Katlein, Christian; Anhaus, Philipp; Matero, Ilkka; Nicolaus, Marcel (2021): Secchi depths measured during the MOSAiC expedition [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.929535
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Abstract:
This dataset contains Secchi-depth measurements conducted manually in association with ROV dives during the MOSAiC expedition. A 20 cm black and white Secchi disk was lowered through the ROV access hole and the depth noted at which it disappeared. Data quality of manual observations is indicated using a quality flag with values from 1 representing robust measurements to 3 indicating low data quality. The measurement rope had a length of 20 m, thus true Secchi-depth values larger than 20 m could not be measured (quality flag = 2). During the dark season, Secchi depth was determined using headlamps for illumination resulting in less robust readings (quality flag = 3). Measurements were conducted by various members of the ROV deployment team.
Project(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
Coverage:
Median Latitude: 85.133089 * Median Longitude: 41.415695 * South-bound Latitude: 80.890552 * West-bound Longitude: -0.152633 * North-bound Latitude: 89.027320 * East-bound Longitude: 115.393397
Date/Time Start: 2020-01-04T00:00:00 * Date/Time End: 2020-09-17T00:00:00
Minimum Elevation: -4424.6 m * Maximum Elevation: -722.9 m
Event(s):
PS122/2_18-89 * Latitude: 87.007125 * Longitude: 115.393397 * Date/Time: 2020-01-04T12:04:00 * Elevation: -4404.3 m * O2A Registry URI: registry.o2a-data.de * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Remotely operated sensor platform BEAST (BEAST) * Comment: ECO Dive: Sediment trap trials, ROV-Net, Fishing line to Ocean city; pause survey; Restart; Mission start: ROVnet 10m depth; Mission start: ROVnet ice interface
PS122/2_20-23 * Latitude: 87.400111 * Longitude: 105.332298 * Date/Time: 2020-01-14T07:01:00 * Elevation: -4416.8 m * O2A Registry URI: registry.o2a-data.de * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Remotely operated sensor platform BEAST (BEAST) * Comment: Trap recovery Stake readout High res ridge multibeam Across ridge ADCP; Launch vehicle; Start survey; vehicle recovered; End survey
PS122/2_20-101 * Latitude Start: 87.413158 * Longitude Start: 98.297758 * Latitude End: 87.411377 * Longitude End: 98.293245 * Date/Time Start: 2020-01-18T07:20:00 * Date/Time End: 2020-01-18T07:57:00 * Elevation Start: -4422.6 m * Elevation End: -4422.6 m * O2A Registry URI: registry.o2a-data.de * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Remotely operated sensor platform BEAST (BEAST) * Comment: Nets,Suction Sampling, Stakes, Vertical profile; Start survey; ROVnet start trawling surface; ROVnet end trawling surface; ROVnet start trawling 10m; ROVnet end trawling 10m; End survey
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Katlein, Christian | |||
| 2 | DATE/TIME | Date/Time | Katlein, Christian | Geocode | ||
| 3 | Depth of Secchi Disk | z(SD) | m | Katlein, Christian | Secchi disc | |
| 4 | Quality flag | QF | Katlein, Christian | Secchi disc | 1 = robust measurement; 2 = Secchi depth > 20 m; 3 = Secchi depth determined using headlamps for illumination |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
56 data points
Data
| 1 Event | 2 Date/Time | 3 z(SD) [m] | 4 QF |
|---|---|---|---|
| PS122/5_62-103 | 2020-09-17 | 12.0 | 1 |
| PS122/5_61-200 | 2020-09-12 | 12.5 | 1 |
| PS122/4_47-135 | 2020-07-19 | 8.0 | 1 |
| PS122/4_47-31 | 2020-07-14 | 12.5 | 1 |
| PS122/4_46-177 | 2020-07-11 | 11.5 | 1 |
| PS122/4_46-37 | 2020-07-07 | 11.5 | 1 |
| PS122/4_45-149 | 2020-07-04 | 10.5 | 1 |
| PS122/4_45-61 | 2020-07-01 | 15.5 | 1 |
| PS122/4_44-206 | 2020-06-28 | 14.0 | 1 |
| PS122/4_44-191 | 2020-06-27 | 13.5 | 1 |
| PS122/3_39-77 | 2020-05-09 | 20.0 | 2 |
| PS122/3_39-20 | 2020-05-05 | 20.0 | 2 |
| PS122/3_38-91 | 2020-05-02 | 20.0 | 2 |
| PS122/3_38-50 | 2020-04-28 | 20.0 | 2 |
| PS122/3_37-108 | 2020-04-25 | 20.0 | 2 |
| PS122/3_36-125 | 2020-04-18 | 20.0 | 2 |
| PS122/3_36-24 | 2020-04-14 | 20.0 | 2 |
| PS122/3_35-95 | 2020-04-11 | 20.0 | 2 |
| PS122/3_32-78 | 2020-03-22 | 20.0 | 2 |
| PS122/3_32-11 | 2020-03-17 | 12.0 | 3 |
| PS122/2_25-44 | 2020-02-18 | 20.0 | 3 |
| PS122/2_24-97 | 2020-02-16 | 20.0 | 3 |
| PS122/2_23-116 | 2020-02-08 | 17.5 | 3 |
| PS122/2_22-107 | 2020-02-02 | 19.0 | 3 |
| PS122/2_21-36 | 2020-01-21 | 19.0 | 3 |
| PS122/2_20-101 | 2020-01-18 | 20.0 | 3 |
| PS122/2_20-23 | 2020-01-14 | 16.5 | 3 |
| PS122/2_18-89 | 2020-01-04 | 19.0 | 3 |