X-ray CT images of IODP Hole 386-M0084B

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. […]

本数据集包含国际大洋发现计划（International Ocean Discovery Program, IODP）386次航次（日本海沟古地震学研究）上述钻孔的X射线计算机断层扫描（X-ray Computed Tomography, CT）图像集。该航次的海上作业阶段于2021年4月13日至2021年6月1日期间，在日本科考船RV Kaimei号上开展，往返航点为日本横须贺港。随后该航次于2022年2月14日至2022年3月15日在D/V Chikyu号船上完成陆上作业阶段。X射线CT扫描工作于海上作业阶段结束后、陆上作业阶段开始前的2021年7月，在D/V Chikyu号船上对完整岩芯段开展，所用设备为Discovery CT 750HD（GE Medical Systems），该设备可每0.4秒生成32张厚度为0.625毫米的断层切片图像。每个岩芯生成的数据为垂直于岩芯轴的X射线衰减值平面图像，分辨率为512×512像素。原始数据以DICOM格式文件存储于服务器中。研究人员将DICOM文件重构为三维图像以供后续研究。为满足出版需求，还为每个扫描岩芯段生成了JPG格式图像，用于呈现劈分岩芯表面的代表性截面。[...]