Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

German, Christopher R; Jakuba, Mike; Purser, Autun (2020): HROV images of the Karasik Seamount seafloor collected during POLARSTERN cruise PS101. PANGAEA, https://doi.org/10.1594/PANGAEA.921370

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
On the 30th September 2016 the Hybrid-Remote Operated Vehicle (HROV) 'Nereius Under Ice' (NUI) was used to conduct a ~12 hr dive to image in high resolution a 500 m x 500 m area of the Karasik seamount with a pair of cameras. These cameras were a bespoke system consisting of a down-looking stereo camera pair with synchronized strobes provided by O. Pizarro, Australian Centre for Field Robotics, University of Sydney, Australia. The survey dive was conducted at a speed of 0.7 m/s at a nominal flight height of 3 m, collecting images at a frequency of 1 per second.
The left camera collected a colour image of 1360 x 1024 pixels and the right a monocrome image of the same size each second. Each image covered approximately 2 sq. m of seafloor, depending on seafloor topography.
Navigation for the HROV, and therefore to georeference each collected image, was determined by Long Baseline Navigation, with relative position of subsequent collected images determined from the onboard Dynamic Velocity Logger (DVL).
In this dataset all ~12,000 collected raw images and position information are provided.
Images collected prior to 20:53:54 are of the lower water column, recorded on descent, and contain little information other than the presence of the occasional jellyfish etc. From 20:53:54 imaging of the seafloor with the colour camera was achieved, and at 21:08:13 the monochrome camera also commenced seafloor imaging.
Keyword(s):
Benthos; extreme environment; Geodia sp. High Arctic; Mobile sponges
Supplement to:
Morganti, Teresa M; Purser, Autun; Rapp, Hans Tore; German, Christopher R; Jakuba, Michael V; Hehemann, Laura; Blendl, Jonas; Slaby, Beate M; Boetius, Antje (2021): In situ observation of sponge trails suggests common sponge locomotion in the deep central Arctic. Current Biology, 31(8), R368-R370, https://doi.org/10.1016/j.cub.2021.03.014
Further details:
Boetius, Antje; Purser, Autun (2017): The Expedition PS101 of the Research Vessel POLARSTERN to the Arctic Ocean in 2016. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 706, 230 pp, https://doi.org/10.2312/BzPM_0706_2017
Coverage:
Median Latitude: 86.712056 * Median Longitude: 61.382532 * South-bound Latitude: 86.705323 * West-bound Longitude: 61.277260 * North-bound Latitude: 86.728422 * East-bound Longitude: 61.646121
Date/Time Start: 2016-09-30T20:50:00 * Date/Time End: 2016-09-30T22:29:59
Minimum DEPTH, water: 561.8 m * Maximum DEPTH, water: 622.7 m
Event(s):
PS101/168-1 * Latitude Start: 86.737830 * Longitude Start: 61.933170 * Latitude End: 86.737830 * Longitude End: 61.933170 * Date/Time Start: 2016-09-30T18:47:00 * Date/Time End: 2016-09-30T18:48:00 * Elevation Start: -691.1 m * Elevation End: -690.5 m * Location: Arctic Ocean * Campaign: PS101 (ARK-XXX/3) * Basis: Polarstern * Method/Device: Remote operated vehicle (ROV)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeGerman, Christopher RGeocode
2DEPTH, waterDepth watermGerman, Christopher RGeocode
3LATITUDELatitudeGerman, Christopher RGeocode
4LONGITUDELongitudeGerman, Christopher RGeocode
5ImageIMAGEGerman, Christopher Rleft camera (LC)
6ImageIMAGEGerman, Christopher Rright camera (RM)
7Image (File Size)IMAGE (Size)BytesGerman, Christopher Rleft camera (LC)
8Image (File Size)IMAGE (Size)BytesGerman, Christopher Rright camera (RM)
Size:
10896 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)