Horizontal velocities and propagation directions of gravity waves in the ionosphere over the Czech Republic

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F10%3A00350501" target="_blank" >RIV/68378289:_____/10:00350501 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Horizontal velocities and propagation directions of gravity waves in the ionosphere over the Czech Republic

Original language description

Using a five-point continuous Doppler sounding system operating at 3.59 MHz we investigate propagation directions and velocities of gravity waves (GWs) at altitudes from 150 to 250 km over the western part of the Czech Republic. The velocities and directions are computed from the time delays between the observations of corresponding GWs at different reflection points that correspond to various sounding paths. We focused on the GWs that produce an S-shaped trace in Doppler shift spectrograms and are observed close to sunrise and sunset. We have selected about 100 of such events. Our results show that the analyzed GWs propagate with typical horizontal velocities from 100 to 200 m/s. The north-south component of GW velocities depends on the season, it isdirected northward in the summer and southward in the winter. At the same time, the north-south component of the neutral winds calculated by the horizontal wind model HWM07 has the opposite sign.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Geophysical Research

ISSN

0148-0227

e-ISSN

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Volume of the periodical

115

Issue of the periodical within the volume

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Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

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UT code for WoS article

000284708300005

EID of the result in the Scopus database

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