Moisture and density (MAD) from IODP Hole 386-M0087C

Moisture and density (MAD) data from discrete samples from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). During the onshore phase of expedition 386, which took place between 2022-02-14 – 2022-03-15 onboard D/V Chikyu, discrete samples for MAD measurements (bulk density, dry density, grain density, water content, porosity, and void ratio) were taken from the work halves using 10 cubic centimetre syringes at an approx. down-core resolution of every 2 meters. Sampling depths were adapted and slightly modified for layers of special interest, such as tephras. Samples were processed and measured directly after sampling onboard Chikyu. For the measurements themselves samples were transferred to glass beakers of known weight and volume.For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023

本数据集源自国际大洋发现计划（International Ocean Discovery Program, IODP）386航次（日本海沟古地震学研究）指定钻孔的离散样品，对应水分与密度（Moisture and Density, MAD）测试数据。该航次的陆上作业阶段于2022年2月14日至2022年3月15日在“地球号”钻探船（D/V Chikyu）上开展，研究人员使用10立方厘米的注射器从岩心工作半段采集离散样品，用于开展MAD参数测定，测试参数包括体积密度、干密度、颗粒密度、含水率、孔隙度及孔隙比。采样的岩心纵向间距约为每2米，针对火山灰层等特殊关注层位，采样深度进行了适配与微调。样品在“地球号”船上完成采样后将立即进行处理与测量，测量环节中样品被转移至已知重量和体积的玻璃烧杯中。如需获取更多实验方法细节，请参阅Strasser M等人2023年发表的对应方法章节，链接：https://doi.org/10.14379/iodp.proc.386.102.2023