EARTHQUAKE PRECURSORS. By Dionysios Dimakos (SV1ZJ)
I am 38 years old and I reside in Athens, Greece. My major is electronic engineering. Since 1991, I have been involved – as an amateur - in monitoring and recording the magnetic field variations, aiming to trace earthquake precursors. For this purpose, I have constructed and tested many different circuits and sensors. It is a fact that the major problem during measurements is created by the use itself of electric devices, as well as the power lines.
Scope of Measurement
During the past few years, I have focused my study on 0,1 Hz to 40 Hz frequency spectrum, measuring and recording the instant variations of the magnetic field and not its absolute value.
Unfortunately, in the vicinity of big cities, the levels of signals from natural sources are 1.000-30.000 times lower than those of signals transmitted by our technological civilization. For this reason, the use of filters in the electronic circuit is imperative.
Telluric Currents
