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...

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Bibliographic Details
Main Authors: タナカ トシユキ, フルモト ムネヨシ, ナワ カズナリ, Toshiyuki TANAKA, Muneyoshi FURUMOTO, Kazunari NAWA
Format: Report
Language:English
Published: Faculty of Science, Kanazawa University 1997
Subjects:
nonlinear elasticity
the earth's free oscillation
the earth tide
combination tone
Syowa Station
Antarc*
Antarctica
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
Description
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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