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急流异常可能是M>6.0地震的短期前兆

Jet streams anomalies as possible short-term precursors of earthquakes with M>6.0
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摘要 热图像的卫星数据揭示了与地壳断层大线性结构和系统相关的热场的存在。所测量的长波辐射高度正好落在急流区间内。本工作描述了两个区域范围内强震和急流之间可能存在的联系。在2006~2010年强震(M〉6.0)震中附近,气流的前端或尾端位置能在震中附近保持6个小时甚至更久。在一张6小时气象图上有93.6%的几率可以观测到稳定的急流,而在两张邻接的气象图上看到这种变化的几率是26.7%。震中和急流位置分布的中位数为36.5km。能实现预测的累积概率估算值如下:10天为24.2%,20天为48.4%,30天为66.1%,40天为87.1%,50天为93.5%,70天为100%。观测到的前兆效应可能会引起地震实际短临预报应用者的极大兴趣。
出处 《国际地震动态》 2016年第7期12-20,共9页 Recent Developments in World Seismology
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