A New Borehole Magnetic Susceptibility Tool for High-Resolution Paleoclimate and Core-Log Integration Studies

一种新的井下磁化率（MS）工具将提供测井数据，以加强IODP下的古气候和沉积学研究，并将补充现有的多传感器伽马射线工具（MGT）。该项目将设计一个具有更好分辨率的MS工具（10厘米而不是1米），而不是之前ODP项目中可用的工具。所得到的数据对于多孔岩心的相互关联以及单孔岩心和测井的整合至关重要。该工具将由现成的传感器制成，配备适当的压力外壳和数据采集/传输系统，并且支持者打算遵守IODP咨询结构中阐明的第三方井下工具指南。MS工具不仅可以在深海环境中找到潜在的应用，还可以在湖泊和大陆环境中找到潜在的应用。预计MS工具最终将作为几乎所有非立管船IODP项目的一部分常规运行。新工具的现场测试定于2005年底和2006年进行。

A new downhole magnetic susceptibility (MS) tool will provide logging data to enhance paleoclimate and sedimentological studies under IODP and will complement the existing multisensor gamma ray tool (MGT). The project will design a MS tool that has better resolution (10 cm as opposed to 1 m) than the tool previously available for some legs of the ODP program. The resulting data will prove critical for the intercorrelation of cores from multiple holes and the integration of cores and logs from single holes. The tool will be built from off-the-shelf sensor fit with the appropriate pressure housing and data acquisition/transmission system, and the proponents intend to comply with third-party downhole tool guidelines articulated by the IODP advisory structure. The MS tool could find potential application not only in the deep-sea environment, but also in lacustrine and continental settings. It is expected that the MS tool will eventually be routinely run as part of nearly every IODP program on the non-riser vessel. Field tests on the new tool are scheduled for late 2005 and 2006.