Zobrazeno 1 - 10
of 18
pro vyhledávání: '"D. K. Haldar"'
Publikováno v:
Natural Hazards and Earth System Sciences, Vol 10, Iss 4, Pp 843-855 (2010)
The outcome of the results of some analyses of electromagnetic emissions recorded by VLF receivers at 6 kHz and 9 kHz over Agartala, Tripura, the North-Eastern state of India (Lat. 23° N, Long. 91.4° E) during the large earthquake at Muzaffarabad (
Externí odkaz:
https://doaj.org/article/4fc3c892bbc44dedb8b848ab4c055ba0
Transmission of electric fields due to distributed cloud charges in the atmosphere-ionosphere system
Publikováno v:
Advances in Space Research. 60:1891-1897
The transmission of electric fields in the lower atmosphere by thunder clouds with a suitable charge distribution profile has been modeled. The electromagnetic responses of the atmosphere are presented through Maxwell’s equations together with a ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4da35540a8682ee44ccf4aad1d22422
https://doi.org/10.1016/j.asr.2017.06.011
https://doi.org/10.1016/j.asr.2017.06.011
Autor:
Gautam Guha, P P Hazra, D. Kala, D. K. Haldar, S. Barui, Suman Paul, Syam Sundar De, Abhijit Ghosh
Publikováno v:
Earth, Moon, and Planets. 111:79-87
The effect of solar eclipse of July 22, 2009, obscuring up to 91 %, upon the value of point discharge current (PDC) has been reported in this paper. The observation had been taken from Kolkata (Lat. 22.56°N, Long. 88.5°E). During the eclipse period
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c451e243267129d8b91529ef739ab96b
https://doi.org/10.1007/s11038-013-9424-4
https://doi.org/10.1007/s11038-013-9424-4
Publikováno v:
Astrophysics and Space Science. 361
The space between the two spherical conducting shells, Earth surface and the lower boundary of the ionosphere, behaves as a spherical cavity in which some electromagnetic signals can propagate a long distance and is called Earth-ionosphere waveguide.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::354c9f66cbbce8b0d0943044378ef307
https://doi.org/10.1007/s10509-016-2873-2
https://doi.org/10.1007/s10509-016-2873-2
Autor:
Suman Paul, Sukalyan Chattopadhyay, A. K. Kundu, Syam Sundar De, D. K. Haldar, S. Barui, D. De
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. :20-26
The precursory effects from several earthquakes upon the two subionospheric transmitted signals, one 19.8 kHz from North West Cape, Australia (lat: 21.82°S; long: 114.16°E) and the other 40 kHz from Fukushima, Japan (lat: 37.37°N; long: 140.85°E)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfd9e9e24ca7f9096f1d75a213f9de17
https://doi.org/10.1016/j.jastp.2012.03.007
https://doi.org/10.1016/j.jastp.2012.03.007
Autor:
Suman Paul, B. Bandyopadhyay, A. K. Kundu, Barin Kumar De, Syam Sundar De, D. K. Haldar, S. Barui, D. De, Sukalyan Chattopadhyay
Publikováno v:
Earth, Moon, and Planets. 108:111-121
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 rece
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e914aebdf7c1f9a48917962b4a2c7d2
https://doi.org/10.1007/s11038-011-9386-3
https://doi.org/10.1007/s11038-011-9386-3
Publikováno v:
Journal of Hydroinformatics. 14:512-522
The development of a neurocomputing technique to forecast the average winter shower in India has been modeled from 48 years of records (1950–1998). The complexities in the rainfall–sea surface temperature relationships have been statistically ana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d6dc8e04a30e3d442cccb974cf9608b
https://doi.org/10.2166/hydro.2011.124
https://doi.org/10.2166/hydro.2011.124
Autor:
Goutami Chattopadhyay, Dipak K. Chakrabarty, Suman Paul, D. K. Haldar, Syam Sundar De, Barin K. De
Publikováno v:
Acta Geophysica. 59:361-376
Autoregressive neural network (AR-NN) models of various orders have been generated in this work for the daily total ozone (TO) time series over Kolkata (22.56°N, 88.5°E). Artificial neural network in the form of multilayer perceptron (MLP) is imple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4227bcdefc9965a26fc8b3be59bb1cb
https://doi.org/10.2478/s11600-010-0047-0
https://doi.org/10.2478/s11600-010-0047-0
Autor:
Goutami Chattopadhyay, Suman Paul, Minu Sanfui, Syam Sundar De, D. K. Haldar, S. Barui, Pinaki Pal, Barin Kumar De, B. Bandyopadhyay
Publikováno v:
Astrophysics and Space Science. 332:353-357
The detection of 2009 Leonid, Perseid and Geminid meteor showers over Agartala, Tripura, India (Lat: 23.0° N, Long: 91.4° E) will be reported here by using two VLF receivers tuned to subionospheric transmitted VLF signals at the frequency 16.4 kHz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::018a0cbaef18599816cd3a3b1ee910b2
https://doi.org/10.1007/s10509-010-0513-9
https://doi.org/10.1007/s10509-010-0513-9
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 72:829-836
The variation of the first Schumann resonance (SR) frequency spectra observed from the recorded data over Kolkata (22.56°N, 88.5°E) during a solar proton event (SPE) on July 14, 2000 has been presented. It shows increase in frequency during X-ray b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdc59ce7bd7d3fbb2580a2bc10fc3350
https://doi.org/10.1016/j.jastp.2010.04.004
https://doi.org/10.1016/j.jastp.2010.04.004