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Your search keyword '"pre-earthquake anomalous phenomena"' showing total 3 results
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3 results on '"pre-earthquake anomalous phenomena"'

1. Determination of Epicenters before Earthquakes Utilizing Far Seismic and GNSS Data: Insights from Ground Vibrations

Author

Chieh-Hung Chen, Li-Ching Lin, Ta-Kang Yeh, Strong Wen, Huaizhong Yu, Chen Yu, Yongxin Gao, Peng Han, Yang-Yi Sun, Jann-Yenq Liu, Cheng-Horng Lin, Chi-Chia Tang, Che-Min Lin, Hung-Hao Hsieh, and Pin-Ji Lu

Subjects
common-mode ground vibrations, pre-earthquake ground motion, pre-earthquake anomalous phenomena, Science
Abstract

Broadband seismometers, ground-based Global Navigation Satellite Systems (GNSS), and magnetometers that were located within an epicentral distance of approximately 150 km consistently observed the novel anomalous behaviors of the common-mode ground vibrations approximately 5–10 days before the M6.6 Meinong earthquake in Taiwan. The common-mode ground vibrations with amplitudes near 0.1 m at frequencies ranging from 8 × 10−5 to 2 × 10−4 Hz were generated near the region close to the epicenter of the impending earthquake. The common-mode vibrations were consistently observed in seismic and GNSS data associated with five other earthquakes in four distinct areas. The results reveal that the common-mode vibrations could be a typical behavior before earthquakes. The causal mechanism of common-mode vibrations can be attributed to crustal resonance excitations before fault dislocations occur. Potential relationships with other pre-earthquake anomalies suggest that the common-mode vibrations could be ground motion before earthquakes, which was investigated for a significant length of time.

Published
2020
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2. Determination of Epicenters before Earthquakes Utilizing Far Seismic and GNSS Data: Insights from Ground Vibrations

Author

Pin Ji Lu, Li Ching Lin, Yang Yi Sun, Chieh-Hung Chen, Che Min Lin, Jann-Yenq Liu, Hung Hao Hsieh, Cheng-Horng Lin, Ta-Kang Yeh, Peng Han, Chi-Chia Tang, Huaizhong Yu, Yongxin Gao, Chen Yu, and Strong Wen

Subjects
Seismometer, pre-earthquake anomalous phenomena, geography, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, Magnetometer, common-mode ground vibrations, Fault (geology), 010502 geochemistry & geophysics, 01 natural sciences, law.invention, Vibration, pre-earthquake ground motion, Amplitude, law, GNSS applications, Epicenter, General Earth and Planetary Sciences, Ground vibrations, lcsh:Q, lcsh:Science, Seismology, Geology, 0105 earth and related environmental sciences
Abstract

Broadband seismometers, ground-based Global Navigation Satellite Systems (GNSS), and magnetometers that were located within an epicentral distance of approximately 150 km consistently observed the novel anomalous behaviors of the common-mode ground vibrations approximately 5–10 days before the M6.6 Meinong earthquake in Taiwan. The common-mode ground vibrations with amplitudes near 0.1 m at frequencies ranging from 8 × 10−5 to 2 × 10−4 Hz were generated near the region close to the epicenter of the impending earthquake. The common-mode vibrations were consistently observed in seismic and GNSS data associated with five other earthquakes in four distinct areas. The results reveal that the common-mode vibrations could be a typical behavior before earthquakes. The causal mechanism of common-mode vibrations can be attributed to crustal resonance excitations before fault dislocations occur. Potential relationships with other pre-earthquake anomalies suggest that the common-mode vibrations could be ground motion before earthquakes, which was investigated for a significant length of time.

Published
2020

3. Determination of Epicenters before Earthquakes Utilizing Far Seismic and GNSS Data: Insights from Ground Vibrations.

Author

Chen, Chieh-Hung, Lin, Li-Ching, Yeh, Ta-Kang, Wen, Strong, Yu, Huaizhong, Yu, Chen, Gao, Yongxin, Han, Peng, Sun, Yang-Yi, Liu, Jann-Yenq, Lin, Cheng-Horng, Tang, Chi-Chia, Lin, Che-Min, Hsieh, Hung-Hao, and Lu, Pin-Ji

Subjects
*SOIL vibration, *GLOBAL Positioning System, *EARTHQUAKES
Abstract

Broadband seismometers, ground-based Global Navigation Satellite Systems (GNSS), and magnetometers that were located within an epicentral distance of approximately 150 km consistently observed the novel anomalous behaviors of the common-mode ground vibrations approximately 5–10 days before the M6.6 Meinong earthquake in Taiwan. The common-mode ground vibrations with amplitudes near 0.1 m at frequencies ranging from 8 × 10−5 to 2 × 10−4 Hz were generated near the region close to the epicenter of the impending earthquake. The common-mode vibrations were consistently observed in seismic and GNSS data associated with five other earthquakes in four distinct areas. The results reveal that the common-mode vibrations could be a typical behavior before earthquakes. The causal mechanism of common-mode vibrations can be attributed to crustal resonance excitations before fault dislocations occur. Potential relationships with other pre-earthquake anomalies suggest that the common-mode vibrations could be ground motion before earthquakes, which was investigated for a significant length of time. [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
View/download PDF

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