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| Main Authors: | , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2024
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| Online Access: | https://doi.org/10.1594/PANGAEA.948536 |
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| _version_ | 1867171034255327232 |
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| author | Titschack, Jürgen Stavrakoudis, Sophia Molari, Massimiliano Yapan, Batuhan Çağrı Janssen, Felix Timann, Christian Lemke, Arne-Jörn |
| author_facet | Titschack, Jürgen Stavrakoudis, Sophia Molari, Massimiliano Yapan, Batuhan Çağrı Janssen, Felix Timann, Christian Lemke, Arne-Jörn |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_948536 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Computed tomography analysis of multicorer IP21_041MUC, core 9 Titschack, Jürgen Stavrakoudis, Sophia Molari, Massimiliano Yapan, Batuhan Çağrı Janssen, Felix Timann, Christian Lemke, Arne-Jörn Binary Object; Bioturbation; Bioturbation, volume; Center for Marine Environmental Sciences; Computed Tomography; Computer tomograph (CT) Philips Brilliance iCT Elite 256; DEPTH, sediment/rock; File content; IP21; IP21_041MUC; Island Pride; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; MANGAN21; Manganese nodules, relative volume; Manganese nodules, volume; MARUM; Mining impact; MUC; MultiCorer; North Pacific Ocean; Number of slice; Number of voxels, matrix sediment; Sediment, bioturbated lower layer, relative volume; Sediment, bioturbated lower layer, volume; Sediment, homogenized upper layer, relative volume; Sediment, homogenized upper layer, volume; Sediment characterisation; X-ray attenuation, matrix sediment, mean; X-ray attenuation, matrix sediment, standard deviation 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. |
| title | Computed tomography analysis of multicorer IP21_041MUC, core 9 |
| topic | Binary Object; Bioturbation; Bioturbation, volume; Center for Marine Environmental Sciences; Computed Tomography; Computer tomograph (CT) Philips Brilliance iCT Elite 256; DEPTH, sediment/rock; File content; IP21; IP21_041MUC; Island Pride; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; MANGAN21; Manganese nodules, relative volume; Manganese nodules, volume; MARUM; Mining impact; MUC; MultiCorer; North Pacific Ocean; Number of slice; Number of voxels, matrix sediment; Sediment, bioturbated lower layer, relative volume; Sediment, bioturbated lower layer, volume; Sediment, homogenized upper layer, relative volume; Sediment, homogenized upper layer, volume; Sediment characterisation; X-ray attenuation, matrix sediment, mean; X-ray attenuation, matrix sediment, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.948536 |