Mutual Coupling Between Meteorological Parameters and Secondary Microseisms

0420828 - ÚGN 2014 RIV CN eng J - Journal Article
Holub, Karel - Kalenda, Pavel - Rušajová, Jana
Mutual Coupling Between Meteorological Parameters and Secondary Microseisms.
Terrestrial Atmospheric and Oceanic Sciences. Roč. 24, č. 6 (2013), s. 933-949. ISSN 1017-0839. E-ISSN 2311-7680
R&D Projects: GA MŠMT LM2010008
Institutional support: RVO:68145535 ; RVO:67985891
Keywords : secondary microseisms * meteorological elements * statistics
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 1.061, year: 2013
http://tao.cgu.org.tw/pdf/v246p933.pdf

The basic scientific question of this study was: do other mechanisms exist for excitation of secondary microseisms aside from the widely accepted mechanism by non-linear interactions of respective ocean waves. Here we use continuous broad- band data from secondary microseisms recorded at the Ostrava-Krásné Pole, Czech Republic (OKC) seismic station to create a massive seismological database. Except for seismological data, various meteorological features and their mutual relations were analysed: temperature, the so called “shifted” temperature, air density, changes of atmospheric pressure, and synoptic situations. These analyses prove that maximum amplitudes of microseisms were observed during winter, while minimum amplitudes occured in summer months. The annual variations of microseisms amplitudes could not be explained by annual variations of storm activity above the North Atlantic. In addition, current analyses also aim at quantitative and quantitative evaluation of synoptic situations for triggering individual microseismic anomalies.
Permanent Link: http://hdl.handle.net/11104/0227386