Seabed imagery from IN2017_V01, Sabrina Seafloor survey, East Antarctica

<p>Six camera tow transects were completed during survey IN2017-V01 on the RV Investigator in January to March 2017. This survey focussed on the upper slope and outer continental shelf on the Sabrina Coast seafloor in East Antarctica. Camera tows targeted seafloor depths between 480 and 1680 m. Imagery was collected using the Marine National Facilities Deep Tow Camera. This system collects oblique downward facing still images with a Canon 1DX and high definition video with a Canon C300. Four DSP&L 3150 High Output SeaLite Sphere lights were used, with MicroSeaLasers providing a 10cm scale guide on the images. Several sensors are also attached to the towed body, including a SBE 37 for CTD measurements, a Kongsberg Mesotech – 1007D altimeter, a Druck PMP 5074 pressure sensor and two Sonardyne USBLs for locational accuracy of the towed body. The USBL failed for tow A008CAM02, with locations recorded as ship’s position instead and camera position based on layback calculations. Images failed to record on A004CAM01, with only 2 images saved. Due to a timing error between the images and the other sensors, there is an offset between the CTD, altimeter and pressure data and the images. This is currently being resolved by the MNF. Tows were designed to run down slope to reduce potential for colliding with the bottom. All tows were run with a ship speed over the ground of approximately 2 kt. All still images were saved in jpeg format with video footage recorded to HD1080i50 format. The video data is unclipped and includes descent and ascent in the water column. Following collection still images were colour corrected in Adobe Photoshop to remove the blue bias.


<p>Images are available on the NCI with the following file structure:

<p>MARINE IMAGERY COLLECTION

<p>└─ PLATFORM_NAME

<p> └─ CAMPAIGN_NAME

<p> └─ DEPLOYMENT_NAME

<p> ├─ images/

<p> └─ metadata.csv

<p>Where

<p>- PLATFORM_NAME is the name of the platform (e.g. Towed still imagery, Towed video imagery)

<p>- CAMPAIGN_NAME is the name of a campaign (e.g. IN2017_V01)

<p>- DEPLOYMENT_NAME is the name of the deployment or dive (e.g. IN2017_V01_A04_CAM01 is the voyage name, following by station number, followed by camera tow number)

<p>- images/ is a directory containing video and still image files

<p>- metadata.csv is a file containing position info and references to image files (e.g. timestamp, image_filename, depth from sensor on camera frame, altitude, CTD temperature, conductivity, pressure, dissolved oxygen, salinity, latitude, longitude and depth from USBL unless otherwise specified, comments)


<p>We thank the Marine National Facility, the IN2017-V01 scientific party-led by the Chief Scientists L.K. Armand and P. O’Brien, MNF support staff and ASP crew members led by Capt. M. Watson for their help and support on board the RV Investigator. This dataset is published with the permission of the CEO, Geoscience Australia and according to MNF data policy.

Simple

Identification info

Date (Creation)
2018-03-20T09:25:00
Date (Publication)
2018-03-21T22:28:20
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/116582

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.4225/25/5ab2dc0b1000b

Cited responsible party
Role Organisation / Individual Name Details
Author

Post, A.L.
Principal investigator

Armand, L.
Principal investigator

O'Brien, P.E.
Status
Point of contact
Role Organisation / Individual Name Details
Custodian

Post, A.L.

Commonwealth of Australia (Geoscience Australia)

 Voice
Resource provider

EGD

Commonwealth of Australia (Geoscience Australia)

 Voice
Spatial representation type
Topic category
  • Geoscientific information

Extent

Temporal extent

Time period
2018-01 2018-03

Extent

N
S
E
W


Maintenance and update frequency
As needed
Australian and New Zealand Standard Research Classification: Fields of Research

  • Landscape Ecology

Place

  • East Antarctica

Keywords

  • seafloor

Discipline

  • marine ecology

Australian and New Zealand Standard Research Classification: Fields of Research

  • Earth Sciences

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

Resource constraints

Title

Australian Government Security ClassificationSystem

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

Distribution format

  • imagery

    Distributor contact
    Role Organisation / Individual Name Details
    Distributor

    Geoscience Australia

    		 Voice
    OnLine resource

    THREDDS link to NCI

    THREDDS link to NCI

  • imagery

    Distributor contact
    Role Organisation / Individual Name Details
    Distributor

    Geoscience Australia

    		 Voice
    OnLine resource

    File location at NCI

    File location at NCI

  • html

    Distributor contact
    Role Organisation / Individual Name Details
    Distributor

    Geoscience Australia

    		 Voice
    OnLine resource

    Digital Object Identifier

    Digital Object Identifier

Resource lineage

Statement

Not supplied

Hierarchy level
Dataset

Metadata constraints

Title

Australian Government Security ClassificationSystem

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

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

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/7d5aa8ef-864b-4b62-b501-2c2767aa02a5

Title

GeoNetwork UUID

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

Post, A.L.

Commonwealth of Australia (Geoscience Australia)

 Voice

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/116582

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/7d5aa8ef-864b-4b62-b501-2c2767aa02a5

Date info (Creation)
2018-02-26T03:08:30
Date info (Revision)
2018-04-20T05:50:19

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

marine ecology seafloor
Australian and New Zealand Standard Research Classification: Fields of Research
Earth Sciences Landscape Ecology

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Associated resources

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