Schoening, Timm; Gazis, Iason-Zois (2019): Summary of sizes, weights, counts and coverage of poly-metallic nodules from box cores taken during SONNE cruises SO268/1 and SO268/2 [dataset]. GEOMAR - Helmholtz Centre for Ocean Research Kiel, PANGAEA, https://doi.org/10.1594/PANGAEA.904967
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Abstract:
Aggregation of single nodule measurements (see https://doi.pangaea.de/10.1594/PANGAEA.904962) to values describing the entire box corer:
- Nodules [#]: Total number of nodules sampled in the box corer (N). Includes surface nodules (N_s) and those from deeper layers (N_d)
- Nodules [#](buried): Number of nodules from deeper layers (N_d) in the box corer that were not visible on the sea floor surface
- Nodules size [cm^2]: The area A_i [cm^2] of an individual nodule n_i was computed from its two main axes (a_i [mm] & b_i [mm]) and the ellipsoidal formula (A_i = pi * a_i/2 * b_i/2 * 0.01). The value given here represents the median value of all nodule sizes in this box corer (Nodules size [cm^2] = MEDIAN(A_i,i=1..N)
- Nodules m [kg]: Sum of the weights w_i [g] of all nodules in the box corer (surface and deeper layers; Nodules m [kg] = SUM(n_i,i=1..N)) * 0.001. To quantify nodule abundance per square meter, multiply this value by 4!
- Nodules [%]: The sum of all nodule sizes A_i [cm^2] (i=1..N_s) visible at the seafloor, divided by the area of the box corer (50x50 cm^2): Nodules [%] = SUM(A_i,i=1..N_s) / 2500
Related to:
Schoening, Timm; Gazis, Iason-Zois (2019): Sizes, weights and volumes of poly-metallic nodules from box cores taken during SONNE cruises SO268/1 and SO268/2. GEOMAR - Helmholtz Centre for Ocean Research Kiel, PANGAEA, https://doi.org/10.1594/PANGAEA.904962
Project(s):
JPI Oceans - Ecological Aspects of Deep-Sea Mining (JPIO-MiningImpact)
Coverage:
Median Latitude: 12.732274 * Median Longitude: -120.476911 * South-bound Latitude: 11.836900 * West-bound Longitude: -125.929017 * North-bound Latitude: 14.116733 * East-bound Longitude: -117.011183
Date/Time Start: 2019-03-02T00:56:37 * Date/Time End: 2019-05-16T03:39:52
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
SO268/1_12-2 (BC-02) * Latitude: 11.931333 * Longitude: -117.027183 * Date/Time: 2019-03-02T00:56:37 * Elevation: -4051.3 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: SO268/1 * Basis: Sonne_2 * Method/Device: Box corer (BC) * Comment: GER Trial; failed
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Date/Time of event | Date/Time | ||||
| 3 | Latitude of event | Latitude | ||||
| 4 | Longitude of event | Longitude | ||||
| 5 | Elevation of event | Elevation | m | |||
| 6 | DEPTH, sediment/rock | Depth sed | m | Schoening, Timm | Geocode | |
| 7 | Nodules | Nodules | # | Schoening, Timm | ||
| 8 | Nodules | Nodules | # | Schoening, Timm | buried | |
| 9 | Nodules, size | Nodules size | cm2 | Schoening, Timm | median nodule size | |
| 10 | Nodules, mass | Nodules m | kg | Schoening, Timm | total | |
| 11 | Nodules | Nodules | % | Schoening, Timm | seafloor coverage by nodules |
License:
Creative Commons Attribution-NonCommercial 4.0 International (CC-BY-NC-4.0)
Size:
180 data points