Abstract
We have devised a method of analyzing geomagnetic array data which effectively filters out variations caused by atmospheric disturbances, their associated ground currents, and local variations in magnetic susceptibility. This method has application to the detection of tectonomagnetic variations. We use vector field data at one station, from which scalar field data at several stations are predicted. Prediction error statistics are then carefully studied, and suspected tectonomagnetic events are described in terms of the probability of their being random fluctuations in normal data. We have applied this method to data from the U.S. Geological Survey magnetometer array in central California, using vector data from Castle Rock Observatory. Prediction errors appear to be Gaussian. The lower limit to the variance appears to be the sensitivity of the vector data at Castle Rock (the hourly means used are reported to the nearest gamma). No believable tectonomagnetic events occur from January 1, 1975, to February 28, 1975.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
