Citation:

PANGAEA.948538 (dataset in review)

Name: Computed tomography analysis of multicorer IP21_052MUC, core 11
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Computed Tomography; Mining impact; Sediment characterisation

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Abstract:

Selected multicorer cores and ROV push cores (IP21_021-17, IP21_021-18, IP21_061, IP21_061-19, IP21_061-20) of R/V Island Pride cruise IP21 were scanned using a Philips Brilliance iCT Elite 256 computer tomograph (CT) at the hospital Klinikum Bremen-Mitte, with an X- ray source voltage of 120 kV and a current of 300 mA. The CT image stacks have a physical resolution of 0.293 mm in the x and y directions and 0.625 mm resolution in the z direction (collimation; 0.3 mm reconstruction interval). Images were reconstructed using the filtered Back Projection (fBP) mode and a bone kernel (YB (Enhanced)).

The data were processed with the ZIB edition of the Amira software (version 2019.51; 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, 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: 11.929400 * Longitude: -117.020433

Date/Time Start: 2021-05-03T08:58:00 * Date/Time End: 2021-05-03T08:58:00

Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 0.2319 m

Event(s):

IP21_052MUC * Latitude: 11.929400 * Longitude: -117.020433 * Date/Time: 2021-05-03T08:58:00 * Elevation: -4086.0 m * Location: North Pacific Ocean * Campaign: (MANGAN21) * Basis: * Method/Device: MultiCorer (MUC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	File content	Content		Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
2	Binary Object	Binary		Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
3	Number of slice	No slice	#	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
4	DEPTH, sediment/rock	Depth sed	m	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256	Geocode
5	Manganese nodules, volume	Mn nodules	mm³	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
6	Sediment, homogenized upper layer, volume	Upper layer	mm³	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
7	Sediment, bioturbated lower layer, volume	Lower layer	mm³	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
8	Bioturbation, volume	Bioturbation vol	mm³	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
9	Bioturbation	Bioturb	%	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256	vol%
10	Manganese nodules, relative volume	Mn nodules	%	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256	vol%
11	Sediment, homogenized upper layer, relative volume	Upper layer	%	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256	vol%
12	Sediment, bioturbated lower layer, relative volume	Lower layer	%	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256	vol%
13	X-ray attenuation, matrix sediment, mean	X-RAY attenuation matrix sed mean	HU	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
14	X-ray attenuation, matrix sediment, standard deviation	X-RAY attenuation matrix sed std dev	±	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256
15	Number of voxels, matrix sediment	No voxels matrix sed	#	Titschack, Jürgen	Computer tomograph (CT) Philips Brilliance iCT Elite 256

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:

9292 data points

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