Sodankylä Geophysical Observatory
The Sodankylä Ionosonde started regular, half-hourly vertical soundings of the ionosphere on 1st August 1957. The observatory's second sounder (IS-14) was taken into operation on 1st February 1977. This sounder was modified later on. A new era of ionospheric vertical soundings began on 16th November 2005 when the new "Alpha Wolf" ionosonde was taken into use, which was built from scratch as a research ionosonde by the observatory during the previous three years. The new instrument performed soundings every 10 min until early April 2007, when 1-min soundings for the IPY began.
For technical details of the ionosondes used in SGO, see Instrument Descriptions.
For terminology used see:
URSI Handbook of Ionogram Interpretation and Reduction, second Edition, November 1972 by W.R. Piggott and K. Rawer, WDC A, Report UAG-23. April 1993. (download, e.g., here)
We have a list of qualifying and descriptive letters available.
- Dr Alexander Kozlovsky
- Sodankylä Geophysical Observatory
- Tähteläntie 62
- FIN-99600 Sodankylä, Finland
- e-mail: to email@example.com
Last modified: 22 November 2021, 13:50:23.