Date (Creation)

2020-10-13

Date (Revision)

2020-10-13

Date (Publication)

2020-10-13

Date (released)

2020-10-13

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/48dcef16-6719-45e5-a335-3a97f099e451

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01405

Codespace

https://data.bas.ac.uk/

Unique resource identifier

NE/R012296/1

Codespace

award

Other citation details

Please cite this item as: Linse, K., Grant, S., Whittle, R., Reid, W., McKenzie, M., Federwisch, L., Polfrey, S., & Apeland, B. (2020). Benthic seafloor images from Prince Gustav Channel and Duse Bay, Eastern Antarctic Peninsula, March 2018 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/48dcef16-6719-45e5-a335-3a97f099e451

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Linse, Katrin		Author
British Antarctic Survey	Grant, Susie		Author
British Antarctic Survey	Whittle, Rowan		Author
Newcastle University	Reid, William		Author
Museums Victoria	McKenzie, Melanie		Author
Alfred Wegener Institute	Federwisch, Luisa		Author
British Antarctic Survey	Polfrey, Scott		Author
British Antarctic Survey	Apeland, Bjorg		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency

As needed

Maintenance note

Completed

Global Change Master Directory (GCMD) Science Keywords

• EARTH SCIENCE > Biosphere > Ecological Dynamics > Biodiversity
• EARTH SCIENCE > Oceans > Marine Biology > Marine Habitat
• EARTH SCIENCE > Oceans > Marine Environment Monitoring

Theme

• Antarctic

• benthic biodiversity

• faunal assemblage

• habitat heterogeneity

• vulnerable marine ecosystems

Place

• Antarctic Peninsula, Duse Bay, Prince Gustav Channel, Anderson Island Antarctica

GEMET - INSPIRE themes, version 1.0

• Habitats and biotopes
• Oceanographic geographical features

Access constraints

Other restrictions

Other constraints

no limitations to public access

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

License

Other constraints

Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

Use constraints

Other restrictions

Other constraints

This data is governed by the NERC data policy and supplied under Open Government Licence v.3

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Biota
• Environment
• Oceans

Begin date

2018-03-02

End date

2018-03-08

Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)

2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier

urn:ogc:def:crs:EPSG::3031

Version

6.18.3

Hierarchy level

Dataset

Statement

Methodology:

The in-situ underwater still images and short videos were gathered with BAS' Shallow Underwater Camera System (SUCS) during the expedition JR17003a of RRS James Clark Ross to the eastern Antarctic Peninsula in March 2018.

The SUCS for JR17003a comprised three units:

1. The UIC unit consisting of (i) the PC with monitor, (ii) the cable metering sheave indicator and (iii) the deck box.

2. The deck unit consisting of (i) the winch, (ii) UW-cable, (ii) the deck monitor and (iii) the metering sheave on the mid-ships gantry.

3. The UW-unit of the tripod consisting of (i) the UW-housing including the camera, booster and power distribution board, (ii) the UW-light, and (iii) the USBL.

The SUCS includes 1000 m of fibre-optic cable, allowing operation to approximately 900m depth. The LabView interface together with the fibre-optic upgrade enables high- resolution photo stills (2448 x 2050) and video footage (720 x 480) to be taken simultaneously. The field of view when the SUCS is standing on the seafloor is covering 0.51 m2 of seafloor.

The SUCS and Agassiz gears, when both deployed at the same site, increase the value of the data obtained. This is because specimens trawled in the latter and identified by detailed morphological inspection or using molecular methods improve the likelihood and confidence of correct identifications of individuals seen in the SUCS images.

The SUCS was deployed at 12 stations (ranging in depth from 200 m to 800 m), according to weather and accessibility due to ice conditions. The SUCS was used extensively during the time when heavier gear could not be operated due to problems with the 30t winch, allowing coverage of a wider range of depth stations.

On one occasion SUCS deployment was delayed because of very cold temperatures (-15°C) affecting the backlight of the winch monitor screen. This was resolved by re-routing the image output to an alternative monitor, and using a portable heater for subsequent deployments.

Normal protocol involved three consecutive photo transects, the direction of which was determined by the bridge according to wind direction (to allow the ship to sit comfortably in dp), each 100 m apart, with each complete transect consisting of 10 photos, themselves each 10 m apart. Duplicates of each photo were taken with different light levels, to allow distinguishing of different features. At two locations the three transects were not fully completed because of icebergs in close vicinity to the ship or problems with gear. Additional photos were sometimes taken during the 10 m relocation if the camera showed a good view, however these photos will not be included in subsequent analysis. Short videos using the SUCS camera were taken at some transect points or during relocations.

Data collection:

The Shallow Underwater Camera System with Labview SUCS software and Prosilica camera system developed by the British Antarctic Survey, http://vocab.nerc.ac.uk/collection/B76/current/B7600022/.

High- resolution photo stills (2448 x 2050) covering 0.51 m2 of seafloor and video footage resolution (720 x 480).

Data quality:

Standard protocols for SUCS deployment and image capture were followed. Data entry of SUCS' image geolocation data was linked to vessel's USBL system. Data entry of image number was double checked by independent person.

Metadata

File identifier

48dcef16-6719-45e5-a335-3a97f099e451 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2020-10-13

Metadata standard name

ISO 19115 Geographic Information - Metadata

Metadata standard version

ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact