The Learmonth Solar Radio Spectrograph observes the radio emmission of the Sun from 25MHz to 180 Mhz.
Solar radio spectrograph display radio bursts or "sweep" events. These are classified into particular
types. A "Type 2" spectral burst is believed to be due to plasma emmission that occurs following the passage
of a shock wave through the corona, usually associated with a solar flare. This information can be used
to try and predict the arrival time of the shock at the Earth, and the possible onset of geomagnetic storm activity.
Whilst the frequency range of this instrument is much less than the Culgoora Radiospectrograph, the data
provides IPS and other similar organizations, with extended coverage of solar radio activity, as the
Culgoora Observatory is located in eastern Australia, and the Learmonth Observatory is located in
western Australia. Learmonth Observatory is jointly operated by the United States Airforce and IPS.
See the document A Brief Introduction of Radiospectrogram Analysis for more information of spectrogram events.
Solar