EFFECTS OF SOLAR ACTIVITIES ON CPS IONOSPHERIC TEC OBSERVED AT NAZARETH STATION

Solomon, Degefa

dc.contributor.author	Solomon, Degefa
dc.date.accessioned	2017-08-04T03:37:34Z
dc.date.available	2017-08-04T03:37:34Z
dc.date.issued	2017-08-04
dc.identifier.uri	http://hdl.handle.net/123456789/7573
dc.description	A THESIS SUBMITTED TO THE SCHOOL OF GRADUATE STUDIES OF BAHIR DAR UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN PHYSICS	en_US
dc.description.abstract	This thesis asserts the effects of solar activity on CPS ionospheric TEC observed at Nazareth station in the year of 2011. For the study, the dual frequency signal from GPS shtellite is recorded at Nazareth (8.568 0 N , 39.291 E) near the deep equator. These signals coming from the GPS satellite have been analyzed to study the iono spheric variation in terms of Total electron content (TEC). These observations were investigated and further discussed with an analysis of the midday Disturbance Storm Time (Dst) index of geomagnetic activity and AP indices, solar radio fiux(F10.7cm) 2011. In particular, a closer analysis indicated that TEC spikes on Day October 22 with a Dst value of -132nT, and September 22 with Dst value of -101nT around the Autumnal equinox, August 26 with Dst value of -107nT around summer solstice occurred during the main phase of the geomagnetic storm. The temporal, diurnal, seasonal, variation of TEC and the space weather effect on the variation of TEC also has been studied and the diurnal variation of TEC shows minimum before sunrise and after sunset. But this is gradually increasing after sunrise reaches maximum at between lOUT-14UT. The maximum TEC has been recorded at Nazareth in autum nal and vernal(spring)equinoctial season; the equinoxes occur around September 22 0 and March 21, when the length of day and night is approximately equal and the sun is overhead at Nazareth station to provide maximum intensity of solar radiation to .. its atmosphere where as TEC is minimum in summer season and intermediate value in winter season.	en_US
dc.subject	PHYSICS	en_US
dc.title	EFFECTS OF SOLAR ACTIVITIES ON CPS IONOSPHERIC TEC OBSERVED AT NAZARETH STATION	en_US
dc.type	Thesis	en_US