ESTIMATION OF THE ELF CURRENT PRODUCED BY HEATING THE IONOSPHERE ARTIFICIALLY IN CHINA AREA
中国地区人工加热电离层产生的极低频电流预测

The strengths of the ELF currents produced by heating the ionospheres over Beijing, Shanghai and Haikou by powerfully modulated HF wave are calculated under a typical transmitting condition, using the practical parameters of the ionospheres. The start point of the calculation is the electron energy equation, however, a new iterative method is developed to treat the pulse modulation. This algorithm is also applied to study the heated properties of the ionosphere at typical middle latitudes and the results are compared with that by previous authors for high latitudes.