Matches in SemOpenAlex for { <https://semopenalex.org/work/W2038447905> ?p ?o ?g. }
Showing items 1 to 81 of
81
with 100 items per page.
- W2038447905 endingPage "n/a" @default.
- W2038447905 startingPage "n/a" @default.
- W2038447905 abstract "[1] Observed phases and amplitudes of VLF radio signals propagating on (near) tropical all-sea paths, both short, ∼300 km, and long, ∼10 Mm, are used to find daytime parameter changes for the lowest edge of the (D-region of the) Earth's ionosphere as the solar cycle advanced from a very low sunspot number of ∼5 up to ∼60, in the period 2009–2011. The VLF phases, relative to GPS 1-s pulses, and amplitudes were measured ∼100 km from the transmitter, where the direct ground wave is very dominant, ∼300 km from the transmitter, near where the ionospherically reflected waves form a (modal) minimum with the ground wave, and ∼10 Mm away where the lowest order waveguide mode is fully dominant. Most of the signals came from the 19.8 kHz, 1-MW transmitter, NWC, North West Cape, Australia, propagating ENE, mainly over the sea, to the vicinity of Karratha and Dampier on the NW coast of Australia and then on to Kauai, Hawaii, ∼10.6 Mm from NWC. Observations from the 8.1-Mm path NPM (21.4 kHz, Hawaii) to Dunedin, NZ, are also used. The sunspot number increase from ∼5 to ∼60 was found to coincide with a decrease in the height,H′, of the midday tropical ionosphere by 0.75 ± 0.25 km (from H′ ≈ 70.5 km to H′ ≈ 69.7 km) while the sharpness, β increased by 0.025 ± 0.01 km−1 (from β ≈ 0.47 km−1 to β ≈ 0.49 km−1) where H′ and βare the traditional height and sharpness parameters used by Wait and by the U.S. Navy in their Earth-ionosphere VLF radio waveguide programs." @default.
- W2038447905 created "2016-06-24" @default.
- W2038447905 creator A5008520842 @default.
- W2038447905 creator A5026573146 @default.
- W2038447905 creator A5075802681 @default.
- W2038447905 date "2012-10-01" @default.
- W2038447905 modified "2023-10-16" @default.
- W2038447905 title "Tropical daytime lower D-region dependence on sunspot number" @default.
- W2038447905 cites W1518222438 @default.
- W2038447905 cites W1640593231 @default.
- W2038447905 cites W1964562723 @default.
- W2038447905 cites W1978040133 @default.
- W2038447905 cites W2012035555 @default.
- W2038447905 cites W2018328868 @default.
- W2038447905 cites W2033593649 @default.
- W2038447905 cites W2038802956 @default.
- W2038447905 cites W2043443863 @default.
- W2038447905 cites W2056421104 @default.
- W2038447905 cites W2064107625 @default.
- W2038447905 cites W2071531821 @default.
- W2038447905 cites W2072952817 @default.
- W2038447905 cites W2102840608 @default.
- W2038447905 cites W2162177732 @default.
- W2038447905 cites W2790456167 @default.
- W2038447905 doi "https://doi.org/10.1029/2012ja018077" @default.
- W2038447905 hasPublicationYear "2012" @default.
- W2038447905 type Work @default.
- W2038447905 sameAs 2038447905 @default.
- W2038447905 citedByCount "5" @default.
- W2038447905 countsByYear W20384479052014 @default.
- W2038447905 countsByYear W20384479052017 @default.
- W2038447905 countsByYear W20384479052018 @default.
- W2038447905 countsByYear W20384479052019 @default.
- W2038447905 countsByYear W20384479052021 @default.
- W2038447905 crossrefType "journal-article" @default.
- W2038447905 hasAuthorship W2038447905A5008520842 @default.
- W2038447905 hasAuthorship W2038447905A5026573146 @default.
- W2038447905 hasAuthorship W2038447905A5075802681 @default.
- W2038447905 hasBestOaLocation W20384479052 @default.
- W2038447905 hasConcept C115260700 @default.
- W2038447905 hasConcept C121332964 @default.
- W2038447905 hasConcept C127313418 @default.
- W2038447905 hasConcept C153294291 @default.
- W2038447905 hasConcept C162725370 @default.
- W2038447905 hasConcept C197370839 @default.
- W2038447905 hasConcept C39432304 @default.
- W2038447905 hasConcept C49204034 @default.
- W2038447905 hasConcept C62520636 @default.
- W2038447905 hasConcept C91586092 @default.
- W2038447905 hasConceptScore W2038447905C115260700 @default.
- W2038447905 hasConceptScore W2038447905C121332964 @default.
- W2038447905 hasConceptScore W2038447905C127313418 @default.
- W2038447905 hasConceptScore W2038447905C153294291 @default.
- W2038447905 hasConceptScore W2038447905C162725370 @default.
- W2038447905 hasConceptScore W2038447905C197370839 @default.
- W2038447905 hasConceptScore W2038447905C39432304 @default.
- W2038447905 hasConceptScore W2038447905C49204034 @default.
- W2038447905 hasConceptScore W2038447905C62520636 @default.
- W2038447905 hasConceptScore W2038447905C91586092 @default.
- W2038447905 hasIssue "A10" @default.
- W2038447905 hasLocation W20384479051 @default.
- W2038447905 hasLocation W20384479052 @default.
- W2038447905 hasOpenAccess W2038447905 @default.
- W2038447905 hasPrimaryLocation W20384479051 @default.
- W2038447905 hasRelatedWork W1979915631 @default.
- W2038447905 hasRelatedWork W2031669459 @default.
- W2038447905 hasRelatedWork W2040935807 @default.
- W2038447905 hasRelatedWork W2350413991 @default.
- W2038447905 hasRelatedWork W2359063307 @default.
- W2038447905 hasRelatedWork W2556151303 @default.
- W2038447905 hasRelatedWork W2793201502 @default.
- W2038447905 hasRelatedWork W2884825856 @default.
- W2038447905 hasRelatedWork W3095239250 @default.
- W2038447905 hasRelatedWork W3136780051 @default.
- W2038447905 hasVolume "117" @default.
- W2038447905 isParatext "false" @default.
- W2038447905 isRetracted "false" @default.
- W2038447905 magId "2038447905" @default.
- W2038447905 workType "article" @default.