Matches in SemOpenAlex for { <https://semopenalex.org/work/W2093961888> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W2093961888 endingPage "4386" @default.
- W2093961888 startingPage "4379" @default.
- W2093961888 abstract "The VHF radar at Jicamarca (12.0°S, 76.9°W) was used to probe the mesosphere for 24 hours on May 23–24, 1974. The inferred zonal wind shows a strong eastward prevailing component below 75 km for these winter conditions, as would be expected from the annual and semiannual oscillations. The zonal winds are in good agreement in their region of overlap with rocket observations made at Ascension Island (8.0°S, 14.4°W) for the same period. This is the first direct confirmation that Jicamarca VHF observations are measuring mesospheric winds. Substantial wind oscillations are present, but the lack of nighttime echoes precludes a decomposition into tidal components. The dominant periodicity in the short-period oscillations changes with altitude, with the short-period cutoff decreasing from around 10 min at 70 km to 4 min at 80 km. This suggests both a local energy source for the oscillations and the importance of the background temperature structure in determining the wave characteristics. The variation of echo power with height in the two antennas that were used shows that 2–10 times more power was received on the average in the nearly vertical antenna than in the antenna offset from the vertical by 3.45° at heights below 75 km, suggesting the possibility that a ‘partial reflection’ mechanism is important in the 55- to 75-km region at a 50-MHz operating frequency. The powers in the two antennas become nearly equal above 75 km, with the possibility that slightly more power is received in the off-vertical antenna. The continuous scattered power becomes very small above 80 km; however, meteor echoes are frequently observed. Equatorial electrojet echoes dominate the echo returns above 85 km." @default.
- W2093961888 created "2016-06-24" @default.
- W2093961888 creator A5027410727 @default.
- W2093961888 creator A5054292506 @default.
- W2093961888 creator A5059291244 @default.
- W2093961888 creator A5065801193 @default.
- W2093961888 creator A5082932285 @default.
- W2093961888 creator A5091260234 @default.
- W2093961888 date "1979-08-01" @default.
- W2093961888 modified "2023-09-26" @default.
- W2093961888 title "Mesospheric winds and waves over Jicamarca on May 23-24, 1974" @default.
- W2093961888 cites W1966381805 @default.
- W2093961888 cites W1968508389 @default.
- W2093961888 cites W1985776674 @default.
- W2093961888 cites W2007197570 @default.
- W2093961888 cites W2014011255 @default.
- W2093961888 cites W2015803208 @default.
- W2093961888 cites W2043449267 @default.
- W2093961888 cites W2049974036 @default.
- W2093961888 cites W2056116438 @default.
- W2093961888 cites W2056783621 @default.
- W2093961888 cites W2064692645 @default.
- W2093961888 cites W2066227689 @default.
- W2093961888 cites W2087035786 @default.
- W2093961888 cites W2091256519 @default.
- W2093961888 cites W2092214521 @default.
- W2093961888 cites W2123581897 @default.
- W2093961888 doi "https://doi.org/10.1029/ja084ia08p04379" @default.
- W2093961888 hasPublicationYear "1979" @default.
- W2093961888 type Work @default.
- W2093961888 sameAs 2093961888 @default.
- W2093961888 citedByCount "80" @default.
- W2093961888 countsByYear W20939618882013 @default.
- W2093961888 countsByYear W20939618882014 @default.
- W2093961888 countsByYear W20939618882022 @default.
- W2093961888 crossrefType "journal-article" @default.
- W2093961888 hasAuthorship W2093961888A5027410727 @default.
- W2093961888 hasAuthorship W2093961888A5054292506 @default.
- W2093961888 hasAuthorship W2093961888A5059291244 @default.
- W2093961888 hasAuthorship W2093961888A5065801193 @default.
- W2093961888 hasAuthorship W2093961888A5082932285 @default.
- W2093961888 hasAuthorship W2093961888A5091260234 @default.
- W2093961888 hasConcept C120665830 @default.
- W2093961888 hasConcept C121332964 @default.
- W2093961888 hasConcept C127313418 @default.
- W2093961888 hasConcept C153294291 @default.
- W2093961888 hasConcept C177707082 @default.
- W2093961888 hasConcept C185975314 @default.
- W2093961888 hasConcept C39432304 @default.
- W2093961888 hasConcept C44886760 @default.
- W2093961888 hasConcept C49204034 @default.
- W2093961888 hasConcept C8058405 @default.
- W2093961888 hasConcept C91586092 @default.
- W2093961888 hasConceptScore W2093961888C120665830 @default.
- W2093961888 hasConceptScore W2093961888C121332964 @default.
- W2093961888 hasConceptScore W2093961888C127313418 @default.
- W2093961888 hasConceptScore W2093961888C153294291 @default.
- W2093961888 hasConceptScore W2093961888C177707082 @default.
- W2093961888 hasConceptScore W2093961888C185975314 @default.
- W2093961888 hasConceptScore W2093961888C39432304 @default.
- W2093961888 hasConceptScore W2093961888C44886760 @default.
- W2093961888 hasConceptScore W2093961888C49204034 @default.
- W2093961888 hasConceptScore W2093961888C8058405 @default.
- W2093961888 hasConceptScore W2093961888C91586092 @default.
- W2093961888 hasIssue "A8" @default.
- W2093961888 hasLocation W20939618881 @default.
- W2093961888 hasOpenAccess W2093961888 @default.
- W2093961888 hasPrimaryLocation W20939618881 @default.
- W2093961888 hasRelatedWork W2004301078 @default.
- W2093961888 hasRelatedWork W2011150082 @default.
- W2093961888 hasRelatedWork W2013998943 @default.
- W2093961888 hasRelatedWork W2015542930 @default.
- W2093961888 hasRelatedWork W2039037256 @default.
- W2093961888 hasRelatedWork W2268018075 @default.
- W2093961888 hasRelatedWork W2585012156 @default.
- W2093961888 hasRelatedWork W3095363165 @default.
- W2093961888 hasRelatedWork W830679865 @default.
- W2093961888 hasRelatedWork W2339375141 @default.
- W2093961888 hasVolume "84" @default.
- W2093961888 isParatext "false" @default.
- W2093961888 isRetracted "false" @default.
- W2093961888 magId "2093961888" @default.
- W2093961888 workType "article" @default.