TY  - STD
AU  - J.-J. Schott, A. C. H. A. M. B. O. D. U. T.
PY  - 2007//
TI  - A MODELLING EXAMPLE OF ANTHROPOGENIC MAGNETIC DISTURBANCES : TRAFFIC ON A ROAD
N2  - XIVth IAGA WORKSHOP ON GEOMAGNETIC OBSERVATORY INSTRUMENTS, DATA ACQUISITION AND PROCESSING; September 13 – 23, 2010; Changchun, Jilin Province, China.The magnetic measurements at the Welschbruch Geophysical Station in Vosges (France) are disturbed by the passes of vehicles on the nearby road. The signing of these disturbances is clearly identified and reproducible. The vehicles are assumed to produce a dipolar field. Tests have shown that the magnetic dipole is not simply due to induced magnetization and hence has an unknown orientation, not parallel to the ambient magnetic field. A first model, parameterized by the time of passage, speed and dipole components, provides already a fairly good prediction of the observed signal. This prediction may be improved if a small amount of induction field, produced by the time varying vehicle disturbance, is introduced in the model, by means of an empirical induction matrix.
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=820), last updated on Wed, 03 Jul 2024 20:27:20 +0200
ID  - J.-J.Schott2007
ER  -