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Two Types of Elf Hiss Observed at Varanasi, India : Volume 17, Issue 10 (30/11/-0001)

By Singh, D. K.

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Book Id: WPLBN0003990976
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Two Types of Elf Hiss Observed at Varanasi, India : Volume 17, Issue 10 (30/11/-0001)  
Author: Singh, D. K.
Volume: Vol. 17, Issue 10
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Singh, A. K., Singh, D. K., Singh, R. P., Patel, R. P., & Singh, A. K. (-0001). Two Types of Elf Hiss Observed at Varanasi, India : Volume 17, Issue 10 (30/11/-0001). Retrieved from

Description: Atmospheric Research Laboratory, Department of Physics, Banaras Hindu University, Varanasi-221005, India. The morphology of ELF hiss events observed at low-latitude ground station Varanasi (L = 1.07, geomagnetic latitude 14°55'N) are reported, which consist of two types: (1) events which propagated in ducted mode along the geomagnetic field line corresponding to observing station Varanasi and (2) events which propagated in ducted mode along higher L-values (L = 4–6), after reaching the lower edge of ionosphere excite the Earth-ionosphere wave guide and propagate towards equator to be received at Varanasi. To understand the generation mechanism of ELF hiss, incoherent Cerenkov radiated power from the low latitude and middle latitude plasmasphere are evaluated. Considering this estimated power as an input for wave amplification through wave-particle interaction, the growth rate and amplification factor is evaluated which is too small to explain the observed wave intensity. It is suggested that some non-linear mechanism is responsible for the generation of ELF hiss.

Key words. Ionosphere (equatorial ionosphere; ionosphere · magnetosphere interactions; wave · particle interactions)

Two types of ELF hiss observed at Varanasi, India


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