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Citation
Post, A. (2017, updated 2017) Characterisation of seafloor imagery from the Sabrina Coast continental shelf Australian Antarctic Data Centre - doi:10.4225/15/59c1e3535d6d7
Title
Characterisation of seafloor imagery from the Sabrina Coast continental shelf
Data Centre
Australian Antarctic Data Centre, Australia
DOI
doi:10.4225/15/59c1e3535d6d7
Created Date
2017-09-20
Revision Date
2017-09-20
Parent record
None

Description

A total of 701 still images were analysed from 10 transects on the Sabrina Coast continental shelf. Imagery was collected from the RVIB Nathaniel B Palmer (NBP 14-02, 29 January - 16 March 2014) across a greater than 3000 km2 area. A 'yoyo' camera, with downward facing digital still and video cameras mounted within a tubular steel frame, was deployed on a coaxial cable to image the seafloor. The Ocean Imaging Systems DSC 10000 digital still camera (10.2 megapixel, 20 mm, Nikon D-80 camera) was contained within titanium housing. Camera settings were: F-8, focus 1.9 m, ASA-400. An Ocean Imaging Systems 3831 Strobe (200 W-S) was positioned 1m from the camera at an angle of 26 degrees from vertical. A Model 494 bottom contact switch triggered the camera and strobe at 2.5m above the sea floor, imaging ~ 4.8m2 of sea floor. Parallel laser beams (10 cm separation) provided a reference scale for the images. Transects were conducted at a ship's speed of ~1 knot.
Still images were characterised for main taxonomic groups and sediment properties based on the CATAMI scheme of Althaus et al. 2015.

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Purpose

Characterisation of seafloor habitats and taxa on the Sabrina Coast continental shelf.

Quality

Location information is based on the ship position, and interpolated along the track for the images based on start and end latitude and longitude and ship's speed. Positions are not corrected for layback between the vessel and the towed body.

Access

These data are publicly available for download from the provided URL.

Temporal Coverages

Spatial Coverages

Science Keywords

Additional Keywords

  • IMAGES
  • BENTHIC TAXA

Locations

  • GEOGRAPHIC REGION > POLAR
  • OCEAN > SOUTHERN OCEAN
  • CONTINENT > ANTARCTICA

Platforms

  • R/V Nathaniel B. Palmer
  • SHIPS

Instruments

  • DEEP TOWED CAMERA

Researchers

  • post, alix (INVESTIGATOR,TECHNICAL CONTACT,DIF AUTHOR)

Use Constraints

Data should be cited as: Post, A.L., Lavoie, C., Domack, E.W., Leventer, A., Shevenell, A., Fraser, A.D., 2017. Environmental drivers of benthic communities and habitat heterogeneity on an East Antarctic shelf. Antarctic Science 29, 17-32.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4320_NBP14-02_seafloor_imagery_data when using these data.

Creative Commons License