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| | Abstract | | A linear vibrator, which has more efficiency in lower frequency than rotational one, are tested to examine the linearity and stability of the signal. The linearity and the stability was tested using sinusoidal wave and was appeared to be very good with 5% of over-tone amplitude. The stability was also sufficient, which can be calibrated using source signal. This nature of the vibrator enables us to apply it to the area of small-scale heterogeneity such as volcanoes. |
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