Purser, Autun; Hass, H Christian; Hoge, Ulrich (2020): Seabed photographs taken along OFOBS profile HE502_8-1 during HEINCKE cruise HE502 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.919843, In: Purser, A et al. (2020): Seafloor images collected by the Ocean Floor Observation and Bathymetry System (OFOBS) during HEINCKE cruise HE502, Bremerhaven - Bremerhaven, 2017-12-01 - 2017-12-20 [dataset publication series]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.919847
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Abstract:
The OFOBS system consisted of a towed underwater camera system equipped with both a high-resolution photo-camera (iSiTEC, CANON EOS 5D Mark III) and a high-definition video-camera (iSiTEC, Sony FCB-H11) as well as an integrated sidescan sonar system. The cameras were mounted on a steel frame (140L x 92W x 135H cm), together with two strobe lights (iSiTEC UW-Blitz 250, TTL driven), three laser pointers spaced with a distance of 50 cm used to estimate the size of seafloor structures, four LED lights, and a USBL positioning system (Posidonia) to track the position of the OFOBS during deployments, with additional positioning information provided by the integrated INS and DVL systems, which was undergoing testing during this cruise.
In this dataset seabed photos from a height of approximately 60 cm from the seafloor, depicting an area of approximately 1.5 m**2, with variations depending on the actual height above ground of the system. Conditions were not optimal, with many particles in the water and considerable ship heave.
Further details:
Coverage:
Median Latitude: 54.162620 * Median Longitude: 7.937505 * South-bound Latitude: 54.158760 * West-bound Longitude: 7.923320 * North-bound Latitude: 54.166480 * East-bound Longitude: 7.951690
Date/Time Start: 2017-12-03T12:41:00 * Date/Time End: 2017-12-03T15:29:00
Minimum Elevation: -29.8 m * Maximum Elevation: -21.6 m
Event(s):
HE502_8-1 * Latitude Start: 54.166480 * Longitude Start: 7.951690 * Latitude End: 54.158760 * Longitude End: 7.923320 * Date/Time Start: 2017-12-03T12:41:00 * Date/Time End: 2017-12-03T15:29:00 * Elevation Start: -29.8 m * Elevation End: -21.6 m * Location: North Sea * Campaign: HE502 * Basis: Heincke * Method/Device: Ocean Floor Observation System (OFOS)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File name | File name | Purser, Autun | |||
| 2 | File size | File size | kByte | Purser, Autun | ||
| 3 | Uniform resource locator/link to image | URL image | Purser, Autun | |||
| 4 | Uniform resource locator/link to file | URL file | Purser, Autun |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2584 data points
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