Mathematical modeling of plasma drifts over equatorial low latitude regions

被引：1

作者：

Sundaresan, S. ^{[1
]}

Rao, B. Nageswara ^{[1
]}

机构：

[1] Vikram Sarabhai Space Ctr, Struct Anal & Testing Group, Trivandrum 695022, Kerala, India

来源：

ADVANCES IN SPACE RESEARCH | 2010年 / 46卷 / 05期

关键词：

Electric fields; Vertical and zonal plasma drifts; Neutral winds; E-region dynamo; F-region dynamo; DYNAMO ELECTRIC-FIELD; F-REGION; SOLAR TIDES; SPREAD-F; IONOSPHERE; WINDS;

D O I：

10.1016/j.asr.2010.04.029

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

This paper presents a mathematical model to simulate ionospheric plasma drifts at equatorial low latitude regions by coupling of E- and F-regions. The governing non-linear differential equations (of elliptic and parabolic nature) are solved numerically through finite-difference schemes and obtained neutral winds and electric fields. The temperature and electron density profiles are generated utilizing MSIS-86 atmospheric model. The continuity equation is employed to obtain night-time E-region density profile using measured ionograms at Trivandrum (India). The computed vertical and zonal plasma drifts are comparable with measured Jacamarca plasma drifts with little variations during noon and evening times. The plasma drifts at Trivandrum (8.5 degrees N, 76.5 degrees E, dip 0.5 degrees N) are compared with those of Jicamarca (12 degrees S, 76.9 degrees W, dip 2 degrees N). Neutral wind simulations of present model agree well with those of horizontal wind model (HWM-93). The post-sunset enhancement and its reversal are also discussed. (C) 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：626 / 636

页数：11

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