On Changs of Base Line Values of Geomagnetic Variometer - a Method of Base Line Value Determination-
Yamaguchi, Y.
Abstract
The base line value of the geomagnetic variometer is usually determined through absolute measurement once or twice a week. From them, the daily base line values are calculated by the various method. It is well known that the observed base line values not only depend on the variometer temperature, but also drift away. According to circumstances of the variation house or the climate, the behaviour of the base line values becomes very complicated. Thus the reasonable determination of the daily base line values is difficult.
In this paper, the availability of the multiple regression analysis of the observed values is examined. Based on this method of analysis, the qualified procedure for routine work needs to be devised.
