AWDA Project

  • We have started a project to detect whistlers with VLF measurements. A VLF antenna has been installed in October 2010 in Humain, Belgium (Lat~50.11 N, Long~5.15 E), in order to detect whistlers and determine electron densities along propagation paths.

  • The VLF antenna is made of two perpendicular magnetic loops, oriented North-South and East-West and with an area of approximately 50 square meters each. The hardware has been installed during winter 2010-2011. After some tests starting in April 2011, the antenna is now fully working since August 2011.

  • This antenna is part of AWDAnet, the Automatic Whistler Detector and Analyzer system's network. This network covers low, mid and high magnetic latitudes including conjugate locations. It has been initiated by J. Lichtenberger (Hungary). Worldwide, 10 antennas are in operation and 23 are planned/in construction.

  • The main goals of this project are to build a statistical analysis of whistlers observed in Belgium, to derive density information along the magnetic field lines and in particular in the plasmasphere, and finaly to compare with density in-situ observations made by the Cluster satellites.

  • We will install another antenna at the Belgian Antarctic station Princess Elisabeth (Lat~71.57°S, Long~23.20°E), with the help of Dr. J. Lichtenberger. This antenna is composed of two search coils, without a mast in order to withstand the weather at such latitudes. We will go to Antarctica in January 2016 to make the installation and proceed to first tests. Then the antenna will record whistlers automatically and the data will be downloaded next year.

 

Content manager: Fabien Darrouzet