RESEARCH ON EFFECT OF GEOMAGNETIC FIELD TIME-SPACE DIFFERENCE TO GEOMAGNETIC SURVEY PRECISION
Yuan Jing · Seismological Research of Northeast China · 2003
In the Liaonan and Liaoxi area of synthetic surveying network,the effect of the variational magnetic field of the change relied upon the world time on the reduced precision is bigger than the variational magnetic field of the change relied upon the local time.The effect of reduced distance,longitud direction distance and latitude direction distance on reduced precision isnt obvious.The effect of magnetic character figure K on the reduced precision is obvious when the reduced distanc is largger,but we can eliminate the effect of K by correcting the daily variation on the world time.