More about ground measurements
Some measurements from the ground, for example measurement and
registration of the Earth's magnetic fields, are carried out
regularly from several ground stations. In Sveden there are stations
in Abisko Kiruna, Lycksele, Uppsala and on Lovö, an island in
Mälaren.
In Kiruna there is a project for ground measurements called ALIS.
ALIS is constructed of different auroral cameras taking images of the
aurora in northern Scandinavia. The images are received by a computer
in Kiruna that is so fast that you can see images of the aurora on
the screen almost at the same time as it happens.
Different radar instruments for measurements in the ionosphere
(80 to 500 kilometres from the Earth's surface) have been developed
the last 10-20 years. With the different radar instruments you can
measure things occurring in the ionosphere.
The world's most modern radar for measurements in the ionosphere
is named EISCAT and is operated by Finland, France, Norway, Great
Britain, Sweden, Japan and Germany. Some Swedish researchers working
with the EISCAT radar are located at the Swedish Institute of Space
Physics (IRF) in Kiruna and Uppsala.
Pictures: EISCAT
The pictures show some of the antennas used by EISCAT in Norway.
The pictures are taken in Svalbard and Tromsø.
The Svalbard antenna was built in 1996. All the members of EISCAT
invested in the project, including Japan, the newest member of
EISCAT.
HTML: Jenny Jutström
Updated: webmaster@irf.se, 2003-11-12
