P-wave velocity of discrete samples (DPW) from IODP Hole 386-M0091B@en

P-wave velocity 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 P-wave velocity measurements were taken from the work halves approx. every 2 meter down core using syringes with an inner diameter of 2 cm. Samples measured 2.5–3 cm long for a sample volume of ~10 cubic centimetres. Samples were then shipped to the European Petrophysics Consortium (EPC) laboratory at the University of Leicester (UK) for processing. Measurements were performed with a Geotek P-wave logger for discrete samples (PWL-D). Measurements were attempted for each sample, however, the unconsolidated lithology of some samples proved unsuitable for the instrument (e.g. too soupy or too friable to be placed between the transducers). […]

本数据集为国际大洋发现计划（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P波速度数据。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”（D/V Chikyu）钻探船上开展。作业期间，研究人员使用内径2 cm的注射器，沿岩心向下每隔约2 m从岩心工作半段采集离散样品以用于P波速度测量。所采集样品长度为2.5–3 cm，样品体积约10 cm³。随后，所有样品被运往英国莱斯特大学欧洲岩石物理联合会（European Petrophysics Consortium, EPC）实验室进行处理。测量工作采用Geotek公司离散样品P波测井仪（P-wave logger for discrete samples, PWL-D）完成。本次研究尝试对全部样品开展测量，但部分样品因岩性过于松散（例如过于粘稠或过于易碎，无法放置于换能器之间）而不适用于该仪器。[...]