Numerical modeling of ionospheric modification with powerful HF pump waves

作者：Ni Bin Bin^*; Zhao Zheng Yu; Xiang Wei; Wei Han Ying

来源：Chinese Journal of Radio Science, 2004, 19(3): 274-279+289.

• Electron temperature
• High frequency pump waves
• Ionospheric heating
• Radio frequency
• Transmitted power

A numerical model of the typical ionosphere based on ohm heating was developed and utilized to simulate the ionospheric response to high-power radio waves. This model produces the time variations of the electron temperature, electron and ion densities, as well the dependence of the artificial turbulence on radio frequency and transmitted power. The results indicate that a salient ionospheric turbulence with electron temperature increased by 80 percent and electron density by 16 percent can be obtained with a 13 MHz pump wave and 1.5 MW transmitted power. Electron temperature and electron density reach their saturation in several seconds and a few minutes, respectively. A close but nonlinear correlation was also present between their changes and pump frequency and radiation power. The comparison of these numerical results with the EISCAT observation of one heating experiment on 02/26/1985 indicates that these two results match each other well below 180 kilometer. The distinct difference between the numerical results and the experimental one at higher altitudes is due to anomalous heating of the F-layer ionosphere.

• 出版日期2004
• 单位武汉大学