Long-period fluctuations in ionospheric absorption and their relation with planetary activity in the stratosphere |
| |
| Authors: | D Pancheva G Nestorov B De la Morena Josef Boška Reviewer J Laštovička |
| |
| Institution: | (1) Geophysical Institute, Bulg. Acad. Sci., Bulgaria;(2) Atmospheric Sounding Station „El Arenosillo”, Spain;(3) Geophysical Institute, Czechoslo. Acad. Sci., Prague |
| |
| Abstract: | Summary By investigating the quasi-regular variations in ionospheric absorption along three distant radio paths with approximately
one and the same equivalent frequency during the winters 1983/84 and 1984/85, an attempt is made to study the stratospheric-mesospheric
relations at typical geographic mid latitudes. It is shown that the quasi-regular oscillations of ionospheric absorption,
investigated in this paper, reach maximum development in each time series at one and the same time. This means, that if they
are provoked by an external source when it starts acting, a spectrum of frequencies is generated rather than a definite fixed
frequency. By studying the variation of the instantaneous amplitudes of the quasi-regular oscillations in ionospheric absorption
with time, their connection with the amplification of the quasi-stationary planetary waves in the stratosphere with a zonal
wave number 2 during the winter periods under investigation is shown.
Резюме Иссле?rt;овaнuем квaзuре
 улярных вaрuaцuŭ в uоносферном nо
 лощенuu в mрех nросmрaнсmвенно оm?rt;aленных рa?rt;uо-mрaссaх с nрuблuзumельно о?rt;ноŭ u mоŭ же эквuвaленmноŭ чaсmовоŭ зuмоŭ
1983/84 u 1984/85
 . ?rt;елaеmся nоnыmкa uзучumь сmрamосферно-мезос ферные связu в munuчных сре?rt;ных щuроmaх. Покaзaно, чmо рaссмоmренные в
рaбоmе квaзuре
 улярные колебaнuя в uоносферном nо
 лощенuu ?rt;осmu
 aюm мaксuмaльно
 о рaзвumuя в кaж?rt;ом временном ря?rt;у в о?rt;но u mо же время. Эmо ознaчaеm, чmо, еслu онu возбуж?rt;ены внещнuм uсmочнuком,
mо nрu е
 о включенuu
 енерuруюmся не о?rt;нa чaсmоma, a целыŭ сnекmр чaсmоm. Изученuем временных uзмененuŭ м
 новенных aмnлumу?rt; квaзuре
 улярных колебaнuŭ в uоносфермон nо
 лощенuu зa uссле?rt;овaнные зuмнuе nерuо?rt;ы nокaзaнa uх связь с квaзu-сmaцuонaрнымu nлaнеmaрнымu колебaнuямu в сmрamосфере
с зонaльным волновымu чuслом 2.
|
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
