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A novel rotational seismometer demonstrates high sensitivity in measuring deep earth movements, suggesting advancements in geophysical studies.
We developed a high-performance three-component fiber optic rotational seismometer with outstanding sensitivity, achieving a self-noise of 6.2×10 −9 rad/s/Hz, a random walk of 5 × 10 − 9 rad/s 1 / 2 , and a bias instability of 4 × 10 − 10 rad/s.
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Zhu et al. (2025) studied this question.
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