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Titschack, Jürgen; Stavrakoudis, Sophia; Molari, Massimiliano; Yapan, Batuhan Çağrı; Otte, Julia Marén; Janssen, Felix; Timann, Christian; Lemke, Arne-Jörn (2024): Computed tomography analysis of multicorer SO268/1_6-1, core 16 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.947846

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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: 11.929983 * Longitude: -117.024583
Date/Time Start: 2019-02-28T19:31:37 * Date/Time End: 2019-02-28T19:31:37
Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 0.2784 m
Event(s):
SO268/1_6-1 (MUC-02) * Latitude: 11.929983 * Longitude: -117.024583 * Date/Time: 2019-02-28T19:31:37 * Elevation: -4087.3 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: SO268/1 * Basis: Sonne_2 * Method/Device: MultiCorer (MUC) * Comment: GER Trial
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1File contentContentTitschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
2Binary ObjectBinaryTitschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
3Number of sliceNo slice#Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
4DEPTH, sediment/rockDepth sedmTitschack, JürgenComputer tomography (CT) Toshiba Aquilion 64Geocode
5Manganese nodules, volumeMn nodulesmm3Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
6Sediment, homogenized upper layer, volumeUpper layermm3Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
7Sediment, bioturbated lower layer, volumeLower layermm3Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
8Bioturbation, volumeBioturbation volmm3Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
9Cracks, volumeCrackmm3Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
10BioturbationBioturb%Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64vol%
11Manganese nodules, relative volumeMn nodules%Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64vol%
12Sediment, homogenized upper layer, relative volumeUpper layer%Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64vol%
13Sediment, bioturbated lower layer, relative volumeLower layer%Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64vol%
14Cracks, relative volumeCrack%Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64vol%
15X-ray attenuation, matrix sediment, meanX-RAY attenuation matrix sed meanHUTitschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
16X-ray attenuation, matrix sediment, standard deviationX-RAY attenuation matrix sed std dev±Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
17Number of voxels, matrix sedimentNo voxels matrix sed#Titschack, JürgenComputer tomography (CT) Toshiba Aquilion 64
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
12997 data points

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