spase://UOLOU/DisplayData/SGO/VLF/Quicklook/PT1M

ELF-VLF observations have been carried out only during special campaigns since 1989. In addition to broadband (500Hz-38kHz) VLF campaigns SGO operates different kind of VLF observations including receivers of AARDDVARK (Antarctic-Arctic Radiation belt (Dynamic) Deposition - VLF Atmospheric Research Konsortia), WWLLN (World Wide Lightning Location Network) and AWDA (Automatic Whistler Detector and Analyzer) networks. This archive provides quicklook spectrogram plots of VLF broadband data. These data were taken during observing campaigns spanning the years 1993 through the present. The archive contains plots made from data taken at four different stations many of the plots are from 0 to 16 KHz and span 1 minute, 1hour, or 24 hour duration. The stations, locations and campaign date ranges are: Porojärvi station (69.17° N 21.47° E) Campaigns: 1993-01-14 to 1993-01-29 1993-11-09 to 1993-11-16 1995-11-15 to 1995-11-29 1997-01-06 to 1997-01-12 Kalkkoaivi station (68.73° N 22.11° E) Campaigns: 1994-10-02 to 1994-10-08 Siiselkä station (67.82° N 26.08° E) Campaigns: 2005-09-26 to 2005-10-13 Kannuselehto station (67.74° N 26.27° E) Campaigns: 2006-11-20 2006-11-29 2007-10-08 2007-10-19 2008-02-25 2008-03-04 2011-03-28 2011-04-18 2011-12-08 2012-01-04 2012-05-07 2012-06-06 2012-12-10 2012-12-23 2013-01-02 2013-02-08 2013-03-11 2013-04-19 2013-12-05 2014-01-13 2014-02-26 2014-03-26 2014-11-13 2015-01-09 2015-10-29 2016-01-27 2016-10-07 2017-04-25 2017-09-01 2017-10-18 2017-11-09 2018-04-26 2018-08-29 2019-04-25 2019-09-04 2020-04-24 2020-09-14 2021-04-01 To get access to the numerical data contact Dr. J. Manninen.