共查询到20条相似文献，搜索用时 296 毫秒
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ZD9A地电场仪在嘉峪关地震台已运行9年.为了提高观测资料质量,通过对观测系统、外线路、仪器、观测资料等的保养、维护、操作和应用,总结出了一些方法和经验,具有一定的借鉴意义. 相似文献
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简要介绍河南省地震局在“十五”期间建成的数字测震台网组成及主要功能,对系统日常维护、运行过程中出现的故障及排除方法和积累的经验进行详细阐述,可对测震台网整体运行维护提供参考。 相似文献
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通过对SD-3A型自动测氡仪故障的检修实例,结合台站仪器维修、维护经验,分析了仪器故障原因,提出处理方法,帮助台站工作人员提高仪器维护能力。 相似文献
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长周期地震动研究综述 总被引：6，自引：0，他引：6
本文对长周期地震动研究的主要方法,即经验统计方法和震源模型方法进行了总结,分析了它们的适用范围和存在的问题。对长周期地震动的研究趋势进行了分析。 相似文献
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本文介绍了姑咱地震台信息节点的网络结构、硬件配置.通过日常工作中的维护经验,总结了一些网络故障的初步判断方法以及对路由器、交换机、防火墙的配置理解.对基层台站的工作人员在日常网络维护工作中具有一定参考价值. 相似文献
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建筑物的抗震设防需要尽可能地掌握未来大地震强震动记录信息,但大地震强震动记录的匮乏阻碍了抗震设防实践的发展。经验格林函数方法作为模拟地震动的主要方法,可以提供可靠的大地震强震动记录,但也存在着许多问题,如缺乏对大地震断层滑动分布不均匀的描述、用经验确定小震数目、模拟方法受到大小地震相似条件的限制等。文中对上述经验格林函数方法存在的问题进行了研究,改进的经验格林函数方法,有效地解决了上述问题。并用其对唐山大地震进行了模拟,并把模拟的地震动时程和反应谱与实际记录相比较,发现用改进方法模拟的地震动加速度反应谱比用未改进方法模拟结果更接近实际的地震动记录加速度反应谱。由此说明改进的经验格林函数可更准确的模拟地震动。 相似文献
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对地震应急卫星通信系统的站点进行了简要介绍,根据日常卫星运行维护工作中的经验,总结了省地震局卫星站点容易出现的故障,提出了通过设备指示灯快速识别设备故障的方法,并对可能出现的常见故障提出了解决方案,对省地震局应急通信现场工程师有一定的参考和实用价值。 相似文献
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M. N. French R. L. Bras W. F. Krajewski 《Stochastic Environmental Research and Risk Assessment (SERRA)》1992,6(1):27-45
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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《地震工程与工程振动(英文版)》2014,(4)
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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George W. Housner 《地震工程与工程振动(英文版)》2008,7(2):I0001-I0001
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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《国际泥沙研究》2014,(4)
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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JianCheng Shi 《中国科学:地球科学(英文版)》2014,57(10):2281-2282
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