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Statements

Subject Item
n2:RIV%2F68378289%3A_____%2F03%3A04033542%21RIV%2F2004%2FAV0%2FA04004%2FN
rdf:type
skos:Concept n18:Vysledek
dcterms:description
The transient planetary waves in the atmosphere and ionosphere seem to occur in the form of bursts of a couple of waves with limited persistence. To study persistence of planetary wave events in the lower ionosphere, data from two radio path from Central Europe are used, Luxenbourgh - Panská Ves (f=6.09MHz, feq=2.1-2.2 MHz) and Deutschlandfunk - Panská Ves (f=1539kHz, feq=650-700 k Hz). The absorption along the former radio paths is formed very predominantly at altitudes of about 90-100 km, whereas the latter absorption is formed mostly at altitudes of about 85-90 km. The persistence of planetary wave type oscillations is studied in the three period bands centred at 5, 10 and 16 days. Waves with period T near 5 days reveal a typical persistence of wave events around 5 cycles. Waves with T = 10 days are less persistent with a typical persistence of 3-4 cycles. The typical persistence of waves T = 16 days is no more than 3 cycles. In terms of number of cycles, the persistence of oscollations evidently d The transient planetary waves in the atmosphere and ionosphere seem to occur in the form of bursts of a couple of waves with limited persistence. To study persistence of planetary wave events in the lower ionosphere, data from two radio path from Central Europe are used, Luxenbourgh - Panská Ves (f=6.09MHz, feq=2.1-2.2 MHz) and Deutschlandfunk - Panská Ves (f=1539kHz, feq=650-700 k Hz). The absorption along the former radio paths is formed very predominantly at altitudes of about 90-100 km, whereas the latter absorption is formed mostly at altitudes of about 85-90 km. The persistence of planetary wave type oscillations is studied in the three period bands centred at 5, 10 and 16 days. Waves with period T near 5 days reveal a typical persistence of wave events around 5 cycles. Waves with T = 10 days are less persistent with a typical persistence of 3-4 cycles. The typical persistence of waves T = 16 days is no more than 3 cycles. In terms of number of cycles, the persistence of oscollations evidently d
dcterms:title
Persistence of the planetary wave in the lower ionosphere. Persistence of the planetary wave in the lower ionosphere.
skos:prefLabel
Persistence of the planetary wave in the lower ionosphere. Persistence of the planetary wave in the lower ionosphere.
skos:notation
RIV/68378289:_____/03:04033542!RIV/2004/AV0/A04004/N
n3:strany
161;172
n3:aktivita
n7:P n7:Z
n3:aktivity
P(OC 271.10), Z(AV0Z3042911)
n3:cisloPeriodika
N/A
n3:dodaniDat
n10:2004
n3:domaciTvurceVysledku
n12:3139808 n12:9492933 n12:7020139
n3:druhVysledku
n9:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
620637
n3:idVysledku
RIV/68378289:_____/03:04033542
n3:jazykVysledku
n13:eng
n3:klicovaSlova
lower ionosphere; planetary waves; persistence
n3:klicoveSlovo
n11:persistence n11:planetary%20waves n11:lower%20ionosphere
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[85D02A7F783E]
n3:nazevZdroje
Studia geophysica et geodaetica
n3:obor
n16:DG
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:projekt
n15:OC%20271.10
n3:rokUplatneniVysledku
n10:2003
n3:svazekPeriodika
47
n3:tvurceVysledku
Laštovička, Jan Novotná, Dagmar Križan, Peter
n3:zamer
n14:AV0Z3042911
s:issn
0039-3169
s:numberOfPages
12