Data Trawler - Survey Details

IN2023_V02    - is a Marine National Facility voyage

Title: Gigantic submarine landslide offshore western Tasmania: risk mitigation for shelf-derived tsunami in Australia

Voyage details on MNF site: https://mnf.csiro.au/en/Voyages/IN2023_V02

Period: 2023-03-23 21:13 to 2023-04-29 22:00 UTC

Duration: 37.03 days

From: Hobart To: Hobart

Region: Tasmania Coast

Ship: Investigator (RV) [details]

Description:

Offshore western Tasmania, a gigantic 450km3 submarine landslide shows as an abrupt headscarp failure. At our knowledge, this submarine landslide has never been examined in detail before, despite being a remarkably sharp morphology on bathymetric maps. This project investigates the geomorphology and biodiversity of this region with four research aims:

1. To assess the morphology and internal structure of the submarine landslide to model transport and sedimentation processes of submarine landslides and associated mass flows.
2. Unravel the causes of failure of this submarine landslide and calculate the tsunamigenic potential of similar shelf collapses around Australia. Based on quantitative data collect at sea, numerically model tsunami inundation and use this model as representative example for tsunami risk mitigation for coastal Australia.
3. Map the offshore continuation of major fault zones and the highly mineralised Mount Read Volcanics to extend our understanding of the geology and tectonism of Tasmania. Map potential prospective resources on the shallow shelf.
4. Increase the knowledge of seafloor habitat features and associated biodiversity within this region and understand the drivers of the spatial distribution of seafloor biodiversity and nutrients in relation to concentration of nutrients in water, ocean currents (including upwelling) and fine-scale geomorphological variations.

Leader: Martin Jutzeler (UTAS)

Projects:

• Gigantic submarine landslide offshore western Tasmania: risk mitigation for shelf-derived tsunami in Australia [details] Primary

• ARGO float deployment [details] Piggy-back

• Blythe Star Shipwreck Survey + Opportunistic Seafloor Mapping [details] Piggy-back

Underway data from NRUD - see this voyage
Voyage extents: 44° 10.3' S to 42° 29.5' S    141° 50.5' E to 147° 37.1' E Get voyage track shapefile Get CSV

Marlin Metadata:-

Participants - on ship:- Click on column header to sort

Participants - shore based:- Click on column header to sort

This list includes those that may have only been on part of the voyage. See voyage reports on 'Reports and Maps' tab for details.

MNF Reports

• IN2023_V02 Hydrology Data Processing Report - details of data processing steps, calibration information, instruments used and any issues with the data.

• IN2023_V02 Voyage Plan - includes objectives, investigator details, proposed data collection, voyage track and equipment to be used.

• View Survey map

Data publishing

This is a list of online datasets hosted by CSIRO. Other processed datasets hosted by collaborating organisations may be found on the 'Metadata' tab.
Use the Get data link on the right to extract data using the NCMI Data Trawler.

Deployments - None have been recorded in the Data Trawler.