ON-LAND DETECTING A MOTIONALLY INDUCED ELECTRIC-FIELD - TEST MEASUREMENTS IN NORTHERN FINLAND

Test measurements of the electric voltage in Kilpisjarvi, northern Fin land during September 9-October 12, 1995 were made with the aim of stu dying the possibility of detecting a motionally induced electric field by means of a horizontal electric dipole 3800 meters in length locate d at a distance of about 50 km from the nearest fjord of the Norwegian Sea. In addition to the electric voltage we measured at Kilpisjarvi, the water level, magnetic field and meteorological data from Tromso, N orway, the meteorological data from Kilpisjarvi and the magnetic field data from Sodankyla, Finland were used in analysis. Raw data were pre processed to eliminate non-stationarities (remove outliers) and to rem ove solar daily variations, and were then smoothed. No significant inf luence of the local temperature, humidity and rainfall on the smoothed voltages was found. Probably due to a source effect the voltage was n ot coherent with the magnetic field from Tromso and Sodankyla. The lon g-period anomaly with the period of about 16 days was observed in the smoothed voltage, water level and air pressure. More data are necessar y to derive a definite conclusion about the nature of the observed phe nomenon, which is probably associated with direct atmospheric forcing on the coastal zone of the Norwegian Sea.