von Dobeneck, Tilo; Bukar, Shettima (2025): Six linear regression models for the magnetic susceptibility of sediment core GeoB18530-1 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971784 (DOI registration in progress), In: von Dobeneck, T; Bukar, S (2025): Rock magnetic, geochemical and sedimentological properties related to IRD composition and content of sediment core GeoB18530-1 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971785 (DOI registration in progress)
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2025-10-20
Abstract:
Six linear regression estimates of magnetic susceptibility were empirically tested for their ability to predict distinct HLs and ILs signal patterns. As predictors, we used MD magnetite content (IRM 20 mT), magnetic grain size (SIRM/X), dolomite and granite proxies (Ca/Sr and K/Fe), bulk porosity (%), dolomite and granite counts, and counts of the major 13 IRD species. As the obtained numbers and residues demonstrate, the rock magnetic proxies yield the best fits, followed by element ratios and porosity. The count-based predictors are incapable of estimating the older HLs 3-H5a and ILs 4-6 correctly; their regression coefficients also do not conform to the measured susceptibilities of the IRD species.
Keyword(s):
Related to:
Bukar, Shettima; von Dobeneck, Tilo; Wang, Yiyun; Max, Lars; Frederichs, Thomas; Dallanave, Edoardo; St‐Onge, Guillaume (2025): Ice‐Rafted Detritus of the Southeast Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 5a: 2. Magnetic Properties. Geochemistry, Geophysics, Geosystems, 26(10), e2024GC011931, https://doi.org/10.1029/2024GC011931
References:
von Dobeneck, Tilo; Bukar, Shettima (2025): 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
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 DEPTH, sediment/rock: 5.509 m * Maximum DEPTH, sediment/rock: 10.606 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 7.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Linear regression equation | LRE | von Dobeneck, Tilo | Linear regression model | Six linear susceptibility models | |
| 2 | DEPTH, sediment/rock | Depth sed | m | Wang, Yiyun | Geocode – Depth of observed susceptibility | |
| 3 | Heinrich event | Heinrich event | Bukar, Shettima | HE stratigraphy based on Ca/Sr | ||
| 4 | Magnetic susceptibility | MAGS | m3/kg | von Dobeneck, Tilo | Calculated from linear regression | Respective susceptibility model estimates |
| 5 | Residual value | Residual | von Dobeneck, Tilo | Calculated from linear regression | Linear regression residuals |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
5064 data points
Download Data
View dataset as HTML (shows only first 2000 rows)