The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Powerful HF electromagnetic waves transmitted into the ionosphere from the High-frequency Active Auroral Research Program (HAARP) facility in Alaska and the European Incoherent Scatter Scientific Association (EISCAT) facility in Norway have induced artificial aurora with ground-measurable 4278 Å wavelength emissions (B. Gustavsson et al., Ann. Geophys., 23, 1747–1754, 2005; T. B. Pedersen et al.,...
High power radio waves excite electrostatic waves in the ionosphere. Electrostatic waves can be detected either by mode conversion into Stimulated Electromagnetic Emission (SEE) or scatter of radar signals. We present the results of SEE observations conducted through high-power HF heating experiments at the High-Frequency Active Auroral Research Program. Multiple receiving instruments have been used...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.