Antarctic Science

Physical Sciences

Automatic scaling of polar ionograms

Carlo Scottoa1a2 and Michael Pezzopanea1 c1

a1 Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143 Rome, Italy

a2 Doctoral School in Polar Sciences, University of Siena, Via del Laterino 8, 53100 Siena, Italy


The Istituto Nazionale di Geosifica e Vulcanologia (INGV) software for automatic scaling of ionograms (Autoscala) was improved by introducing a system to identify D region absorption events, spread-F condition (frequency spreading in the F region), and Z-ray propagation. The algorithm was applied to a series of ionograms recorded by the AIS-INGV (Advanced Ionospheric Sounder-INGV) ionosonde installed at the Mario Zucchelli Station (74.7°S, 164.1°E), Terra Nova Bay, Antarctica. Critical cases are shown to illustrate the behaviour of the software.

(Received April 06 2011)

(Accepted July 02 2011)

(Online publication September 23 2011)


c1 corresponding author: