FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3025484639> ?p ?o ?g. }

• W3025484639 endingPage "22" @default.
• W3025484639 startingPage "22" @default.
• W3025484639 abstract "The ionospheric electron population is divided into two groups. The ambient electrons are thermalized. Their energy is usually smaller than one electron volt. Their densities and temperatures are the usual ones measured by incoherent scatter radars, or modeled by international codes such as International Reference Ionosphere (IRI). There is however a second population called the suprathermal electrons. This one is either due to photoionization or to electron impact between the thermosphere and the precipitation in the high latitude zone. In the frame of space weather, it may be the source of scintillations, plasma bulks and other physical phenomena. The suprathermal electron population can only indirectly be measured through the plasmaline and had never been modeled. Its modeling requires the computation of the electron stationary flux by solving the Boltzmann transport equation. This flux is multiplied by various powers of the velocity v and integrated to obtain the different order moments. By integrating f over v 0 d v , one deduces the suprathermal electron density. An integration of v 1 f d v allows the computation of their mean velocity. Higher moments give access to their temperature and finally to their heat flux. In this work, we demonstrate for the first time the full and rigorous calculation of the ionospheric electron moments up to three. As two case studies, we focus on high latitude in the auroral oval and low magnetic latitude over Algiers for different solar and geophysical conditions. We compare the suprathermal densities and temperatures to the thermal electron parameters. Our results highlight that – as expected – the suprathermal density is small compared to the thermal one. Although it is close to 3 × 10 3 m −3 at 180 km during the day, it drops drastically at night, to hardly reach 3 m −3 . Contrarily to the density, the velocity is about 10 times more important during the nighttime when precipitation occurs than during the daytime under the electromagnetic solar flux. At 400 km, it varies during the day between 700,000 m s −1 (active solar conditions) and 900,000 m s −1 (quiet Sun). At night, the velocity varies between 3 × 10 6 m s −1 (low mean energy precipitation) and 3 × 10 7 m s −1 (high mean energy precipitation) at 400 km. The suprathermal temperature increases as the solar activity decreases or as the mean energy of the electron precipitation increases. It may reach values close to 3 × 10 8 K. The heat flux may be fully oriented downward or experiences a reversal with some flux going up depending on the forcing." @default.
• W3025484639 created "2020-05-21" @default.
• W3025484639 creator A5036802896 @default.
• W3025484639 creator A5083192695 @default.
• W3025484639 date "2020-01-01" @default.
• W3025484639 modified "2023-10-18" @default.
• W3025484639 title "Suprathermal electron moments in the ionosphere" @default.
• W3025484639 cites W1964073316 @default.
• W3025484639 cites W1973900951 @default.
• W3025484639 cites W1979477093 @default.
• W3025484639 cites W1982355756 @default.
• W3025484639 cites W1993906271 @default.
• W3025484639 cites W2005737353 @default.
• W3025484639 cites W2006406420 @default.
• W3025484639 cites W2008635316 @default.
• W3025484639 cites W2016381224 @default.
• W3025484639 cites W2023276891 @default.
• W3025484639 cites W2038275744 @default.
• W3025484639 cites W2045477991 @default.
• W3025484639 cites W2054823429 @default.
• W3025484639 cites W2057476757 @default.
• W3025484639 cites W2061030442 @default.
• W3025484639 cites W2070259289 @default.
• W3025484639 cites W2076312686 @default.
• W3025484639 cites W2105827718 @default.
• W3025484639 cites W2124083531 @default.
• W3025484639 cites W2129867749 @default.
• W3025484639 cites W2140681854 @default.
• W3025484639 cites W2888480818 @default.
• W3025484639 cites W2896534156 @default.
• W3025484639 cites W4256446451 @default.
• W3025484639 cites W4301244162 @default.
• W3025484639 cites W8149827 @default.
• W3025484639 doi "https://doi.org/10.1051/swsc/2020021" @default.
• W3025484639 hasPublicationYear "2020" @default.
• W3025484639 type Work @default.
• W3025484639 sameAs 3025484639 @default.
• W3025484639 citedByCount "2" @default.
• W3025484639 countsByYear W30254846392022 @default.
• W3025484639 crossrefType "journal-article" @default.
• W3025484639 hasAuthorship W3025484639A5036802896 @default.
• W3025484639 hasAuthorship W3025484639A5083192695 @default.
• W3025484639 hasBestOaLocation W30254846391 @default.
• W3025484639 hasConcept C116403925 @default.
• W3025484639 hasConcept C121332964 @default.
• W3025484639 hasConcept C131980223 @default.
• W3025484639 hasConcept C144024400 @default.
• W3025484639 hasConcept C147120987 @default.
• W3025484639 hasConcept C149923435 @default.
• W3025484639 hasConcept C184779094 @default.
• W3025484639 hasConcept C191897082 @default.
• W3025484639 hasConcept C192562407 @default.
• W3025484639 hasConcept C22175881 @default.
• W3025484639 hasConcept C2908647359 @default.
• W3025484639 hasConcept C30475298 @default.
• W3025484639 hasConcept C35777598 @default.
• W3025484639 hasConcept C62520636 @default.
• W3025484639 hasConcept C68709404 @default.
• W3025484639 hasConcept C8058405 @default.
• W3025484639 hasConceptScore W3025484639C116403925 @default.
• W3025484639 hasConceptScore W3025484639C121332964 @default.
• W3025484639 hasConceptScore W3025484639C131980223 @default.
• W3025484639 hasConceptScore W3025484639C144024400 @default.
• W3025484639 hasConceptScore W3025484639C147120987 @default.
• W3025484639 hasConceptScore W3025484639C149923435 @default.
• W3025484639 hasConceptScore W3025484639C184779094 @default.
• W3025484639 hasConceptScore W3025484639C191897082 @default.
• W3025484639 hasConceptScore W3025484639C192562407 @default.
• W3025484639 hasConceptScore W3025484639C22175881 @default.
• W3025484639 hasConceptScore W3025484639C2908647359 @default.
• W3025484639 hasConceptScore W3025484639C30475298 @default.
• W3025484639 hasConceptScore W3025484639C35777598 @default.
• W3025484639 hasConceptScore W3025484639C62520636 @default.
• W3025484639 hasConceptScore W3025484639C68709404 @default.
• W3025484639 hasConceptScore W3025484639C8058405 @default.
• W3025484639 hasLocation W30254846391 @default.
• W3025484639 hasLocation W30254846392 @default.
• W3025484639 hasLocation W30254846393 @default.
• W3025484639 hasLocation W30254846394 @default.
• W3025484639 hasLocation W30254846395 @default.
• W3025484639 hasOpenAccess W3025484639 @default.
• W3025484639 hasPrimaryLocation W30254846391 @default.
• W3025484639 hasRelatedWork W1973447199 @default.
• W3025484639 hasRelatedWork W1989874578 @default.
• W3025484639 hasRelatedWork W2005737353 @default.
• W3025484639 hasRelatedWork W2011641321 @default.
• W3025484639 hasRelatedWork W2015052435 @default.
• W3025484639 hasRelatedWork W2030740633 @default.
• W3025484639 hasRelatedWork W2083356292 @default.
• W3025484639 hasRelatedWork W2374025318 @default.
• W3025484639 hasRelatedWork W2910734289 @default.
• W3025484639 hasRelatedWork W4245470887 @default.
• W3025484639 hasVolume "10" @default.
• W3025484639 isParatext "false" @default.
• W3025484639 isRetracted "false" @default.
• W3025484639 magId "3025484639" @default.
• W3025484639 workType "article" @default.