Latitude variability of acoustic-gravity waves in the upper atmosphere based on satellite data.
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| Title: | Latitude variability of acoustic-gravity waves in the upper atmosphere based on satellite data. |
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| Authors: | Fedorenko, A.1 aurora28@i.ua, Bespalova, A.1 bez.anna@mail.ru, Zhuk, I.1, Kryuchkov, E.1 zhukigor@gmail.com |
| Source: | Geomagnetism & Aeronomy. Jul2017, Vol. 57 Issue 4, p471-481. 11p. |
| Subject Terms: | *Gravity waves, *Sound waves, *Upper atmosphere, *Thermosphere, *Equatorial satellites |
| Abstract: | Based on satellite measurements, we investigated the properties of acoustic-gravity waves in different geographical areas of the Earth's upper atmosphere. To study wave activity at high latitudes, we used the concentration of neutral particles measured by the low-altitude polar satellite Dynamic Explorer 2 and measurements from the equatorial satellite Atmosphere Explorer-E for analysis of waves at low latitudes. In the range of heights 250-400 km, there are observed latitudinal variations of amplitudes, together with variations in the morphological and spectral properties of acoustic-gravity waves. In the polar regions of thermosphere, the wave amplitudes amount to 3-10% in terms of relative variations of density and do not exceed 3% at low and middle latitudes. At low latitudes, regular fluctuations induced by the solar terminator are clearly seen with a predominant wave mode moving synchronously with terminator. Moreover, at low and middle latitudes, there are observed sporadic local wave packets of small amplitudes (1-2%) that can have origins of various natures. We also investigated the relation between some of the observed wave trains and the earthquakes. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 124485089 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Latitude variability of acoustic-gravity waves in the upper atmosphere based on satellite data. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fedorenko%2C+A%2E%22">Fedorenko, A.</searchLink><relatesTo>1</relatesTo><i> aurora28@i.ua</i><br /><searchLink fieldCode="AR" term="%22Bespalova%2C+A%2E%22">Bespalova, A.</searchLink><relatesTo>1</relatesTo><i> bez.anna@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Zhuk%2C+I%2E%22">Zhuk, I.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kryuchkov%2C+E%2E%22">Kryuchkov, E.</searchLink><relatesTo>1</relatesTo><i> zhukigor@gmail.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Geomagnetism+%26+Aeronomy%22">Geomagnetism & Aeronomy</searchLink>. Jul2017, Vol. 57 Issue 4, p471-481. 11p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Gravity+waves%22">Gravity waves</searchLink><br />*<searchLink fieldCode="DE" term="%22Sound+waves%22">Sound waves</searchLink><br />*<searchLink fieldCode="DE" term="%22Upper+atmosphere%22">Upper atmosphere</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermosphere%22">Thermosphere</searchLink><br />*<searchLink fieldCode="DE" term="%22Equatorial+satellites%22">Equatorial satellites</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Based on satellite measurements, we investigated the properties of acoustic-gravity waves in different geographical areas of the Earth's upper atmosphere. To study wave activity at high latitudes, we used the concentration of neutral particles measured by the low-altitude polar satellite Dynamic Explorer 2 and measurements from the equatorial satellite Atmosphere Explorer-E for analysis of waves at low latitudes. In the range of heights 250-400 km, there are observed latitudinal variations of amplitudes, together with variations in the morphological and spectral properties of acoustic-gravity waves. In the polar regions of thermosphere, the wave amplitudes amount to 3-10% in terms of relative variations of density and do not exceed 3% at low and middle latitudes. At low latitudes, regular fluctuations induced by the solar terminator are clearly seen with a predominant wave mode moving synchronously with terminator. Moreover, at low and middle latitudes, there are observed sporadic local wave packets of small amplitudes (1-2%) that can have origins of various natures. We also investigated the relation between some of the observed wave trains and the earthquakes. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1134/S0016793217030057 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 471 Subjects: – SubjectFull: Gravity waves Type: general – SubjectFull: Sound waves Type: general – SubjectFull: Upper atmosphere Type: general – SubjectFull: Thermosphere Type: general – SubjectFull: Equatorial satellites Type: general Titles: – TitleFull: Latitude variability of acoustic-gravity waves in the upper atmosphere based on satellite data. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fedorenko, A. – PersonEntity: Name: NameFull: Bespalova, A. – PersonEntity: Name: NameFull: Zhuk, I. – PersonEntity: Name: NameFull: Kryuchkov, E. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 00167932 Numbering: – Type: volume Value: 57 – Type: issue Value: 4 Titles: – TitleFull: Geomagnetism & Aeronomy Type: main |
| ResultId | 1 |
