Natural remanent magnetization data from IODP Hole 386-M0085C

Natural remanent magnetization (NRM) data from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). The offshore phase of this expedition took place between 2021-04-13 and 2021-06-01 onboard Japanese R/V Kaimei from and to Yokosuka, Japan, followed by an onshore phase onboard D/V Chikyu between 2022-02-14 – 2022-03-15. Because the diameter of the split section (12.5 cm) is larger than the magnetometer entrance (8.1 cm), U-channel samples were taken from the center of each working half during the onshore phase. Measurements were conducted likewise during the onshore phase using the long-core superconducting rock magnetometer (2G Enterprises, model 760) installed on D/V Chikyu. Due to time constraints paleomagnetism measurements were limited to NRM with 5 mT demagnetization, with measurements typically made at 2 cm intervals. Because linearity is difficult to calculate for short cores, such as trigger cores, corrections of declination were not performed for these cores.For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023

国际大洋发现计划（International Ocean Discovery Program, IODP）第386航次（日本海沟古地震学）上述钻孔的自然剩余磁化强度（Natural remanent magnetization, NRM）数据。该航次的海上阶段于2021年4月13日至6月1日在日本“海王”号科考船（R/V Kaimei）上进行，往返于日本横须贺；随后的陆上阶段于2022年2月14日至3月15日在“地球”号科考船（D/V Chikyu）上开展。由于劈分岩心段直径（12.5厘米）大于磁力仪（magnetometer）入口直径（8.1厘米），陆上阶段从每个工作半岩心的中心采集了U型通道样品（U-channel samples）。陆上阶段同样使用安装在“地球”号科考船（D/V Chikyu）上的长岩心超导岩石磁力仪（long-core superconducting rock magnetometer，2G企业公司，型号760）进行测量。受时间限制，古地磁学（paleomagnetism）测量仅限于经过5毫特斯拉退磁处理的自然剩余磁化强度（NRM），测量间隔通常为2厘米。由于短岩心（如触发岩心（trigger cores））的线性度难以计算，未对这些岩心进行磁偏角（declination）校正。更多方法学信息请参见Strasser, M.等人2023年发表的方法章节，DOI：https://doi.org/10.14379/iodp.proc.386.102.2023