The final development stages of the UW high-temperature, high-pressure VRM magnetometer

这项奖励将支持开发一种磁力计，以测量在高温和压力下模拟地壳中现场条件的地壳典型岩石的磁性粘性获取系数。对地壳大片区域的磁力测量已被用来推断地下地壳的成分和结构。大面积地壳显示出高幅度磁异常，这意味着地壳磁化值远远高于实验室对小样本地壳岩石的测量结果。这些以实验室为基础的单个样品的磁化测量与在大片地壳区域上测量的磁化强度之间的部分差异被认为是因为目前实验室仪器无法测量在地壳内部的高温高压条件下随时间获得的岩石的磁化强度。该项目旨在为试图了解地磁场及其与岩石磁性相互作用的细节的研究人员提供这样的测量能力。

This award will support the development of a magnetometer to measure the magnetic viscosity acquisition coefficients of rocks typical of the Earth's crust at elevated temperatures and pressures simulating in situ conditions in the crust. Magnetic surveys over large areas of the crust have been used to infer both the composition and structure of subsurface crust. Large regions of crust exhibit high-amplitude magnetic anomalies implying crustal magnetization values much higher than those actually observed in laboratory measurements on small samples of crustal rocks. Part of the discrepancy between these laboratory based measurements of magnetization in individual samples and what is measured above large crustal areas is thought to arise from the current inability of laboratory instrumentation to measure the magnetization of rocks acquired over time under the high-temperature-pressure conditions ambient inside the Earth's crust. This project is intended to provide such measurement capability for researchers trying to understand the details of the geomagnetic field and its interaction with rock magnetic properties.