Color Reflectance (Spectrophotometer) of IODP Hole 386-M0087B

Color reflectance spectrophotometry and colorimetry data from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). The data where obtained during the onshore phase of expedition 386 which took place between 2022-02-14 – 2022-03-15 onboard D/V Chikyu. After longitudinal splitting of the core sections, each archive half was scanned by the Tri-Sensor Core Logger (TSCL; NS Design) including a noncontact imaging spectrophotometer (MetaVue VS3200; X-Rite), recording data at 2-cm sampling interval. The obtained data is represented in the L*a*b* color coordinate system, where L* is a total reflectance index ranging 0%–100%, a* is green (<0) to red (>0) chromaticity, and b* is blue (<0) to yellow (>0) chromaticity. L*a*b* values were transferred into RGB values using the MATLAB routine lab2rgb.For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023

本数据集包含国际大洋发现计划（International Ocean Discovery Program, IODP）386航次（日本海沟古地震学）指定钻孔的颜色反射分光光度法与色度学数据。该数据采集于386航次的陆上作业阶段，作业时间为2022年2月14日至2022年3月15日，作业平台为深海钻探船“地球号”（D/V Chikyu）。岩芯剖面经纵向劈分后，每一份存档半芯均通过三传感器岩芯测井仪（Tri-Sensor Core Logger, TSCL；NS Design）完成扫描，该仪器搭载非接触式成像分光光度计（MetaVue VS3200；X-Rite），以2厘米的采样间隔记录数据。所得数据以L*a*b*颜色坐标系表示：其中L*为总反射率指数，取值范围为0%至100%；a*代表绿（<0）至红（>0）色度分量，b*代表蓝（<0）至黄（>0）色度分量。研究人员通过MATLAB内置的lab2rgb函数，将L*a*b*色彩值转换为RGB色彩值。如需了解更多方法学细节，请参阅Strasser M.等人2023年发表的研究中方法学章节：https://doi.org/10.14379/iodp.proc.386.102.2023