Analysis Of Interference Phenomena Observed At Ethio-finno Observatory (efo)

The pulsation magnetometer at Ethio-Finno Observatory (EFO) has been operationalrnsince June 2004. The major objectives of this instrument is to characteristically investigaternthe ionospheric phenomena of the upper polar atmosphere. Results from therndata analysis in time and frequency domain depicts existence of strong interferencesrnwhich are not observed in other similar observatories. In this thesis we shall investigaternthe disturbance characteristics and delve out the cause of peaks by relating withrnsolar activities, geomagnetic activities and local effects such as ferrous object, andrnground loop. This is done by carefully investigating the data collected during somerndays and by conducting controlled experiment

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