Citation:

PANGAEA.971785 (dataset in review)

Name: Six linear regression models for the magnetic susceptibility of sediment core GeoB18530-1
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; grain size distribution; Grand Banks Margin; Heinrich events; Ice-Rafted Detritus; rock magnetism

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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 3-6 and ILs 4-6 correctly; their regression coefficients also do not conform to the measured susceptibilities of the IRD species.

Keyword(s):

Geochemistry; grain size distribution; Grand Banks Margin; Heinrich events; Ice-Rafted Detritus; rock magnetism

Related to:

Bukar, Shettima; von Dobeneck, Tilo; Wang, Yiyun; Frederichs, Thomas; Dallanave, Edoardo; St-Onge, Guillaume (submitted): Ice-Rafted Detritus (IRD) of the SE Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 6 - Part II: Magnetic Properties. Geochemistry, Geophysics, Geosystems

References:

von Dobeneck, Tilo; Bukar, Shettima: 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):

Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic (ArcTrain)

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: * Basis: * 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) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

5064 data points

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