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(Table 2) Revised stacked record on magnetic susceptibility of ODP Site 162-984 sediments@en

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DataONE2026-02-06 更新2026-05-19 收录
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Magnetic field and susceptibility data were collected using the geological high-resolution magnetometer tool string (GHMT) at three sites during Ocean Drilling Program Leg 162. Postcruise processing of the magnetic field data yielded a polarity stratigraphy for Holes 986C and 987E. A magnetic susceptibility record was measured at Hole 984B. Detailed analysis of the core and log susceptibility records at Hole 984B yielded an empirical tool resolution of the susceptibility measurement tool (SUMT) of 53 cm. At Site 984, where sedimentation rates were typically >10 cm/k.y., this gave a resolution of at least ~5000 yr. This data report summarizes the GHMT postcruise processing, method of interpretation, and analysis of the SUMT resolution.

本研究在大洋钻探计划(Ocean Drilling Program)第162航次期间,借助地质高分辨率磁力仪串(GHMT,geological high-resolution magnetometer tool string)于3个站位采集了磁场与磁化率数据。对所获磁场数据开展航后处理后,得到了986C号与987E号钻孔的极性地层学(polarity stratigraphy)结果。984B号钻孔则完成了磁化率记录的测量工作。对984B号钻孔的岩心及测井磁化率记录进行详细分析后,得到磁化率测量仪器(SUMT,susceptibility measurement tool)的经验仪器分辨率为53厘米。在984号站位,其沉积速率通常大于10厘米/千年,据此可得该仪器的时间分辨率至少可达约5000年。本数据报告对GHMT的航后处理流程、解释方法,以及SUMT分辨率的分析过程进行了总结。

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2026-04-14
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