X-ray CT images of IODP Hole 386-M0085A

Collection of X-ray Computed Tomography (CT) images from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). The offshore phase of this expedition took place between 2021-04-13 and 2021-06-01 onboard Japanese R/V Kaimei from and to Yokosuka, Japan. This was followed by an onshore phase onboard D/V Chikyu between 2022-02-14 – 2022-03-15. X-ray CT scanning was performed on whole-round sections on board D/V Chikyu in July 2021, after the offshore phase and prior to the onshore phase, using a Discovery CT 750HD (GE Medical Systems) that produces 32 0.625 mm thick slice images every 0.4 s. Data generated for each core consist of core-axis-normal planes of X-ray attenuation values that are 512 × 512 pixels in size. Data were stored on the server as DICOM formatted files. The DICOM files were restructured to create 3-D images for further investigation. For publication purposes JPG files of each scanned section were produced imaging the plane representative of the split core surface.For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023

本数据集为国际大洋发现计划（International Ocean Discovery Program, IODP）386次科考航次（日本海沟古地震学研究）前述钻孔的X射线计算机断层扫描（X-ray Computed Tomography, CT）图像集合。该航次的近海作业阶段于2021年4月13日至2021年6月1日期间开展，搭载日本科研船"海明"号（R/V Kaimei），往返于日本横须贺港。后续陆上作业阶段于2022年2月14日至2022年3月15日在"地球"号（D/V Chikyu）钻探船上完成。近海作业结束后、陆上作业开始前的2021年7月，科研团队在"地球"号上对整段岩心开展X射线CT扫描，所用设备为GE医疗系统（GE Medical Systems）的Discovery CT 750HD，该设备可每0.4秒生成32张厚度为0.625mm的断层切片图像。单根岩心生成的数据包含垂直于岩心轴的X射线衰减值平面图像，分辨率为512×512像素。数据以DICOM格式文件存储于服务器。后续研究人员将DICOM文件重构为三维图像以供进一步分析。为满足出版需求，科研人员为每个扫描岩心段生成了JPG格式图像，该图像对应劈开岩心面的代表性平面。如需获取更多方法学细节，请参阅Strasser M.等人2023年发表的相关章节，链接：https://doi.org/10.14379/iodp.proc.386.102.2023