Analysis of abnormally enhanced ion line power spectra structure in ionospheric heating experiments

Polar autumn ionospheric heating experiments were carried out by China in September 2010 at Tromso, Norway. In the experiments, some different structures of ion lines spectra caused by heating are observed. With the experimental data on September 5, 6, 13, 15, four abnormal spectra structures of ion lines are given, and some explanation is presented. Our work will provide some suggestion for the inversion of ionospheric parameters with abnormal ion lines spectra in heating experiments.