Citation:

PANGAEA.947895

Name: Computed tomography analysis of multicorer SO268/1_39-1, core 16
Published: 2024-06-22
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Computed Tomography; Mining impact; Sediment characterisation

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Published: 2024-06-22 • DOI registered: 2024-06-22

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Abstract:

Selected multicorer cores of R/V Sonne cruise SO268-1 and were scanned by a Toshiba Aquilion 64 computer tomograph (CT) at the hospital Klinikum Bremen-Mitte with an x-ray source voltage of 120 kV and a current of 600 mA. The CT image stacks have a resolution of 0.35 mm in x/y-direction and 0.5 mm resolution in z-direction (0.3 mm reconstruction unit). Images were reconstructed using Toshiba's patented helical cone beam reconstruction technique (TCOT) and are provided in DICOM-format. The data were processed with the ZIB edition of the Amira software (version 2021.03; Stalling et al., 2005; http://amira.zib.de). Within Amira, the core liners, including about 2 mm of the core rims, were deleted from the data set. Mangan nodules with diameters >1 mm, open bioturbation traces, an unidentified organism (only present in core SO268-2-200-1 MC18), the natural bioturbated and surficial homogenised sediment were segmented by a marker-based watershed segmentation and visualized in 3D. Subsequently, the sediment components were quantified (MaterialStatistics module; volume per slice) and the mean and standard deviation of the sediment x-ray attenuation (MaterialStatistics module; statistics per slice per label; to avoid marginal averaging effects the sediment label was reduced by three voxels) were determined.

Keyword(s):

Computed Tomography; Mining impact; Sediment characterisation

Further details:

Stalling, Detlev; Westerhoff, Malte; Hege, Hans-Christian (2005): Amira: A Highly Interactive System for Visual Data Analysis. In: Hansen, C.D., Johnson, C.R. (Eds.), Visualization Handbook. Butterworth-Heinemann, Burlington, 749-767, https://doi.org/10.1016/B978-012387582-2/50040-X

Project(s):

Center for Marine Environmental Sciences (MARUM)

JPI Oceans - Ecological Aspects of Deep-Sea Mining (JPIO-MiningImpact)

Funding:

Federal Ministry of Education and Research (BMBF), grant/award no. 03F0812A : JPI-O MiningImpact: Monitoringkonzepte für einen Manganknollenabbau in der Tiefsee

Coverage:

Latitude: 11.854367 * Longitude: -117.039467

Date/Time Start: 2019-03-09T13:16:34 * Date/Time End: 2019-03-09T13:16:34

Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 0.2334 m

Event(s):

SO268/1_39-1 (MUC-08) * Latitude: 11.854367 * Longitude: -117.039467 * Date/Time: 2019-03-09T13:16:34 * Elevation: -4130.1 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: * Basis: * Method/Device: MultiCorer (MUC) * Comment: GER Reference; Position USBL

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	File content	Content		Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
2	Binary Object	Binary		Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
3	Number of slice	No slice	#	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
4	DEPTH, sediment/rock	Depth sed	m	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64	Geocode
5	Manganese nodules, volume	Mn nodules	mm³	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
6	Sediment, homogenized upper layer, volume	Upper layer	mm³	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
7	Sediment, bioturbated lower layer, volume	Lower layer	mm³	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
8	Bioturbation, volume	Bioturbation vol	mm³	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
9	Bioturbation	Bioturb	%	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64	vol%
10	Manganese nodules, relative volume	Mn nodules	%	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64	vol%
11	Sediment, homogenized upper layer, relative volume	Upper layer	%	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64	vol%
12	Sediment, bioturbated lower layer, relative volume	Lower layer	%	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64	vol%
13	X-ray attenuation, matrix sediment, mean	X-RAY attenuation matrix sed mean	HU	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
14	X-ray attenuation, matrix sediment, standard deviation	X-RAY attenuation matrix sed std dev	±	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64
15	Number of voxels, matrix sediment	No voxels matrix sed	#	Titschack, Jürgen	Computer tomography (CT) Toshiba Aquilion 64

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

9352 data points

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