• Product catalogue
  •  
  •  
  •  

Post-survey report: CANYONS - Cape Darnley paleoceanography from sediment cores IN2023_V01

The CANYONS voyage on R/V Investigator aimed to investigate past and present processes governing the flow pathways, formation and geochemical signatures of Antarctic Bottom Water (AABW) off Cape Darnley, East Antarctica. The proposed survey area was focussed on the Wild and Daly canyons and the adjacent sediment drifts - the Daly and ‘Armand’ drifts. The survey aimed to collect systematic multibeam bathymetry and sub-bottom profiles across the region to support collection of long sediment cores (up to 24 m), kasten cores and multicores, CTDs and deep towed camera transects.


Due to a medical evacuation 5 days after arriving in the survey area we were only able to partially map the northern part of Wild Canyon and the ‘Armand’ Drift, collect 1 piston core (15.2 m), 2 kasten cores and 2 CTDs. Some seafloor images were also obtained from a camera system mounted to the CTD frame. Sediment cores were sampled for physical properties, microfossil content, biostratigraphic markers, ancient DNA and various geochemical signatures. Water samples from the CTDs were collected for hydrochemistry, biogeochemistry and environmental DNA. Analysis of these datasets is currently underway and forms part of several PhD projects.


Underway water samples were collected during transit and within the survey area for hydrochemistry, biogeochemistry and environmental DNA (eDNA). In addition, a magnetometer was towed on the southward transit and a continuous plankton recorder on the northward transit. Aerosols were sampled throughout the survey for trace elements and bio-aerosols. Several Argo floats, including 2 biogeochemical Argo floats were deployed during the transit and in the survey area.


We undertook two days of opportunistic science within Two Peoples Canyon offshore Albany following the medical evacuation. This work focussed on characterising the seafloor biota of this poorly known region by undertaking 2 deep tow camera transects and 1 biological dredge. We also collected 3 CTDs and 1 kasten core to understand the modern and past oceanography in the context of previous work in the region.


Outreach was conducted throughout the voyage by our Sea2School program to Primary and High school students across Australia and internationally. We undertook public outreach via regular blogs, podcasts, posts to our CANYONS Twitter, Facebook and Instagram accounts and through media interviews.


Many of the science team were early career researchers and post-graduate students. They gained not only first-hand experience and skills in undertaking marine science at sea, but also in responding and adapting to rapidly changing situations with grace and resilience.

Simple

Identification info

Date (Creation)
2023-11-27
Date (Publication)
2024-11-27T07:22:25
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/149094

Citation identifier
Digital Object Identifier/https://dx.doi.org/10.26186/149094

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Commonwealth of Australia (Geoscience Australia)

Voice
Author

Post, A.

Space Division Internal Contact
Co-author

Bostock, H.

External Contact
Co-author

Chase, Z.

External Contact
Co-author

Noble, T.

External Contact
Co-author

Amarathunga, U.

External Contact
Co-author

Armbrecht, L.

External Contact
Co-author

Behrens, B.

External Contact
Co-author

Blanckensee, S.

External Contact
Co-author

Camac, A.

External Contact
Co-author

Carroll, A.

Place and Communities Internal Contact
Co-author

Creac’h, L.

External Contact
Co-author

Gunn, K.

External Contact
Co-author

Herweynan, D.

External Contact
Co-author

Hughes, P.

External Contact
Co-author

Husdell, M.

External Contact
Co-author

Jeromson, M.

External Contact
Co-author

Lalime, J.

External Contact
Co-author

Leplastrier, A.

Place and Communities Internal Contact
Co-author

Lowe, V.

External Contact
Co-author

Nanson, R.

Place and Communities Internal Contact
Co-author

Nau, A.

CSIRO External Contact
Co-author

Navidad, C.

External Contact
Co-author

Singh, P.

External Contact
Co-author

Surapaneni, V.

External Contact
Co-author

Trihey, J.

External Contact
Co-author

Wenderlich, M.

Place and Communities Internal Contact
Co-author

Williams, T.

External Contact
Name

GA Record

Issue identification

2024/57

Purpose

This Record provides a record and overview of the activities undertaken on a marine research voyage to the Cape Darnley region of East Antarctica as part of survey IN2023_V01.

Status
Completed
Point of contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

Voice
Resource provider

Space Division

External Contact
Point of contact

Post, A.

Space Division Internal Contact
Spatial representation type
Topic category
  • Geoscientific information

Extent

Extent

N
S
E
W


Maintenance and update frequency
As needed

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

theme.ANZRC Fields of Research.rdf
  • OCEANOGRAPHY

  • GEOPHYSICS

  • EARTH SCIENCES

  • Sedimentology

  • Marine Geoscience

Keywords
  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License
Other constraints

© Commonwealth of Australia (Geoscience Australia) 2024

Resource constraints

Title

Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified
Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

Voice facsimile
OnLine resource

Download the report (pdf) [24.2 MB]

Download the report (pdf) [24.2 MB]

Distribution format
  • pdf

    File decompression technique

    nil

Resource lineage

Statement

This Record provides a record and overview of the activities undertaken on a marine research voyage to the Cape Darnley region of East Antarctica as part of survey IN2023_V01.

Metadata constraints

Title

Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/a97a68c4-35e1-48e7-a77a-435555f4216f

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

Voice
Point of contact

Post, A.

Space Division Internal Contact

Type of resource

Resource scope
Document
Name

GA Record

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/149094

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/5167d912-6784-4371-9938-3931e84ca6f1

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/a97a68c4-35e1-48e7-a77a-435555f4216f

Metadata linkage

https://ecat.ga.gov.au/geonetwork/static9008124/eng/catalog.search#/metadata/a97a68c4-35e1-48e7-a77a-435555f4216f

Date info (Creation)
2019-04-08T01:55:29
Date info (Revision)
2019-04-08T01:55:29

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

theme.ANZRC Fields of Research.rdf
EARTH SCIENCES GEOPHYSICS Marine Geoscience OCEANOGRAPHY Sedimentology

Provided by

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •