正切检流计法测量地磁三分量

存在于地球周围具有磁力作用的空间被称为地磁场。地球磁场和地球引力一样,是一个地球物理场,是地球内部的物理性质之一。地球的磁性是地球上生命的保护伞,准确测量地磁场对震前预测、地质勘测等有着重要的意义。描述地磁可以由三要素导出。文中介绍了采用正切检流计法测量地磁三分量,设计并组建了一套由亥姆霍兹线圈等仪器组成,可以实现正切检流计法的实验装置。通过该装置测量了地磁三分量,并分析了影响测量数据准确性的主要因素。

Measuring the Geomagnetic Three- component by Tangent Galvanometer Method

In the earth surrounding with magnetic space, known as the earth magnetic filed. The earth＇ s magnetic field and the gravity of the ea,＇th is a geophysical field, and it is one of the physical properties of the earth interior. The earth＇ s magnetism is an umbrella for life on earth, the accurate measurement of the magnetic field has great significance to the prediction before earthquake and the geological survey. Describe the geomagnetic can be derived by three elements. This paper introduces the tangent galvanometer method to measure the geomagnetic three component. An experimental device is designed and constructed, in order to achieve the method of tangent galvanometer. Using the device measured the geomagnetic three - component, and analyzed the main factors influencing the accuracy of the data.