Inversion of anomalies due to remanent magnetisation: an example from the Black Hill Norite of South Australia
Inversion of anomalies due to remanent magnetisation: an example from the Black Hill Norite of South Australia
复制标题
剩余磁化强度引起的异常反演：南澳大利亚黑山诺长岩的一个例子
DOI：
10.1080/08120099.2011.581310
复制
发表时间：
2011
影响因子：
1.2
通讯作者：
Blair McKenzie
中科院分区：
文献类型：
--
作者：
C. Foss;Blair McKenzie
最近，人们对磁化方向的估计重新产生了兴趣，以改进磁场解释。在这项研究中，我们回顾了使用致病体的磁矩恢复磁化方向的实际问题。我们还研究了从磁场数据的多级反演中直接恢复磁化作用的方法。我们将这些方法应用于南澳大利亚州Black Hill Norite上空已被充分研究的磁异常。磁矩分析和反演都恢复了一致的磁化方向，可用于进一步的研究以估计地质构造。磁化方向与测量的剩余磁化方向非常一致。这意味着异常主要是由于高柯尼斯堡比(Q)的剩磁所致。
There has been a recent renewal of interest in estimation of magnetisation direction for improved magnetic field interpretation. In this study we review practical issues of recovering magnetisation direction using magnetic moments of the causative body. We also investigate the recovery of magnetisation directly from multi-stage inversion of magnetic field data. We apply these methods to the well-studied magnetic anomalies over the Black Hill Norite of South Australia. Both magnetic moment analysis and inversion recover consistent magnetisation directions, and these can be used in further studies to estimate geological structure. The magnetisation directions agree closely with measured remanent magnetisation directions. This implies that the anomalies are principally due to the remanence of a high Koenigsberger ratio (Q).