Subionospheric VLF perturbations observed at a low latitude station Varanasi (L=1.07)

被引：1

作者：

Singh, Ashutosh K. ^{[1
,2
]}

Singh, A. K. ^{[1
]}

Singh, R. ^{[3
]}

Singh, R. P. ^{[1
]}

Adams, K. ^{[4
]}

Dowden, R. L. ^{[4
]}

机构：

[1] Banaras Hindu Univ, Dept Phys, Atmospher Res Lab, Varanasi 221005, Uttar Pradesh, India

[2] Raja Balwant Singh Engn Tech Campus, Agra, Uttar Pradesh, India

[3] IIG, KSK Geomagnet Res Lab, Allahabad, Uttar Pradesh, India

[4] Low Frequency Electromagnet Res Ltd, Dunedin, New Zealand

来源：

ADVANCES IN SPACE RESEARCH | 2015年 / 55卷 / 02期

关键词：

Earth-ionosphere waveguide; Early VLF events; Lightning; Trimpi event; SPRITES94 AIRCRAFT CAMPAIGN; LOWER IONOSPHERE; RED SPRITES; SIGNATURES; IONIZATION; SCATTERING; ASSOCIATION; DISCHARGES; EVENTS; ELVES;

D O I：

10.1016/j.asr.2014.10.032

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Initial results of subionospheric very low frequency (VLF) perturbations observed on NWC (19.8 kHz) and NPM (21.4 kHz) transmitter signals at low latitude ground station Varanasi, India, during the period January-June 2010, are presented. Characteristics and occurrence rates of these events mainly observed during nighttime are studied. Most of the early VLF events had slow recovery with amplitude perturbations of 0.5-4.5 dB and phase changes of 3-12 degrees. Temporal variation of the events is studied. World Wide Lightning Location Network data along with the broadband VLF data are analyzed to find the location of causative lightning discharge and/or the sferics associated with these early VLF events. Lightning induced changes in D-region ionospheric conductivity are attributed to the perturbations in the VLF signals. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：576 / 585

页数：10

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