Dreutter, Simon; Purser, Autun; Hehemann, Laura; Boetius, Antje (2017): Forward looking sonar data collected along OFOBS profiles during POLARSTERN cruise PS101 (ARK-XXX/3) [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.874128
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Abstract:
The Ocean Floor Observation System (OFOS), used during Polarstern research cruise PS101 to the Langseth Ridge in the Central Arctic, was 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). The cameras were mounted on a steel frame (150L x 92W x 105H cm), together with two strobe lights (iSiTEC UW-Blitz 250, TTL driven), three parallel 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 OFOS during deployments. For PS101 the OFOS was upgraded to additionally mount an EdgeTech 2205 bathymetric side scan and a BlueView M900-130 forward looking sonar systems, to become the Ocean Floor Observation and Bathymetry System (OFOBS).
The M900-130 has a total horizontal opening angle of 130°, divided into 512 beams of 0.18° x 20° (horizontal x vertical). It operates at an acoustic frequency of 900 kHz, resulting in a sharp image wedge with ranges up to 100 m. The ping rate of the the OFOBS M900 is triggered by the 2205 sonar, resulting in ping rates of around 3 Hz during PS101.
The M900 FLS was mounted in the upper front of the OFOBS subsea unit, about 65 cm above the bottom edge of the steel frame with an angle of 5° downward from the horizontal.
Related to:
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
Boetius, Antje; Roessler, Sebastian (2016): Underwater track data from USBL system IXSEA Posidonia during POLARSTERN cruise PS101 (ARK-XXX/3), links to track files in 1 sec resolution. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.869118
Dreutter, Simon; Purser, Autun; Hehemann, Laura; Boetius, Antje (2017): Side scan sonar and swath bathymetry collected along OFOBS profiles during POLARSTERN cruise PS101 (ARK-XXX/3). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.873046
Purser, Autun; Hehemann, Laura; Dreutter, Simon; Boetius, Antje (2017): Seabed photographs taken along OFOS profiles during POLARSTERN cruise PS101 (ARK-XXX/3). Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.871550
Project(s):
Coverage:
Median Latitude: 85.967524 * Median Longitude: 52.655684 * South-bound Latitude: 80.026170 * West-bound Longitude: 14.236830 * North-bound Latitude: 86.976330 * East-bound Longitude: 62.003170
Date/Time Start: 2016-09-11T17:09:00 * Date/Time End: 2016-10-16T12:24:00
Minimum Elevation: -4003.2 m * Maximum Elevation: -213.0 m
Event(s):
PS101/010-1 * Latitude Start: 80.028500 * Longitude Start: 30.056330 * Latitude End: 80.026170 * Longitude End: 30.135670 * Date/Time Start: 2016-09-11T17:09:00 * Date/Time End: 2016-09-11T18:16:00 * Elevation Start: -275.4 m * Elevation End: -258.2 m * Sensor URI: https://hdl.handle.net/10013/sensor.7548e68e-18c6-48ac-8826-8de6c45b4bbe * Location: Barents Sea * Campaign: PS101 (ARK-XXX/3) * Basis: Polarstern * Method/Device: Ocean Floor Observation and Bathymetry System (OFOBS)
PS101/089-1 * Latitude Start: 86.704000 * Longitude Start: 61.226500 * Latitude End: 86.734670 * Longitude End: 61.481670 * Date/Time Start: 2016-09-18T09:28:00 * Date/Time End: 2016-09-18T14:51:00 * Elevation Start: -616.5 m * Elevation End: -685.3 m * Location: Arctic Ocean * Campaign: PS101 (ARK-XXX/3) * Basis: Polarstern * Method/Device: Ocean Floor Observation and Bathymetry System (OFOBS)
PS101/100-1 * Latitude Start: 86.823330 * Longitude Start: 61.940170 * Latitude End: 86.797830 * Longitude End: 61.852170 * Date/Time Start: 2016-09-19T14:32:00 * Date/Time End: 2016-09-19T17:24:00 * Elevation Start: -967.4 m * Elevation End: -757.2 m * Location: Arctic Ocean * Campaign: PS101 (ARK-XXX/3) * Basis: Polarstern * Method/Device: Ocean Floor Observation and Bathymetry System (OFOBS)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Purser, Autun | |||
| 2 | Date/Time of event | Date/Time | Purser, Autun | |||
| 3 | Latitude of event | Latitude | Purser, Autun | |||
| 4 | Longitude of event | Longitude | Purser, Autun | |||
| 5 | Elevation of event | Elevation | m | Purser, Autun | ||
| 6 | Date/Time of event 2 | Date/Time 2 | Purser, Autun | |||
| 7 | Latitude of event 2 | Latitude 2 | Purser, Autun | |||
| 8 | Longitude of event 2 | Longitude 2 | Purser, Autun | |||
| 9 | Elevation of event 2 | Elevation 2 | m | Purser, Autun | ||
| 10 | File size | File size | kByte | Purser, Autun | ||
| 11 | Uniform resource locator/link to file | URL file | Purser, Autun | Forward looking sonar systems, BlueView, M900-130 | SON files; see description of format at http://www.blueview.com/documentation/ProViewer-SDK-4.0-Manual/ |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
28 data points