Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Mani Sivakandan"'
Autor:
Kate Zawdie, Anna Belehaki, Meghan Burleigh, Min-Yang Chou, Manbharat S. Dhadly, Katelynn Greer, Alexa J. Halford, Dustin Hickey, Pavel Inchin, Stephen R. Kaeppler, Jeff Klenzing, Viswanathan Lakshmi Narayanan, Fabrizio Sassi, Mani Sivakandan, Jonathon M. Smith, Nikolay Zabotin, Matthew D. Zettergren, Shun-Rong Zhang
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
The impact of regional-scale neutral atmospheric waves has been demonstrated to have profound effects on the ionosphere, but the circumstances under which they generate ionospheric disturbances and seed plasma instabilities are not well understood. N
Externí odkaz:
https://doaj.org/article/1829294b75a24886bd1c5012c0e28f36
Autor:
Mani Sivakandan, Yuichi Otsuka, Priyanka Ghosh, Hiroyuki Shinagawa, Atsuki Shinbori, Yasunobu Miyoshi
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-16 (2021)
Abstract The total electron content (TEC) data derived from the GAIA (Ground-to-topside model of Atmosphere Ionosphere for Aeronomy) is used to study the seasonal and longitudinal variation of occurrence of medium-scale traveling ionospheric disturba
Externí odkaz:
https://doaj.org/article/29bddb875a6d4cd3a0ae098b7d6953c9
Autor:
Mani, Sivakandan, Mielich, Jens, Verhulst, Tobias, Buresova, Dalia, Barta, Veronika, Belehaki, Anna, Altadill, David, Segarra, Antoni, Kouba, Daniel, Berenyi, Kitti
T-FORS project aims at providing new models able to interpret a broad range of observations of the solar corona, the interplanetary medium, the magnetosphere, the ionosphere and the atmosphere, and to issue forecasts and warnings for TIDs several hou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09f2b0be7a78e1aeac1e085548adcc27
Publikováno v:
eISSN
The bottom part of the earth’s ionosphere is the so-called D-region, which is typically less intense than the upper regions. Despite the comparably lower electron number density, the ionization state of the D-region has a significant influence on s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::224412ea13045f8182e777c797d09cab
https://egusphere.copernicus.org/preprints/2023/egusphere-2023-815/
https://egusphere.copernicus.org/preprints/2023/egusphere-2023-815/
Observations using Arecibo Observatory’s highly sensitive Incoherent Scattering Radar (AO-ISR) show ionospheric descending layers from as high as $\sim$400 km, much higher than earlier studies, with continuity down to 90 km. The AO-ISR was operated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dbe6a1c8f166d3e0048f63f347a69a8
https://doi.org/10.22541/essoar.168056804.48068779/v1
https://doi.org/10.22541/essoar.168056804.48068779/v1
Investigation of a Dissipating Mesospheric Bore Using Airglow Imager and Direct Numerical Simulation
Autor:
Kesava Ramachandran, Mani Sivakandan, Jorge L. Chau, Juan M. Urco, Michael Gerding, Sven Grundmann, Steven M. Smith
Publikováno v:
Journal of Geophysical Research: Space Physics. 128
Publikováno v:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Long-term changes are challenging and debatable research topics because of the estimation method and the social relevance in the climate change scenario. Studies on the long-term changes in the upper atmosphere yield more attention in the last three
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6eb2f3f00b4821bd9b7e92b6b396f689
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016009
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016009
Autor:
Mani Sivakandan, Carlos Martinis, Yuichi Otsuka, Jorge L. Chau, Jessica Norrell, Jens Mielich, J. Federico Conte, Claudia Stolle, J. Rodríguez‐Zuluaga, Atsuki Shinbori, Michi Nishioka, Takuya Tsugawa
Publikováno v:
Journal of Geophysical Research: Space Physics
Simultaneous observations from a 630 nm all-sky airglow imager, GNSS-TEC receivers, and an ionosonde are used to investigate the role of E- and F-region coupling on the generation of medium-scale traveling ionospheric disturbances (MSTIDs). The prima
Sporadic E (Es) is a thin layer of metallic ion plasma that forms in the E region of the Earth’s ionosphere, mostly between 90 and 125 km. It can affect the radio frequencies in the HF range of up to 30 MHz. In the mid-latitudes, the wind shear mec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11e1216b8a9307fd47814bd06d28de07
https://doi.org/10.5194/egusphere-egu22-5895
https://doi.org/10.5194/egusphere-egu22-5895
Northwest to southeast phase fronts with southwestward moving features are commonly observed in the nighttime midlatitude ionosphere during the solstice months at low solar activity. These features are identified as nighttime MSTIDs (medium scale tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6359cae3e2c5451ebc85a6482c2679f
https://doi.org/10.5194/egusphere-egu21-12929
https://doi.org/10.5194/egusphere-egu21-12929