Zobrazeno 1 - 10
of 16
pro vyhledávání: '"V. S. Sonwalkar"'
Autor:
A. Reddy, V. S. Sonwalkar
Publikováno v:
2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS).
This paper presents whistler mode (WM) radio sounding measurements of field-aligned electron and ion density in the 90–4000 km altitude as a function of 30 August major storm activity. Electron and ion density measurements were obtained at altitude
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0ab5ec625aad439233a71844e72d23c
https://doi.org/10.23919/ursigass.2017.8105182
https://doi.org/10.23919/ursigass.2017.8105182
Autor:
V. S. Sonwalkar, A. Reddy
Publikováno v:
2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
Field aligned electron (Ne) and ion densities and their variations as a function of geomagnetic storm activity are important parameters in the physics of the thermosphere, ionosphere, and magnetosphere. Whistler mode (WM) radio sounding [Sonwalkar et
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da7419abe25638a5e94445bd61df07bf
https://doi.org/10.1109/usnc-ursi.2015.7303573
https://doi.org/10.1109/usnc-ursi.2015.7303573
Publikováno v:
2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS).
Whistler mode sounding from IMAGE is a unique and novel method that permits remote sensing of field aligned electron density and ion composition in the altitude range 90–4000 km. These measurements are not possible with topside radio sounders utili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b608214d61a591b055d621ffda634d5
https://doi.org/10.1109/ursigass.2014.6929947
https://doi.org/10.1109/ursigass.2014.6929947
Publikováno v:
2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS).
Radio sounding from IMAGE has led to the observations of a large variety of ducted and nonducted fast Z mode echoes. The ducted echoes were observed when IMAGE was located inside a Z mode “cavity,” whereas the nonducted echoes were observed both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9a0a7b6e771d75dc5f7f81a61a13e28
https://doi.org/10.1109/ursigass.2014.6929854
https://doi.org/10.1109/ursigass.2014.6929854
Autor:
V. S. Sonwalkar, Jayashree Harikumar
Publikováno v:
Journal of Geophysical Research: Space Physics. 105:18867-18883
Auroral hiss is one of the most intense whistler mode plasma wave phenomena observed both on the ground at high latitudes and on spacecraft in the auroral zone. Propagation of auroral hiss from its source region to the ground is poorly understood. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57aac642d258b9a69bc7e0b458370455
https://doi.org/10.1029/1999ja000302
https://doi.org/10.1029/1999ja000302
Publikováno v:
All Days.
Traditional thermal methods for heavy oil recovery involve use of steam to heat the wellbore and the reservoir. While the steam-based methods are widely in use and are generally successful, they also have high energy requirements, are not very effici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b35f708366ef063809ca6b06d2dae6b3
https://doi.org/10.2118/154123-ms
https://doi.org/10.2118/154123-ms
Publikováno v:
Journal of Geophysical Research: Space Physics. 116
[1] A companion paper by Sonwalkar et al. (2011) provided new details of whistler mode radio sounding of the altitude range below ∼5000 km by the Radio Plasma Imager (RPI) instrument on the IMAGE satellite. That paper presented frequency-vs- group
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::096682e8b31952ca8712906fe1073360
https://doi.org/10.1029/2011ja016760
https://doi.org/10.1029/2011ja016760
Autor:
R. Proddaturi, A. Reddy, V. S. Sonwalkar, Bodo W. Reinisch, K. Mayank, D. L. Carpenter, S. Hazra
Publikováno v:
Journal of Geophysical Research: Space Physics. 116
[1] A survey of echoes detected in 2004–2005 during pulse transmissions from the Radio Plasma Imager (RPI) instrument on the IMAGE satellite has revealed several new features of sounder generated whistler mode (WM) echoes and has indicated ways in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbe9abecf73b4985866fba3a69fced34
https://doi.org/10.1029/2011ja016759
https://doi.org/10.1029/2011ja016759
Publikováno v:
2011 XXXth URSI General Assembly and Scientific Symposium.
The operating frequency of the Radio Plasma Imager (RPI) instrument on the IMAGE satellite extended from 3 kHz to 3 MHz. This wide range made possible free-space O and X mode sounding from altitudes on both sides of the plasmasphere boundary layer (P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe2a805f7d35f590bbf43b64e60b1326
https://doi.org/10.1109/ursigass.2011.6051105
https://doi.org/10.1109/ursigass.2011.6051105
Autor:
D. L. Carpenter, S. Hazra, R. Proddaturi, A. Reddy, V. S. Sonwalkar, K. Mayank, Bodo W. Reinisch
Publikováno v:
2011 XXXth URSI General Assembly and Scientific Symposium.
This paper presents the results obtained to date on the whistler mode (WM) sounding from the RPI instrument on the IMAGE satellite. Based on their reflection mechanism, the WM echoes are classified as magnetospherically reflected (MR), specularly ref
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1648322a33c21b0643ef52c6a5ec6ca1
https://doi.org/10.1109/ursigass.2011.6051106
https://doi.org/10.1109/ursigass.2011.6051106