Zobrazeno 1 - 10
of 24
pro vyhledávání: '"S. G. Sumod"'
Autor:
S. G. Sumod, Tarun Kumar Pant
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-8 (2019)
Abstract The response of equatorial ionosphere–thermosphere system to the X3.8 solar flare of January 17, 2005 has been studied using the coordinated measurements of GPS-derived Total Electron Content (TEC), OI 630.0 nm dayglow and magnetic field m
Externí odkaz:
https://doaj.org/article/db3e70a63ce14741b412373a44b242cb
Publikováno v:
Annales Geophysicae, Vol 29, Pp 421-426 (2011)
This letter reports unique observations, illustrating the vertical coupling between the daytime mesopause and F-region of the ionosphere over the magnetic dip equatorial station Trivandrum (8.5° N, 76.5° E, 0.5° N dip lat.) in India. For the "f
Externí odkaz:
https://doaj.org/article/d37689aa333247c59d6db4b0328a5055
Publikováno v:
Annales Geophysicae, Vol 28, Pp 2007-2013 (2010)
The Planetary Waves (PWs) are believed to have significant role in generating the wintertime warming over the polar stratosphere, known as Stratospheric Sudden Warming (SSW). However, the origin, characteristics and evolution of these waves are st
Externí odkaz:
https://doaj.org/article/2ef7934cafd947c782d85703deb8bd87
Publikováno v:
Annales Geophysicae, Vol 28, Pp 2071-2077 (2010)
This paper presents measurement of daytime Sodium (Na) airglow emissions at 589.6 nm wavelength using a ground based 1-m scanning monochromator from Trivandrum (8.5° N, 77° E, 0.5° N dip latitude), a near-equatorial station in India. The Na emi
Externí odkaz:
https://doaj.org/article/66d2f1f335904fe7973e3549c6ce43fa
Autor:
S. R. Prabhakaran Nayar, T. J. Mathew, C. V. Sreehari, S. G. Sumod, C. V. Devasia, S. Ravindran, V. Sreeja, T. Kumar Pant, R. Sridharan
Publikováno v:
Annales Geophysicae, Vol 27, Pp 107-111 (2009)
The electrodynamics of the pre-sunrise equatorial F-region is investigated using HF Doppler radar and digital ionosonde. The observations are limited to those days for which the radar probing frequency is below the foF2 value. The ionosphere obser
Externí odkaz:
https://doaj.org/article/ace226b548414cafa9430b391f69bfd6
Publikováno v:
Indian Journal of Science and Technology. 13:3642-3651
Background/ Objective: University of Kerala, Thiruvananthapuram ( 8.5◦N ,77◦E, dip 0.5◦N ) in India had a lively Space Physics research group since 1982, owing to proximity of the location to the geomagnetic dip equator. In 1982, a single frequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44c6244c15e2db7b8a3272a92392e87c
https://doi.org/10.17485/ijst/v13i35.1084
https://doi.org/10.17485/ijst/v13i35.1084
Autor:
T K Pant, S. G. Sumod
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-8 (2019)
The response of equatorial ionosphere–thermosphere system to the X3.8 solar flare of January 17, 2005 has been studied using the coordinated measurements of GPS-derived Total Electron Content (TEC), OI 630.0 nm dayglow and magnetic field measuremen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f20538ab131fb5f038ab90091cc132d7
http://link.springer.com/article/10.1186/s40623-019-1105-8
http://link.springer.com/article/10.1186/s40623-019-1105-8
Publikováno v:
Annales Geophysicae, Vol 28, Pp 2007-2013 (2010)
The Planetary Waves (PWs) are believed to have significant role in generating the wintertime warming over the polar stratosphere, known as Stratospheric Sudden Warming (SSW). However, the origin, characteristics and evolution of these waves are still
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e778799e7177b8b4218697753a6c1fa
https://www.ann-geophys.net/28/2007/2010/
https://www.ann-geophys.net/28/2007/2010/
Publikováno v:
Space Weather. 13:211-219
Equatorial spread F observations have been categorized into three categories based on ionograms recorded over Sriharikota. First category comprised cases where the onset of equatorial spread F (ESF) was concurrent with the peak h′F time. Second and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::196a3ad498aeb5939686013989965509
https://doi.org/10.1002/2014sw001129
https://doi.org/10.1002/2014sw001129
Publikováno v:
Journal of Geophysical Research: Space Physics. 120:2110-2117
Evidence for simultaneous changes in the thermosphere and mesopause associated with penetration electric fields using the OI 630.0 nm and OH (8, 3) dayglow measurements are presented. An unusual decrease in the thermospheric OI 630.0 nm dayglow and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7427fed9f26ac1974be1da2644c6149
https://doi.org/10.1002/2014ja020584
https://doi.org/10.1002/2014ja020584