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发展中的山东数字地震台网 总被引：2，自引：2，他引：0
山东数字地震台网承担山东地区及附近海域的大震速报和微震监测任务。随着国民经济的发展和数字化技术的成熟,在“八五”期间建设了济南无线遥测地震台网;“九五”期间改造建成了数字遥测地震台网;“十五”期间山东数字地震台网建设后,台站布局、监测能力、大震速报效能得到加强,为地震研究、地震速报、地震应急提供了可靠的技术平台。 相似文献
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赵建和 《地震地磁观测与研究》2002,23(1):24-27
前言在中国地震局与安徽省政府的大力支持下 ,“九五”期间安徽省地震局完成了合肥数字遥测地震台网、蒙城区域有人值守数字地震台、国家数字地震台网合肥台的建设 ,现投入正式观测运行 ,并取代了原模拟观测。但是监测设施的数字化改造仅占全省地震台网的2 7% ,合肥数字地震台监控 ML 2 .5地震范围仅为全省地域面积的 1 / 3 ,而皖南、皖北地区台站仍为模拟观测 ,难以适应新形势下安徽省防震减灾事业发展需求 ,因此 ,在“十五”期间将建设省级数字地震台网。图 1是“九五”期间安徽省数字地震台网的建设概况。1 “十五”安徽省级数字地震观… 相似文献
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引言数字记录地震仪具有记录频带宽、分辨率高、动态范围大,以及易于与计算机联接的优点,1975年全球开始在地震观测系统中采用数字记录方式,使地震学的发展出现了一个飞跃。我国于1987年开始中美地震科技合作项目,建立了中国数字地震台网(CDSN),通过“八五”、“九五”期间的中国数字地震观测系统建设,尤其是正在建设中的“十五”项目,经过中国地震局和有关部门的重视和支持,以及广大地震科学工作者和工程技术人员的努力,现已建立了比较完善的数字地震观测网络系统。模拟地震观测在为人类做出约100年的贡献后,作为地震观测的一种科学手段… 相似文献
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1.全球地震学的国际合作为了能记录和分析在广大的分散地区的地震资料,建立全球地震台网是十分必要的。为了推进地震和地球内部的研究,许多国家设计并建立了新的地震观测台网。法国最近设计并建立了法国全球地震台网(GEOSCOPE)。西欧国家目前正在制定“ORF-EUS”地震台网计划。中国现已建立了新的地 相似文献
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简要回顾了数字地震学诞生以来所取得的科学成果。结合我国地震观测系统大规模数字化改造的实践,着重阐述了区域数字化地震台网的观测优势,以及在台网建设目标、观测资料的充分利用和高素质人才培养方面存在的劣势和不足。还提出了对关于区域数字地震台网建设和发展过程中的指导思想、“软件”和“硬件”的关系、基础和应用研究与地震预报的关系、数字地震学的发展与高素质人才培养的关系等等问题的思考和建议。 相似文献
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2000年以来我国地震观测系统得到了迅速的发展,目前,已建成了由国家数字地震台网,区域数字地震台网,火山数字地震台网和流动数字地震台网组成的新一代中国数字地震台网。本文介绍了中国数字地震台网的仪器配置情况和各种仪器的主要参数,并结合我国数字地震台网中使用的地震观测系统,阐述了仪器传递函数的计算方法。 相似文献
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1 中国数字地震台网概况中国大陆邻接印度、欧亚和太平洋板块的边缘 ,其特点在于具有复杂的地壳构造和高地震活动性。中美合建的中国数字地震台网 ( CDSN)运行 1 5年来 ,在中国地震学研究中发挥了重要的作用。CDSN作为美国地震学联合研究协会 ( IRIS)部署的全球地震台网 ( GSN)的参与伙伴 ,为全球地震学研究做出了贡献。CDSN系中美地震研究科技合作议定书中的项目 ,也是两国政府间的科技合作项目之一。台网的建设始于 1 983年 5月 ,历经 3年的场地准备和技术实施 ,于 1 986年 7月建成。1 986年 1 0月 1日起 ,CDSN数据管理中心以… 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
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Dissolved total carbohydrates (DTCH), dissolved free monosaccharides (DFMS), dissolved organic carbon (DOC), biodegradable DOC (BDOC), and humic substances (HS) were measured in White Clay Creek (WCC), a stream in southeastern Pennsylvania Piedmont, USA. Samples were collected over different seasons and under baseflow and stormflow conditions. DOC concentrations ranged from 1.0 to 12.8 mg/L C with the highest concentrations associated with stormflows. Carbohydrates ranged from 0.42 to 12.4 μM and accounted for 2.9 to 12.7% of the DOC. Humic substances represented the major DOC fraction, accounting for 55 to 72% of the DOC pool under all flow conditions. The humic fraction had a lower carbohydrate content (4.4%) than the non-humic fraction of DOC (7.2%). Stormflow DOC was enriched in carbohydrates relative to baseflow DOC, but the percentage of humic-C changed little. Carbohydrates were primarily present as dissolved polysaccharides (55%), but a significant fraction was bound to humic substances (40%), while a small proportion was present as monosaccharides (5%). The major monosaccharides in stream water, listed in order of decreasing concentration, included glucose, galactose, rhamnose, xylose, arabinose, mannose, and fucose. On average (30.6 ± 7.4)% (n = 44) of the stream water DOC was biodegradable, and carbohydrates accounted for 9.9 to 17.7% of the BDOC. 相似文献