X-ray CT images of IODP Hole 386-M0081D

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次航次（日本海沟古地震学研究）指定钻孔的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日期间开展，搭载日本科研船“海明号（R/V Kaimei）”，往返于日本横须贺港。随后的陆上作业阶段于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。X射线CT扫描于海上阶段结束后、陆上阶段开始前的2021年7月在“地球号”钻探船上开展，针对完整岩心段进行扫描，所用设备为Discovery CT 750HD（通用电气医疗系统集团，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。每个岩心生成的数据包含以岩心轴为法向的X射线衰减值平面图像，图像分辨率为512×512像素。数据以DICOM格式文件存储于服务器，后续对DICOM文件进行重构以生成三维图像，供后续研究使用。为满足出版需求，还为每个扫描截面生成了反映岩心劈开面代表性平面的JPG格式图像。如需了解更多方法学细节，请参阅Strasser M.等人2023年发表的研究中的方法章节，链接：https://doi.org/10.14379/iodp.proc.386.102.2023