von Dobeneck, Tilo; Bukar, Shettima: Nonlinear Mapping (NLM) analysis of IRD content in Heinrich Event layers (H1-H6) and interlayers (I1-I5) of sediment core GeoB18530-1 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971282 (dataset in review), In: von Dobeneck, T; Bukar, S: Petrological classification and lithology-specific abundance analysis of ice-rafted detritus (IRD) of sediment core GeoB18530-1 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971290 (dataset in review)
Abstract:
This 3D data set represents the result of a Sammon projection (Sammon, 1969; https://doi.org/10.1109/T-C.1969.222678), where the mean relative proportions of all classified IRD lithologies for layers H1-H6 and IL1-IL5 were scaled down from the 22-dimensional parameter space into a presentable 3D space with the least possible change of point-to-point distance by Non-Linear Mapping (NLM). The spatial configuration depicted in Figure 9d of the associated publication (Bukar et al., 2024) visualizes the overriding compositional distinctiveness of Heinrich layers from Interlayers, but also the variability within each of these periods; in particular layers H3 and H6 as well as Last Glacial maximum interlayer I1 differ considerably from comparable situations.
Related to:
Bukar, Shettima; Lisker, Frank; von Dobeneck, Tilo; Max, Lars; Wang, Yiyun; Lenz, Marlene M; Mulitza, Stefan; St-Onge, Guillaume; Piper, David (submitted): Ice-Rafted Detritus (IRD) of the SE Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 6 - Part I: Petrology and Abundance. Geochemistry, Geophysics, Geosystems
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 221211316: GRK/IRTG 1904: ArcTrain - Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic
Petroleum Technology Development Fund (PTDF), grant/award no. Shettima Bukar: Overseas postgraduate scholarship to Shettima Bukar
Coverage:
Latitude: 42.839500 * Longitude: -49.234833
Date/Time Start: 2014-06-14T13:58:00 * Date/Time End: 2014-06-14T13:58:00
Minimum Elevation: -1888.0 m * Maximum Elevation: -1888.0 m
Event(s):
GeoB18530-1 (509-1) * Latitude: 42.839500 * Longitude: -49.234833 * Date/Time: 2014-06-14T13:58:00 * Elevation: -1888.0 m * Recovery: 10.74 m * Location: SE Grand Banks Slope * Campaign: MSM39 * Basis: Maria S. Merian * Method/Device: Gravity corer (GC)
Comment:
Corresponds to Figure 9d.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Heinrich event | Heinrich event | Bukar, Shettima | Stratigraphy based on Ca/Sr | ||
| 2 | Non-Linear mapping, X coordinate | NLM X | % | von Dobeneck, Tilo | Multivariate statistical analysis | |
| 3 | Non-Linear mapping, Y coordinate | NLM Y | % | von Dobeneck, Tilo | Multivariate statistical analysis | |
| 4 | Non-Linear mapping, Z coordinate | NLM Z | % | von Dobeneck, Tilo | Multivariate statistical analysis |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
44 data points