IODP Expedition 391 Whole-round core section composite 360 degree images

Images of the outside of hard rock whole-round sections were acquired using a linescan imager (Section Half Imaging Logger [SHIL]) and a special holder that allows each 90 degree segment of the outer surface to be positioned properly. The images were taken at a resolution of 20 lines/mm (50 micropixels). JRSO staff take these quadrant images and compile them into a side-by-side rollout photograph of the section. Composite images are available as both JPG and TIF image formats. Individual quadrant images are available as JPG images only through this report; contact the IODP-JRSO Data Librarian if quadrant TIF files (~160 MB) are needed.采用线扫描成像仪（Section Half Imaging Logger，缩写SHIL）与专用夹具采集硬岩完整圆形剖面的外壁图像，该夹具可使外表面每90°扇形区段均实现精准定位。图像采集分辨率为20线/毫米（50微像素）。JRSO工作人员将这些扇形区段图像拼接为该剖面的并排展开式全景照片。合成全景图像提供JPG与TIF两种格式文件。本报告仅提供单扇形区段图像的JPG格式文件；若需扇形区段的TIF格式文件（单文件大小约160 MB），请联系IODP-JRSO数据馆员。