Meyer-Kaiser, Kirstin; Bergmann, Melanie; Purser, Autun (2026): Density of stones in image transects recorded at station EG-IV [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.990270
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Published: 2026-05-21 • DOI registered: 2026-06-19
Abstract:
Images were recorded in transects at HAUSGARTEN station EG-IV in 2015, 2017, and 2021 using the OFOBS towed camera system. A set of 30 images were randomly selected from the beginning, middle, and end of the transects (total = 90 images per year). Images that were too bright, too dark, or outside the range 1.3 - 1.6 m above the seafloor were excluded from analysis. Stones in each image were annotated using the online program BIIGLE (biigle.de). Three red laser points in each image provided a size reference to calculate the surface area. The number of stones was divided by the surface area of each image to yield the density.
Supplement to:
Krumpen, Thomas; Meyer-Kaiser, Kirstin; Ackermann, Lars; Castle, D; Bergmann, Melanie; Hoppmann, Mario; Khan, Saeed Akhtar; Purser, Autun; Schmithüsen, Holger; Wekerle, Claudia (submitted): Glacier shadows on the seafloor: How a warming climate increases iceberg occurrence and changes Arctic deep-sea biodiversity.
Source:
Bergmann, Melanie (2018): Seabed photographs taken along OFOS profile PS107_27-1 during POLARSTERN cruise PS107 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.896655
Bergmann, Melanie; Taylor, James; Schewe, Ingo (2017): Seabed photographs taken along OFOS profile PS93/058-18 during POLARSTERN cruise PS93.2 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.873997
Coverage:
Median Latitude: 78.877825 * Median Longitude: -3.045795 * South-bound Latitude: 78.795730 * West-bound Longitude: -3.197399 * North-bound Latitude: 78.909490 * East-bound Longitude: -2.980330
Date/Time Start: 2015-07-31T21:23:00 * Date/Time End: 2021-06-14T20:51:37
Minimum Elevation: -2516.2 m * Maximum Elevation: -2469.1 m
Event(s):
PS93/058-18 (EG_IV) * Latitude Start: 78.909170 * Longitude Start: -2.980330 * Latitude End: 78.888000 * Longitude End: -3.040500 * Date/Time Start: 2015-07-31T21:23:00 * Date/Time End: 2015-08-01T00:01:00 * Elevation Start: -2516.2 m * Elevation End: -2512.2 m * Location: North Greenland Sea * Campaign: PS93.2 (ARK-XXIX/2.2) * Basis: Polarstern * Method/Device: Ocean Floor Observation System (OFOS)
PS107_27-1 * Latitude Start: 78.909490 * Longitude Start: -2.981570 * Latitude End: 78.887820 * Longitude End: -3.040360 * Date/Time Start: 2017-08-04T20:49:00 * Date/Time End: 2017-08-04T23:23:00 * Elevation Start: -2513.0 m * Elevation End: -2510.0 m * Location: North Greenland Sea * Campaign: PS107 (ARK-XXXI/2) * Basis: Polarstern * Method/Device: Ocean Floor Observation System (OFOS)
PS126_20-12 * Latitude Start: 78.876742 * Longitude Start: -3.034611 * Latitude End: 78.795730 * Longitude End: -3.197399 * Date/Time Start: 2021-06-14T17:40:08 * Date/Time End: 2021-06-14T20:51:37 * Elevation Start: -2515.6 m * Elevation End: -2469.1 m * O2A Registry URI: https://registry.o2a-data.de/items/1529 * Location: North Greenland Sea * Campaign: PS126 (GPF 20-1_021) * 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 | Meyer-Kaiser, Kirstin | |||
| 2 | Date/Time of event | Date/Time | Meyer-Kaiser, Kirstin | |||
| 3 | File name | File name | Meyer-Kaiser, Kirstin | |||
| 4 | Stones | Stones | # | Meyer-Kaiser, Kirstin | OFOS photographic survey with BIIGLE analysis | (Drop-)stones |
| 5 | Area | Area | m2 | Meyer-Kaiser, Kirstin | Surface area of the image, based on three red laser points in the image | |
| 6 | Stones | Stones | #/m2 | Meyer-Kaiser, Kirstin | OFOS photographic survey with BIIGLE analysis | |
| 7 | Reference/source | Reference | Meyer-Kaiser, Kirstin | Density of dropstones in the image |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1252 data points