A QUIET DAY EMPIRICAL MODEL OF ELECTRON DENSITY IN THE INDIAN EQUATORIAL F-REGION
Journal Title: Solar-Terrestrial Physics - Year 2023, Vol 9, Issue 1
Abstract
In this paper, we present a quiet day empirical model of electron density (Ne) for the Indian equatorial zone at an altitude of 500 km. The model is applicable to all levels of solar activity and is based on the observation that the electron density in the F-region of the Indian zone is correlated with the F10.7 cm solar flux at each local time and in every month. Using this characteristic, we describe the model for electron density. In this model, we have used the least square fit and the polynomial fit. The electron density measured by the Retarding Potential Analyzer (RPA) on board the SROSS C2 satellite from 1995 to 2000 and FORMOSAT-1 (ROCSAT-1) satellite, operated by the National Space Organization (NSPO, now the Taiwan Space Agency (TASA)) of the Republic of China (Taiwan), from 1999 to 2004 is used to derive the relationship between Ne and F10.7. The average altitudes of SROSS-C2 and FORMOSAT-1 are 500 km and 600 km respectively. Due to this height difference, the observed data obtained by FORMOSAT-1 is normalized to match the SROSS-C2 data. The model is compared with the observations and is found to be in good agreement with them. It is applicable to quiet (Ap<15) conditions and is limited to a fixed altitude of 500 km within the latitude range of 10° S to 10° N around the 75° E meridian.
Authors and Affiliations
Chamua M. , Bhuyan P. K. , Bhuyan K.
Keywords
Related Articles
- EP ID EP714644
- DOI 10.12737/stp-91202308
- Views 56
- Downloads 0
NATURAL ELECTROMAGNETIC OSCILLATIONS IN 4–12 HZ FREQUENCY RANGE AS MEASURED BY SWARM SATELLITES AND CARISMA MAGNETOMETER NETWORK
We examine magnetic field variations at 4–12 Hz frequencies in the upper ionosphere and on Earth. The ground response to the coherent oscillations at two SWARM satellites near and above the high frequency boundary of the...
STATISTICAL RELATION OF TRAVELING IONOSPHERIC DISTURBANCES WITH NEUTRAL WIND AND DISTURBANCES IN THE STRATOSPHERE
Using the representative statistics on traveling ionospheric disturbances (TIDs) obtained by Yekaterinburg and Magadan radars, we have shown that distributions of TIDs and average TID velocities by azimuths and local tim...
GEOMAGNETIC DATA RECOVERY APPROACH BASED ON THE CONCEPT OF DIGITAL TWINS
There is no ground-based magnetic station or observatory that guarantees the quality of information received and transmitted to it. Data gaps, outliers, and anomalies are a common problem affecting virtually any ground-b...
DIAGNOSTICS OF AURORAL OVAL BOUNDARIES ON THE BASIS OF THE MAGNETOGRAM INVERSION TECHNIQUE
It is shown that the convection reversal boundary is a fundamental parameter of the magnetosphere-ionosphere coupling, which determines a strong analogy between the electrostatic potential of the ionosphere and the equiv...
QUASI-PERIODIC OSCILLATIONS OF SMALL-SCALE MAGNETIC STRUCTURES AND A SPECIFIC METHOD FOR MEASURING THE DIFFERENTIAL ROTATION OF THE SUN
The SDO/HMI data with an angular resolution of 1 arcsec have been used to explore the differential rotation on the Sun, using an original “p2p” effect on the basis of the movement of small-scale magnetic structures in th...