Physical properties (MSCL) of IODP Hole 386-M0083C@en

Multi-Sensor Core Logger (MSCL) data (P-wave velocity, gamma ray attenuation (GRA) density, magnetic susceptibility, natural gamma radiation (NGR), noncontact resistivity (NCR)) from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). These data were obtained from whole round core sections by means of a Geotek MSCL during the offshore phase of the expedition. The offshore phase of expedition 386 took place between 2021-04-13 and 2021-06-01 onboard Japanese R/V Kaimei from and to Yokosuka, Japan. As the aforementioned parameters are sensitive to temperature core sections were stored for at least 6 hours after arrival on deck before measurement to allow for temperature equilibration. The core physical properties were measured at predetermined optimal instrument-based spatial and temporal sampling intervals. GRA density, P-wave velocity, NCR, and magnetic susceptibility were measured every 2 cm, and NGR measurements were obtained every 10 cm. 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）第386次航次（日本海沟古地震学研究）指定钻孔的多传感器岩心记录仪（Multi-Sensor Core Logger, MSCL）数据，涵盖纵波速度、伽马射线衰减（GRA）密度、磁化率、自然伽马辐射（NGR）与非接触电阻率（NCR）五类参数。上述数据由航次近海作业阶段通过Geotek MSCL对完整圆形岩心柱测量所得。第386次航次的近海作业时段为2021年4月13日至2021年6月1日，作业船舶为日本籍“开明”号（R/V Kaimei），航次往返于日本横须贺港。鉴于前述参数对温度较为敏感，岩心样品在抵达甲板后需至少静置6小时以完成温度平衡，方可开展测量。岩心物理性质的测量按照基于仪器预设的最优空间与时间采样间隔进行：其中伽马射线衰减密度、纵波速度、非接触电阻率及磁化率的采样间距为2 cm，自然伽马辐射测量的采样间距为10 cm。如需了解更多方法学细节，请参阅Strasser M.等人2023年发表的研究章节（https://doi.org/10.14379/iodp.proc.386.102.2023）。