IOP Conference Series: Earth and Environmental Science PAPER • OPEN ACCESS Interannual variations of the intensity of narrowband VLF radio noise and radio station signals registered in Yakutsk in 2009-2017 To cite this article: A A Korsakov et al 2018 IOP Conf. Ser.: Earth Environ. Sci. 211 012006 View the article online for updates and enhancements. This content was downloaded from IP address 181.214.102.230 on 19/12/2018 at 12:55