Ernst Dieter Schmitter

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Monitoring electromagnetic waves in the Ultra Low Frequency (ULF) range between 1 mHz and 1 Hz is essential for an understanding of the processes in the earths magnetosphere. Also earthquake prone areas are under suspect to emit precursor ULF signals. We discuss a receiving system using a solenoid sensor and Negative Impedance Converter (NIC) as front end.(More)
— There is increasing evidence that earthquakes produce electromagnetic signals observable at the surface in the extremely low to very low freqency (ELF-VLF) range often in advance to the main event. These precursors are candidates for prediction purposes. Laboratory experiments confirm that material under load emits an electromagnetic signature, the(More)
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