Influence of Geomagnetic Field Variations on SNMR Signal in China

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.