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| Titel |
Steady-frequency waves at intradiurnal periods from simultaneous co-located microbarometer and seismometer measurements: a case study |
| VerfasserIn |
G. M. Shved, N. V. Karpova, L. N. Petrova, E. G. Orlov, S. I. Ermolenko |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 29, no. 6 ; Nr. 29, no. 6 (2011-06-29), S.1153-1167 |
| Datensatznummer |
250017050
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| Publikation (Nr.) |
 copernicus.org/angeo-29-1153-2011.pdf |
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| Zusammenfassung |
| Simultaneous co-located microbarometer and
vertical-pendulum seismometer measurements at St. Petersburg (59.9° N,
29.8° E) with total duration of 4 months are used to study atmospheric
oscillations at steady frequencies at periods shorter than 8 h. The temporal
behavior of the phase shift between oscillations detected simultaneously by
both instruments is analyzed for oscillations of periods up to as short as
~0.5 h. Some of oscillations last up to several days. For the 42–90 min
and 2.5–5 h period ranges, the temporal behavior of the
power spectra are considered and correlated with the atmospheric angular
momentum of zonal wind, tropical cyclones and large earthquakes. Signatures
of sequences of subharmonics of the solar tide are revealed with periods up
to day/30. There are indications of effects of the 5-day planetary waves and
tropical cyclones on wave activity in the ~1–5 h period
range. A weak increase of wave activity is observed when large earthquakes
occur. |
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