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  1. Article

    Open Access

    Large air pressure changes triggered by P-SV ground motion in a cave in northern Taiwan

    Acoustic-gravity waves are generally considered to be one of the major factors that drive changes of the total electron content in the ionosphere. However, causal mechanisms of couplings between sources in the...

    Chieh-Hung Chen, Yang-Yi Sun, Li-Ching Lin, Peng Han, Huai-Zhong Yu… in Scientific Reports (2021)

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  2. No Access

    Article

    Development of a Combination Approach for Seismic Hazard Evaluation

    We developed a synth esis approach to augment current techniques for seismic hazard evaluation by combining four previously unrelated subjects: the pattern informatics (PI), load/unload response ratio (LURR), ...

    Huai-zhong Yu, Fa-ren Zhou, Qing-yong Zhu, **ao-tao Zhang… in Pure and Applied Geophysics (2016)

  3. No Access

    Article

    The Sensitivity of the Loa/Unload Response Ratio and Critical Region Selection Before Large Earthquakes

    Occurrence of a large earthquake could be predicted by anomalous temporal increase of the Load/Unload Response Ratio (LURR). Previous studies have indicated that the stress field that existed before a large ea...

    Huai-zhong Yu, Faren Zhou, Jia Cheng, Yong-ge Wan… in Pure and Applied Geophysics (2015)

  4. No Access

    Article

    Multi-Methods Combined Analysis of Future Earthquake Potential

    Prior to an earthquake, natural seismicity is correlated across multiple spatial and temporal scales. Many studies have indicated that an earthquake is hard to accurately predict by a single time-dependent pre...

    Huai-zhong Yu, Jia Cheng, **ao-tao Zhang, Lang-** Zhang… in Pure and Applied Geophysics (2013)

  5. No Access

    Article

    Failure Potential Evaluation in Engineering Experiments Using Load/Unload Response Ratio Method

    The Load/Unload Response Ratio (LURR) method is proposed for prediction of the failure of brittle heterogeneous materials. Application of the method typically involves evaluating the external load on materials...

    Lang-** Zhang, Huai-zhong Yu, **ang-chu Yin in Pure and Applied Geophysics (2013)

  6. No Access

    Article

    Critical sensitivity of load/unload response ratio and stress accumulation before large earthquakes: example of the 2008 Mw7.9 Wenchuan earthquake

    The Load/Unload Response Ratio (LURR) method is often defined as the ratio between Benioff strains released during the time periods of loading and unloading, corresponding to earth tide induced Coulomb Failure...

    Huai-zhong Yu, Jia Cheng, Qing-yong Zhu, Yong-ge Wan in Natural Hazards (2011)

  7. No Access

    Article

    State Vector: A New Approach to Prediction of the Failure of Brittle Heterogeneous Media and Large Earthquakes

    The concept of state vector stems from statistical physics, where it is usually used to describe activity patterns of a physical field in its manner of coarsegrain. In this paper, we propose an approach by whi...

    Huai-zhong Yu, **ang-chu Yin, Qing-yong Zhu, Yu-ding Yan in pure and applied geophysics (2006)

  8. No Access

    Article

    Acoustic Emission Experiments of Rock Failure Under Load Simulating the Hypocenter Condition

    A series of acoustic emission (AE) experiments of rock failure have been conducted under cyclic load in tri-axial stress tests. To simulate the hypocenter condition the specimens are loaded by the combined act...

    Hui-hui Zhang, **ang-chu Yin, Nai-gang Liang, Huai-zhong Yu… in pure and applied geophysics (2006)

  9. No Access

    Article

    Load-Unload Response Ratio (LURR), Accelerating Moment/Energy Release (AM/ER) and State Vector Saltation as Precursors to Failure of Rock Specimens

    — In order to verify some precursors such as LURR (Load/Unload Response Ratio) and AER (Accelerating Energy Release) before large earthquakes or macro-fracture in heterogeneous brittle media, four acoustic em...

    **ang-Chu Yin, Huai-Zhong Yu, Victor Kukshenko, Zhao-Yong Xu… in pure and applied geophysics (2004)

  10. No Access

    Article

    Experimental research on critical point hypothesis

    According to the critical point hypothesis (CPH), energy release would accelerate in power law before occurrence of large earthquakes or failure of brittle materials. In the paper, CPH was studied by acoustic ...

    Huai-zhong Yu, **ang-chu Yin, Meng-fen **a, Zhao-yong Xu… in Acta Seismologica Sinica (2004)