Several experiments were undertaken at Kolkata (latitude: 22°34′N, longitude: 88°30′E) on the solar eclipse day of August 1, 2008 to observe the effects of the solar eclipse on Fair Weather Field (FWF) and VLF amplitude and phase. The experimental results presented here show significant deviations of the observed parameters from their normal values, as they are determined by the average of the records obtained on 5 days adjacent to the day of the solar eclipse. © 2009 Birkhäuser Verlag Basel/Switzerland.

S S DE

B K DE

B BANDYOPADHYAY

B K SARKAR

S PAUL

D K HALDAR

S BARUI

A DATTA

S S PAUL

N PAUL

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Pure and Applied Geophysics

Two consecutive large earthquakes having M values 7.8 and 7.3 occurred on April 25 and May 12, 2015, respectively at Nepal. During their occurrences, abrupt increase in greenhouse gases (like CO2, CH4, H2 etc.) and enhancement of radon emanations are found. These attain high momentum that introduce anomaly in the fluid expulsion from seismically active faults which produce air ionization before these large earthquakes. The process may be very much related to the latent heat release due to condensation of ionized aerosols, produced by energetic alpha particles from radon just before the earthquake. This probably introduces changes in the observed meteorological parameters in the region. Such variations may be due to siesmo tectonically induced radon anomaly before the earthquake. Copyright © 2017, IGI Global.

International Journal of Geotechnical Earthquake Engineering

Thermal anomalies around the time of Nepal Earthquakes M 7.8 April 25, 2015 and M 7.3 May 12, 2015

The effects of 2009 Leonid Meteor Shower upon the two VLF subionospheric transmitted signals and vertical electric potential gradient from the ground surface have been studied from Kolkata (Lat: 22. 56°N, Long: 88. 5°E) on November 17, 2009. The received signals showed their peak values when ZHR (Zenithal Hourly Rate) was highest. Some typical variations in the outcome of these measurements during the meteor showers will be presented in this paper. © 2012 Springer Science+Business Media B.V.

Earth, Moon and Planets

Studies on the Effects of 2009 Leonid Meteor Shower on Subionospheric Transmitted VLF Signals and Vertical Electric Potential Gradient

Annales Geophysicae

Sunset transition of negative charge in the D-region ionosphere during high-ionization conditions

Radio Science

Total solar eclipse effects on VLF signals: Observations and modeling

Journal of Atmospheric and Solar-Terrestrial Physics

The global atmospheric electric circuit, solar activity and climate change

Physics Today

The Global Electric Circuit

Modelling electric and magnetic fields due to thunderclouds and lightning from cloud-tops to the ionosphere

The Effects of Solar Eclipse of August 1, 2008 on Earth's Atmospheric Parameters

Journal	Data powered by TypesetPure and Applied Geophysics
Publisher	Data powered by TypesetSPRINGER BASEL AG
ISSN	0033-4553