Zobrazeno 1 - 10
of 18
pro vyhledávání: '"C. Bridgwood"'
Autor:
Russell Stoneback, Sandro M. Radicella, A.H. Ejalonibu, Keith M. Groves, Andrew O. Akala, Patricia H. Doherty, Charles S. Carrano, C. Bridgwood
Publikováno v:
Advances in Space Research. 59:1969-1983
This study characterizes GNSS amplitude scintillations over an African equatorial station: Addis Ababa (Lat 9.03°N, Lon 38.77°E, Mag. lat 0.18°N), Ethiopia during a five-year period (2009–2013). Scintillations were majorly localized within the h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbc312e0a830e772e88da33f1efeabab
https://doi.org/10.1016/j.asr.2017.01.044
https://doi.org/10.1016/j.asr.2017.01.044
Autor:
Endawoke Yizengaw, John M. Retterer, Brett Carter, Ronald G. Caton, Rezy Pradipta, Kefei Zhang, Keith M. Groves, C. Bridgwood, Robert J. Norman, Cesar E. Valladares
Publikováno v:
Journal of Geophysical Research: Space Physics. 121:894-905
An analysis of the occurrence of equatorial plasma bubbles (EPBs) around the world during the 2015 St. Patrick's Day geomagnetic storm is presented. A network of 12 Global Positioning System receivers spanning from South America to Southeast Asia was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::554b143aa3a108eac4b6bb5677bbf311
https://doi.org/10.1002/2015ja022194
https://doi.org/10.1002/2015ja022194
Autor:
Endawoke Yizengaw, John M. Retterer, Keith M. Groves, C. Bridgwood, K. C. Wiens, Ronald G. Caton, M. Francis, Michael Terkildsen, Simon Wing, Kefei Zhang, Brett Carter, Robert J. Norman
Publikováno v:
Geophysical Research Letters. 41:8176-8184
The feasibility of predicting the daily occurrence of Global Positioning System scintillation events using forecasts of common geophysical indices to drive a physics-based model of the system is demonstrated over a 5 month period for the African and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cda3b2550ea5cbaacc9c6c835c85a25a
https://doi.org/10.1002/2014gl062203
https://doi.org/10.1002/2014gl062203
Autor:
Keith M. Groves, Ronald G. Caton, Kefei Zhang, M. Francis, Michael Terkildsen, Brett Carter, L. McNamara, Robert J. Norman, Endawoke Yizengaw, John M. Retterer, C. Bridgwood
Publikováno v:
Geophysical Research Letters. 41:5331-5339
Describing the day-to-day variability of Equatorial Plasma Bubble (EPB) occurrence remains a significant challenge. In this study we use the Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIEGCM), driven by solar (F10.7) and geoma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf0e03aade0c8babae96fbc77cdf731b
https://doi.org/10.1002/2014gl060953
https://doi.org/10.1002/2014gl060953
Autor:
Charles S. Carrano, Patricia H. Doherty, C. Bridgwood, E.O. Somoye, G. K. Seemala, Andrew O. Akala, Keith M. Groves, L. L. N. Amaeshi
Publikováno v:
Advances in Space Research. 53:37-47
This study characterizes equatorial scintillations at L-band frequency over Lagos, Nigeria during the minimum and ascending phases of solar cycle 24. Three years (2009–2011) of amplitude scintillation data were used for the investigation. The data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53ea94f09a5b025232fb431ed8e69f9a
https://doi.org/10.1016/j.asr.2013.09.034
https://doi.org/10.1016/j.asr.2013.09.034
Autor:
Patricia H. Doherty, C. Bridgwood, Charles S. Carrano, Ronald G. Caton, V. V. Paznukhov, F. D'Ujanga Mutonyi, G. K. Seemala, G. M. Tsidu, Jared O. H. Ndeda, Bonaventure Okere, O. K. Obrou, Cesar E. Valladares, Paul Baki, J.O. Adeniyi, Keith M. Groves, L. L. N. Amaeshi, Baylie Damtie
Publikováno v:
Annales Geophysicae, Vol 30, Pp 675-682 (2012)
We report on the longitudinal, local time and seasonal occurrence of equatorial plasma bubbles (EPBs) and L band (GPS) scintillations over equatorial Africa. The measurements were made in 2010, as a first step toward establishing the climatology of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::493d1690338e7ba659d6cb3661022aeb
https://doi.org/10.5194/angeo-30-675-2012
https://doi.org/10.5194/angeo-30-675-2012
Autor:
G. K. Seemala, Andrew O. Akala, Keith M. Groves, Raphael Idolor, E.O. Somoye, Paul Baki, Charles S. Carrano, Emeka Emmanuel Okoro, L. L. N. Amaeshi, C. Bridgwood, Patricia H. Doherty, Florence Mutonyi D'ujanga
Publikováno v:
Astrophysics and Space Science. 357
This study characterizes African equatorial scintillations at L-band frequency during the minimum and ascending phases of solar cycle 24. Three years’ (2009–2011) of amplitude scintillation data from three African equatorial GPS stations, namely;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4e797d811a48e1d22e57986fcde2ffb
https://doi.org/10.1007/s10509-015-2292-9
https://doi.org/10.1007/s10509-015-2292-9
Publikováno v:
13th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 26–29 August 2013.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddd88396b3485279e63a83b1b1720bcb
https://doi.org/10.1190/sbgf2013-393
https://doi.org/10.1190/sbgf2013-393
Autor:
C. Bridgwood, Ronald G. Caton, Charles S. Carrano, Santimay Basu, John M. Retterer, Keith M. Groves
Publikováno v:
2011 XXXth URSI General Assembly and Scientific Symposium.
The Communication/Navigation Outage Forecast System (C/NOFS) satellite was launched in April 2008 for the purpose of specifying and forecasting equatorial ionospheric scintillation. For the first two years on orbit the satellite operated in a period
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3309f06dddb5c2a32c7f4033c2fb2ba4
https://doi.org/10.1109/ursigass.2011.6050913
https://doi.org/10.1109/ursigass.2011.6050913
Autor:
Su. Basu, Keith M. Groves, C. Bridgwood, Cesar E. Valladares, S. Basu, Charles S. Carrano, E. MacKenzie
Publikováno v:
Radio Science. 45
[1] Satellite communication and navigation systems operating at low latitudes suffer outages due to ionospheric scintillations during large magnetic storms that are not currently specified by any model. This paper describes and demonstrates how in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a818970ee180ad3eefde3d47087e769
https://doi.org/10.1029/2009rs004343
https://doi.org/10.1029/2009rs004343