中国境内地磁场变化对SNMR信号的影响

Influence of Geomagnetic Field Variations on SNMR Signal in China

摘要: 地面核磁共振方法是目前唯一直接探测地下水的地球物理新方法。新方法在我国探查地下水等方面已取得明显的效果,但是,对于SNMR信号,却有很多影响因素。本文论述并分析了诸多影响因素中的地磁场强度和磁倾角对NMR信号的影响特点,进而分析了我国区域地磁场强度和磁倾角对SNMR信号的影响规律,对我国进行区域性水文地质调查中运用SNMR方法时提供了重要的参考资料。

Abstract: Surface nuclear magnetic resonance is the only new geophysical method about direct detection of underground water.Obvious effects have been demonstrated in exploration of underground water.However, there are many factors affect SNMR signal, which need research in detail.In this paper, the influence character of the geomagnetic field intensity and inclination on SNMR signal has been discussed and analyzed, and the influence in Chinese region's have been discussed.This paper provides an important reference to hydrological investigation by using SNMR in China.