Incessant excitation of the Earths free oscillations: global comparison of superconducting gravimeter records
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Nawa, Kazunari; Suda, Naoki; Fukao, Yoshio; Sato, Tadahiro; Tamura, Yoshiaki; Shibuya, Kazuo; McQueen, Herbert; Virtanen, Heikki; Kaariainen, Jussi
Description
Records of superconducting gravimeters (SGs) at Canberra (Australia), Esashi (Japan), Metsahovi (Finland) and Syowa Stations (Antarctica) were analyzed to search for further evidence of background free oscillations of the Earth. Spectrograms for 1-year period and averaged power spectra for seismically quiet periods were obtained for each of the stations. Anomalous features of the oscillations observed at Syowa Station, such as an apparent seasonal variation and a high intensity at frequencies...[Show more]
Collections | ANU Research Publications |
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Date published: | 2000 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/90072 |
Source: | Physics of the Earth and Planetary Interiors |
DOI: | 10.1016/S0031-9201(00)00158-8 |
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01_Nawa_Incessant_excitation_of_the_2000.pdf | 1.09 MB | Adobe PDF | Request a copy |
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