GPS TEC Scintillations and TEC depletion as seen from Hetauda and NAST, Nepal for 2016

Abstract

We analyzed Global positing System Total Electron Content (GPS-TEC) data of stations Hetauda (27.414 ⁰N and 85.051 ⁰E) and NAST (27.656 ⁰N and 85.327 ⁰E), Nepal which are a part of UNAVCO.We obtained the variation of rate of TEC index (ROTI) and S₄ index throughout the year 2016 for the two stations involved for the 32 all the Pseudo-Random Noise (PRN) numbers barring PRN number 4 which was inactive throughout the year. We chooses two stations data which are almost 40 km in distance and correlated the value of ROTI index with ROTI index and S₄ index with S₄ index and found that the ROTI index of Hetauda is well correlated with ROTI index of NAST with the highest being 94% for PRN 10 and the lowest being -13% for PRN 1. An extremely low correlation between S₄ index of Hetauda and S₄ index of NAST was observed with the highest correlation being 8% in PRN 3, 32 and the lowest correlation of -15% in PRN 12.

BIBECHANA 18 (2) (2021) 87-94