大地电场
telluric field observation
telluric field
Geoelectric filed
geoelectric field
earth electric field
加拿大大地测量局
Geodetic Survey of Canada
声频大地电场法
acoustic frequency geo-electric field method
声频大地电场仪
acoustical frequency electric
标量大地电磁法
scalar magnetotelluric method
长周期大地电磁
long-period MT
long-period magnetotellurics
超长周期大地电磁
super long period Magnetotelluric