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1.
应用地磁加卸载响应比方法,统计分析山西地磁台网1987—1998年模拟资料、2008年以来数字化资料的加卸载响应比异常及与其周围Ms4.0以上地震之间的关系。提出适用于山西地区地磁加卸载响应比的异常判据阈值为3.0,得出地磁加卸载响应比异常的短临指标。  相似文献   

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应用地磁加卸载响应比方法,研究分析辽宁地区2008—2010年观测资料的加卸载响应比异常与邻区M_L4.0以上地震之间的关系,提出适用于辽宁地区地震分析预报参数。  相似文献   

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应用曾小苹等人提出的地磁加卸载响应比方法,研究分析了广平地震台1982-2006年地磁资料加卸载响应比与河北省及邻近地区Ms≥5.0地震之间的关系,初步提出了适用于广平地震台地磁加卸载响应比异常映震的定量指标,为广平地震台今后以磁报震提供了依据。  相似文献   

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应用加卸载响应比法、日变幅逐日比法及空间相关分析法,分析研究了江苏高邮地磁台1992年至1997年地磁垂直分量的观测资料,结果发现,在中强地震前高邮台的地磁场存在明显的磁异常变化。提出了适用于高邮台的地震分析预报参数。  相似文献   

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选取广东省数字化地磁观测以来的地磁资料和一定震中距的显著地震事件,计算地震前1~2年的地磁垂直分量加卸载响应比,结果显示,显著地震前1个月至1年不等,地磁加卸载响应比值有明显超经验阈值2.8的现象。  相似文献   

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地磁预报地震的方法越来越多,本文应用加卸载响应比方法,分析山西地区2009—2016年观测的加卸载响应比与山西地区4.0级地震之间的对应关系,初步给出适用于山西地区震例特征的磁异常判别指标。  相似文献   

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应用地磁加卸载响应比方法,研究分析了辽宁地区2008—20l5年观测资料的加卸载响应比异常与辽宁地区M 4.0以上地震之间的对应关系,提出适用于辽宁地区地磁异常定量指标的参数。  相似文献   

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应用地磁加卸载响应比方法,分析东北地区地磁观测台站2008-2017年地磁Z分量日变幅加卸载响应比异常高值,结合东北地区M5.0级以上地震震例资料,分析得出加卸载响应比出现异常高值对东北地区短期内发生M5.0级以上地震有效好的指示性意义。  相似文献   

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2018年9月12日19时6分在陕西省宁强县(32.75°N,105.69°E)发生MS5.3地震,震源深度11km。以宁强县及其周边420km为研究区域,使用地磁垂直分量Z加卸载响应比的方法,对陕—川—甘地区的汉中、周至楼、乾陵、泾阳、成都、天水和兰州七个地磁台站的资料进行处理分析,发现加卸载响应比P(Z)的高值异常与此次宁强县地震有较好的对应,为今后中短期预报提供一定的依据,也进一步推广和检验了地磁加卸载响应比在地震预报方面的应用。  相似文献   

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应用地磁加卸载响应比方法对甘肃及周边地区2008—2014年地磁垂直分量Z的资料进行处理,结合实际震例分析,初步给出了适用于甘肃地区的地震分析预报异常形态特征的磁异常判别指标。  相似文献   

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Foreword     
Destructive earthquakes have caused great damage in China and the United States and collapsing buildings havecaused many deaths and injuries. The field of earthquake engineering studies earthquake hazards, the occurrence ofearthquakes of various magnitudes, the nature of the ground shaking during an earthquake, the vibration of structuresduring earthquakes, the strengthening of existing structures and the design of new structures to be earthquake resistant,and finally, how to cope with earthquake damage and restore a city to normal functioning. Such efforts are in progressin both countries, but unfortunately, the language barrier interferes with the free flow of information between China andthe Untied States. It would be mutually beneficial if some means could be developed to promote the exchangeof information across the Pacific Ocean. This new journal has been established for this purpose and its success willbe an important step in promoting earthquake engineering in China and the United States.  相似文献   

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A procedure for short-term rainfall forecasting in real-time is developed and a study of the role of sampling on forecast ability is conducted. Ground level rainfall fields are forecasted using a stochastic space-time rainfall model in state-space form. Updating of the rainfall field in real-time is accomplished using a distributed parameter Kalman filter to optimally combine measurement information and forecast model estimates. The influence of sampling density on forecast accuracy is evaluated using a series of a simulated rainfall events generated with the same stochastic rainfall model. Sampling was conducted at five different network spatial densities. The results quantify the influence of sampling network density on real-time rainfall field forecasting. Statistical analyses of the rainfall field residuals illustrate improvement in one hour lead time forecasts at higher measurement densities.  相似文献   

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Copyright     
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正Global Change includes climate change and other environmental changes caused by the joint interaction among various layers of Earth. From the positive side, global change provides new opportunities to human and other living forms on Earth. In the meantime, it creates tremendous challenges and negative impact. At present, the negative impacts have reached all primary processes of the global ecosystem and every aspect of human society, especially causing degradation of the ecosystem. For instance, intensive deforestation causes decline of biodiversity; global warming causes sea level rise and increases  相似文献   

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正President:Giampaolo Di Silvio,Italy Vice Presidents:Ulrich C.E.Zanke,Germany Zhao-yin Wang,China The World Association for Sedimentation and Erosion Research(WASER),inaugurated on Oct.19,2004,is an independent non-governmental,non-profit organization.The mission of WASER is to promote international co-operation on the study  相似文献   

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正This journal is established by the Institute of Engineering Mechanics(IEM),China Earthquake Administration,to promote scientific exchange between Chinese and foreign scientists and engineers so as to improve the theory and practice of earthquake hazards mitigation,preparedness,and recovery.To accomplish this purpose,the journal aims to attract a balanced number of papers between Chinese and  相似文献   

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