Zobrazeno 1 - 10
of 143
pro vyhledávání: '"E. Yizengaw"'
Autor:
A. J. Mazzella Jr., E. Yizengaw
Publikováno v:
Annales Geophysicae, Vol 41, Pp 269-280 (2023)
Previous studies utilizing the Global Positioning System (GPS) receivers aboard Jason satellites have performed measurements of plasmasphere electron content (PEC) by determining the total electron content (TEC) above these satellites, which are at a
Externí odkaz:
https://doaj.org/article/0f2a548ea2694137ab13157b5dcdcbc2
Publikováno v:
Annales Geophysicae, Vol 35, Pp 599-612 (2017)
The confluence of recent instrumentation deployments in Africa with developments for the determination of plasmasphere electron content using Global Positioning System (GPS) receivers has provided new opportunities for investigations in that regio
Externí odkaz:
https://doaj.org/article/49504dd0553d4f6098a5c27b816186e2
Autor:
E. Yizengaw, B. A. Carter
Publikováno v:
Annales Geophysicae, Vol 35, Pp 525-533 (2017)
It has been well documented that the lunar tidal waves can modulate the ionospheric electrodynamics and create a visible influence on the equatorial electrojet (EEJ). The lunar tide influence gets intensified around noon, primarily during new and
Externí odkaz:
https://doaj.org/article/1daf4ad6c8dd4382ad44baad20c04d94
Autor:
F. Tesema, R. Mesquita, J. Meriwether, B. Damtie, M. Nigussie, J. Makela, D. Fisher, B. Harding, E. Yizengaw, S. Sanders
Publikováno v:
Annales Geophysicae, Vol 35, Pp 333-344 (2017)
Measurements of equatorial thermospheric winds, temperatures, and 630 nm relative intensities were obtained using an imaging Fabry–Perot interferometer (FPI), which was recently deployed at Bahir Dar University in Ethiopia (11.6° N, 37.4° E, 3
Externí odkaz:
https://doaj.org/article/3c2b13740b174a00be7502c8265ad608
Autor:
O. Bolaji, O. Owolabi, E. Falayi, E. Jimoh, A. Kotoye, O. Odeyemi, B. Rabiu, P. Doherty, E. Yizengaw, Y. Yamazaki, J. Adeniyi, R. Kaka, K. Onanuga
Publikováno v:
Annales Geophysicae, Vol 35, Pp 123-132 (2017)
In this work, we investigated the veracity of an ion continuity equation in controlling equatorial ionization anomaly (EIA) morphology using total electron content (TEC) of 22 GPS receivers and three ground-based magnetometers (Magnetic Data Acqui
Externí odkaz:
https://doaj.org/article/f40bb28e28ea44f3b1a800b5f623430b
Autor:
E. Yizengaw, M. B. Moldwin, E. Zesta, C. M. Biouele, B. Damtie, A. Mebrahtu, B. Rabiu, C. F. Valladares, R. Stoneback
Publikováno v:
Annales Geophysicae, Vol 32, Pp 231-238 (2014)
While the formation of equatorial electrojet (EEJ) and its temporal variation is believed to be fairly well understood, the longitudinal variability at all local times is still unknown. This paper presents a case and statistical study of the longi
Externí odkaz:
https://doaj.org/article/4d4e2b1ee5c14501bb255a660d888924
Publikováno v:
Annales Geophysicae, Vol 23, Pp 707-721 (2005)
The effects of the 31 March 2001 severe magnetic storm on the Southern Hemisphere ionosphere have been studied using ground-based and satellite measurements. The prime goal of this comprehensive study is to track the ionospheric response from high
Externí odkaz:
https://doaj.org/article/1f426bf7619a48f2ae8a6f7c9c2b3ccd
Publikováno v:
Annales Geophysicae, Vol 22, Pp 2765-2773 (2004)
The ionospheric storm evolution process was monitored during the 22 September 1999 magnetic storm over the Australian eastern region, through measurements of the ionospheric Total Electron Content (TEC) from seven Global Positioning Systems (GPS)
Externí odkaz:
https://doaj.org/article/c8f7a2db4c464e1cb46850d609d0073a
Autor:
M. L. Parkinson, P. L. Dyson, M. Pinnock, J. C. Devlin, M. R. Hairston, E. Yizengaw, P. J. Wilkinson
Publikováno v:
Annales Geophysicae, Vol 20, Pp 1617-1630 (2002)
The geomagnetic conditions were moderately disturbed (Kp = 2) during magnetic midnight on 10 December 1999, when the Tasman International Geospace Environment Radar (TIGER), a Southern Hemisphere HF SuperDARN radar, observed a persistent, sharp
Externí odkaz:
https://doaj.org/article/d43acc62054844558d8f2952138fecb1
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