DEPENDENCE OF TOTAL ELECTRON CONTENT OVER KAZAKHSTAN REGION ON SOLAR ACTIVITY

Abstract

Annotation. In the paper there are given results of the research of total electron content behavior over Kazakhstan region in the period from 1999 to 2013. The investigated period covers different levels of Solar activity (SA): high (1999-2002), when the Solar radio flux F10.7>150; middle F10.7=100÷150  (2003-2004 – the phase of decrease in SA); low F10.7<100 (2005-2010, when there is the deepest minimum of the SA in the last 100 years, in particular in the years 2007-2009); middle F10.7=100÷150 (2011-2013 – phase of increasing and abnormal low SA maximum). It has been shown that the variations of total electron content I(t), as well as of the electron density “follow” changes in Solar activity. 

Keywords: total electron content, Solar activity, the Ionosphere.