ATTEMPT TO DETECT COMBINATION TONES BETWEEN THE EARTH'S FREE OSCILLATION AND THE EARTH TIDE
When there are two oscillations in a nonlinear system, new oscillations called combination tones appear. We try to detect combination tones between the earth tides and the earth's free oscillations using the long-period seismograms of the Bolivian great deep earthquake on June 9,1994 recorded b...
Main Authors: | , , , , , |
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Format: | Report |
Language: | English |
Published: |
Faculty of Science, Kanazawa University
1997
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Subjects: | |
Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2839 http://id.nii.ac.jp/1291/00002839/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2839&item_no=1&attribute_id=18&file_no=1 |
Summary: | When there are two oscillations in a nonlinear system, new oscillations called combination tones appear. We try to detect combination tones between the earth tides and the earth's free oscillations using the long-period seismograms of the Bolivian great deep earthquake on June 9,1994 recorded by a broad band seismometer and a superconducting gravimeter installed at Syowa Station in Antarctica. The results suggest that combination tones between the free oscillations and the semidiurnal tide exist. |
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