery operations followed national protocols, with the exception that the recommended downward-facing stills camera was substituted with the forward-facing stills camera on the vessel’s deep-tow system. Underwater imagery was acquired with the Marine National Facility’s Deep-Towed Camera system. The camera was towed for approximately 1000 m at 1 – 1.5 knots (~30 minutes) along geomorphic and depth gradients of the seafloor. See final survey report for full methods (https://www.nespmarinecoastal.edu.au/wp-content/uploads/2024/01/Przeslawski_2020_D4_M11_Wessel-Post-Survey-Report.pdf)
Statement: Data collected as part of NESP/GA/CSIRO MNF Survey IN2019_T02 (RV Investigator).
Notes
CreditThis data was collected on the Marine National Facility (MNF) RV Investigator voyage IN2019_T02.
Purpose
To characterise habitats of targeted areas within Wessel Marine Park, providing crucial baseline information to better understand and manage this marine park, including those sites sacred to local indigenous communities.
To characterise habitats of targeted areas within Wessel Marine Park, providing crucial baseline information to better understand and manage this marine park, including those sites sacred to local indigenous communities.
Data time period: 2019-10-11 to 2019-10-11
text: westlimit=136.75; southlimit=-11.00; eastlimit=136.85; northlimit=-10.90
Subjects
Biological Sciences |
EARTH SCIENCE | BIOSPHERE | ECOSYSTEMS | MARINE ECOSYSTEMS |
Ecology |
Marine National Facility |
Marine and Estuarine Ecology (Incl. Marine Ichthyology) |
Research Transit: IN2019_T02 |
Ship: Investigator (RV) |
biota |
geoscientificInformation |
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Other Information
(View annotated video tows and select highlight clips in Seamap Australia)
uri :
https://seamapaustralia.org/map/#5db8a6d0-8098-4893-967a-9c96676d1e7f
(PUBLICATION - Wessel post-survey report)
(Associated record in Geoscience Australia catalogue)
uri :
https://pid.geoscience.gov.au/dataset/ga/144143
global : 27a2ecfb-0d7d-4333-af4a-4fb0049be6b6
Identifiers
- global : c5bc7619-46c3-4773-b64e-cdce82c444e1
