Výsledky vyhledávání - "Peter J. Sultan"

Validation of In Situ Ionospheric Density Measurements with Ground-Based Radar

Autor: Frederick J. Rich, Peter J. Sultan

Publikováno v: Journal of Spacecraft and Rockets. 38:590-593

TheinsitusensorsaboardspacecraftoftheDefenseMeteorologicalSatelliteProgram routinely measuretop-side ionospheric ion densities near 840 km. This report presents data that demonstrate that the satellite ion density measurements are accurate. This veri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e2b00b12636d1f2e96a8101d1961d298
https://doi.org/10.2514/2.3721

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DMSP observations of equatorial plasma bubbles in the topside ionosphere near solar maximum

Autor: Cheryl Y. Huang, L. C. Gentile, William J. Burke, J. S. Machuzak, Peter J. Sultan

Publikováno v: Journal of Geophysical Research: Space Physics. 106:8131-8142

The Defense Meteorological Satellite Program (DMSP) flights F9 and F10 crossed postsunset local time sectors approximately 14 times per day in Sun-synchronous orbits at an altitude of ∼840 km. We have examined a large database of postsunset plasma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::343d0d3f71edf375298deb9e49bc6d5a
https://doi.org/10.1029/2000ja000319

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Intercomparisons of total electron content measurements using the Arecibo Incoherent Scatter Radar and GPS

Autor: Sixto A. González, Peter J. Sultan, B. MacPherson, Jonathan J. Makela, Michael C. Kelley, Xiaoqing Pi

Publikováno v: Geophysical Research Letters. 27:2841-2844

We compare total electron content measurements made using the Arecibo Incoherent Scatter Radar (ISR) with those made using the Global Positioning System (GPS). The ISR measurements have a limited range for these observations, up to 1500 km. We extend

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::403a10d203373b6d4f31260384271630
https://doi.org/10.1029/2000gl000023

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Comparison of ion densities measured in the topside ionosphere at low latitudes and midlatitudes with calculations of ionospheric models over a full solar cycle

Autor: Frederick J. Rich, Peter J. Sultan

Publikováno v: Radio Science. 35:1193-1204

Measurements of total ion density at 840 km altitude at all latitudes in four local time sectors are available from 1987 to the present from spacecraft of the Defense Meteorological Satellite Program (DMSP). Thus all phases of the past solar cycle ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5bb1f1770b4173e282be7d4297362860
https://doi.org/10.1029/1999rs002284

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Ionospheric disturbances observed by DMSP at middle to low latitudes during the magnetic storm of June 4-6, 1991

Autor: Cheryl Y. Huang, N. C. Maynard, Gordon R. Wilson, Allen G. Rubin, William J. Burke, Peter J. Sultan, O. de la Beaujardiere, L. C. Gentile, Frederick J. Rich

Publikováno v: Journal of Geophysical Research: Space Physics. 105:18391-18405

This paper extends a recent study of electric field penetration into the inner magnetosphere observed by the Combined Release and Radiation Effects (CRRES) satellite and the Defense Meteorological Satellite Program (DMSP) satellite F8 during the magn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5b1fb8382bc53967e25919078605871
https://doi.org/10.1029/1999ja000188

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Observations and modeling of the coupled latitude-altitude patterns of equatorial plasma depletions

Autor: Yogeshwar Sahai, Michael Mendillo, R. A. Doe, Eftyhia Zesta, Jeffrey Baumgardner, Peter J. Sultan, Sheela Shodhan

Publikováno v: Journal of Geophysical Research: Space Physics. 110

[1] The equatorial ionosphere is host to the most dramatic and enigmatic plasma instability mechanism in the geospace environment. Equatorial spread F (ESF) was discovered in early ionosonde measurements and interpreted theoretically using Rayleigh-T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd6c773d51b869d9c28102e5055a5510
https://doi.org/10.1029/2005ja011157

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The 27-day variations of plasma densities and temperatures in the topside ionosphere

Autor: William J. Burke, Peter J. Sultan, Frederick J. Rich

Publikováno v: Journal of Geophysical Research. 108

[1] Defense Meteorological Satellite Program (DMSP) spacecraft at 840 km observe a 27-day variation in plasma density and temperature at all subauroral latitudes. At the peak of the solar cycle, evening-sector variations are ∼40–50% in plasma den

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::de98eb3ae93ab43ae6868f7b6c0f58ad
https://doi.org/10.1029/2002ja009731

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