INVERSION OF BACKSCATTER IONOGRAMS INTO QUASIPARABOLIC IONOSPHERIC LAYER PARAMETERS

Journal Title: Solar-Terrestrial Physics - Year 2020, Vol 6, Issue 3

Abstract

We present an inversion scheme of the backscatter signal leading edge into parameters of the quasi-parabolic electron density profile, which is based on the comparison of experimental and calculated minimum delays of scattered signals with corresponding distance to the skip zone border. Input parameters are frequency dependences of minimum group path of signal propagation, derived from processing and interpreting backscatter ionograms. For a fixed sounding frequency, the ionospheric parameter pair — the critical frequency and height of the F2-layer maximum — is defined as the intersection point of two curves representing solutions of minimization problems for discrepancy functionals of the minimum group path and the range to the skip zone border. Determining the ionospheric parameters by this inversion scheme on the sounding frequency grid allows us to construct a two-dimensional distribution of electron density in the direction of backscatter sounding.

Authors and Affiliations

Ponomarchuk S. N. , Penzin M. S.

Keywords

Related Articles

EARTHQUAKES AND GEOMAGNETIC DISTURBANCES

The article addresses the problem of the connection of earthquakes with geomagnetic phenomena. We have carried out an experimental study using a method based, firstly, on the separation of periods of geomagnetic activity...

ANALYZING SOLAR, COSMIC, AND GEOPHYSICAL EVENTS IN SEPTEMBER 2017 USING SHICRA SB RAS COMPLEX OBSERVATIONS

We report the results of monitoring of cosmic rays and geomagnetic field along 210 magnetic meridians in Yakutia in the first half of September 2017. The energy spectrum of solar cosmic rays during Ground Level Enhanceme...

THE PROCESSES OF ENERGY RELEASE IN LOW-POWER SOLAR FLARES

Using flare patrol data for 1972–2010 [http://www.ngdc.noaa.gov/stp/space-weather/solar-data/solar-features/solar-flares/], we have conducted statistical studies of small solar flares. We have established a correlation b...

COHERENT MICROWAVE EMISSION AS AN INDICATOR OF NON-THERMAL ENERGY RELEASE AT A CORONAL X-RAY POINT

A response has been found in a narrow band 5–7 GHz of microwave emission to the appearance of a coronal X-ray point. The emission source is a short X-ray loop located in the tail part of an active region and occurring wh...

Studying the small-scale structure of a polarization jet during the April 20, 2018 geomagnetic storm

In this work, we study the small-scale structure of a polarization jet in the subauroral region during the April 20, 2018 geomagnetic storm. We report measurement results of plasma parameters inside the polarization jet...

Download PDF file
  • EP ID EP700075
  • DOI 10.12737/stp-63202009
  • Views 110
  • Downloads 0

How To Cite

Ponomarchuk S. N. , Penzin M. S. (2020). INVERSION OF BACKSCATTER IONOGRAMS INTO QUASIPARABOLIC IONOSPHERIC LAYER PARAMETERS. Solar-Terrestrial Physics, 6(3), -. https://europub.co.uk/articles/-A-700075