地震动强度与地震烈度速报研究   总被引：17，自引：2，他引：17  

李山有  金星  陈先  马强 《地震工程与工程振动》2002,22(6):1-7

本在总结了美、日等国家和我国大陆与台湾地区基于实时或近实时强震台网的地震动强度（烈度）速报方法的基础上，对我国地震动强度（烈度）速报及计算机软件编制中的关键技术问题进行了讨论。  相似文献   

地震综合信息多渠道发布系统设计与实现     

孙路强  张春莉  徐小远  许可 《震灾防御技术》2020,15(3):563-570

针对地震速报信息、地震预警信息发布渠道单一，无法与地震应急成员单位进行及时有效信息的共享问题，天津市地震局对接市突发公共事件预警信息发布系统、武警总队参谋部和中新生态城智慧城市管理中心，通过开发综合信息发布平台，以国际通用预警CAP协议数据包的形式向成员单位实时推送地震预警、速报信息，实现通过电视媒体、预警终端、短信平台发布地震实时信息的目的，同时各应急成员单位通过地震信息服务系统推送的信息快速生成各单位相应的应急处置方案，为地震应急救援工作提供依据。  相似文献   

X射线荧光光谱法快速分析镁质耐火材料中硅铝铁钛钙镁   总被引：1，自引：0，他引：1  

王芙云  袁翠菊  任向阳 《岩矿测试》2008,27(3):232-234

采用X射线荧光光谱法快速测定镁质耐火材料（包括原料镁砂及其制品镁砖）中的SiO₂、Al₂O₃、Fe₂O₃、TiO₂、CaO、MgO等6种组分。利用粉末直接压片法制取试样,确定仪器最佳参数,系列标样建立工作曲线,经验系数法对基体效应进行校正。对于主次组分,方法精密度低于5%（n=10）。方法用于实际样品的测定,结果与实验室化学法和其他单位的X射线荧光光谱法相符。方法适用于厂矿企业大批量生产的镁质耐火材料化学组成分析。  相似文献   

江汉复兴I号断块近地表石油微生物勘探研究   总被引：1，自引：1，他引：0  

袁志华  张杨  张玉清 《地质论评》2008,54(5):641-644

油气微生物勘探,作为一种新的油气勘探技术,因其快速而多解性小,日益受到勘探界的重视。通过对江汉复兴I号断块的油气微生物勘探研究,不仅对研究区内的S4正钻井成功地进行了快速评价,而且圈定了最有利富集区,同时,指明了勘探方向可向南部转移。最后,通过对研究区长期跟踪研究表明,在油气微生物勘探之后所完钻的12口井中,其含油情况均与微生物异常结果相符,充分展示了油气微生物勘探新技术的巨大应用前景。  相似文献   

土壤中五氯酚的快速测定   总被引：2，自引：0，他引：2  

肖宇芳  刘广民  董永亮  尹莉莉 《岩矿测试》2008,27(2):117-119

针对五氯酚(PCP)污染土壤,根据NaOH与五氯酚反应生成五氯酚钠的原理,将不易溶于水的PCP与碱液反应生成易溶于水的盐类,从而达到从土壤中提取五氯酚的目的。用紫外分光光度法定量测定五氯酚含量,确定出最佳提取与分析条件。结果表明,PCP-Na合适的紫外吸收波长为319 nm;在300 r/min振荡时,最佳提取条件为提取液pH>12.5、土液比为1∶8(g/mL)、提取时间为20 min。在此条件下,加标回收率为91.2%~116.7%,最低检测限为2μg/mL。方法快速、简便,适合于农田土壤中五氯酚的现场检测。  相似文献   

Progress in rapid climate changes and their modeling study in millennial and centennial scales     

Liya Jin  Fahu Chen 《Frontiers of Earth Science》2008,2(2):187-198

Rapid climate change at millennial and centennial scales is one of the most important aspects in paleoclimate study. It has been found that rapid climate change at millennial and centennial scales is a global phenomenon during both the glacial age and the Holocene with amplitudes typical of geological or astronomical time-scales. Simulations of glacial and Holocene climate changes have demonstrated the response of the climate system to the changes of earth orbital parameter and the importance of variations in feedbacks of ocean, vegetation, icecap and greenhouse gases. Modeling experiments suggest that the Atlantic thermohaline circulation was sensitive to the freshwater input into the North Atlantic and was closely related to the rapid climate changes during the last glacial age and the Holocene. Adopting the Earth-system models of intermediate complexity (EMICs), CLIMBER-2, the response of East Asian climate change to Dansgaard/Oeschger and Heinrich events during the typical last glacial period (60 ka B.P.-20 ka B.P.) and impacts of ice on the Tibetan plateau on Holocene climate change were stimulated, studied and revealed. Further progress of paleoclimate modeling depends on developing finer-grid models and reconstructing more reliable boundary conditions. More attention should be paid on the study of mechanisms of abrupt climatic changes as well as regional climate changes in the background of global climate change. __________ Translated from Advances in Earth Science, 2007, 22(10): 1054–1065 [译自: 地球科学进展]  相似文献   

earthquake disaster rapid assessment for emergency response supported by high-precision data of hazard bearing body     

AN Ji-wen  XU Jing-hai  NIE Gao-zhong  BAI Xian-fu 《地震地质》2015,37(4):1225-1241

The earthquake disaster rapid assessment(EDRA)is the core technical support for the post-earthquake emergency response. At present, with the popularization of high-precision population, social and economic data, most of the subordinate units of China Earthquake Administration(CEA)have heightened the precision of hazard bearing body data used in EDRA from the original county-level precision to the 30″×30″ precision. However, while the precision of fundamental data has been heightened, no efforts have been made to improve the main algorithms and the technical process of EDRA. It turns out that the assessment has become more accurate, but the problems of the time-consuming process(10-20 minutes, probably 20 minutes or more in great earthquakes)and the low-precision losses distributions that exposed in EDRA supported by county-level precision data remain unresolved.This paper introduces the high-precision(30″×30″)hazard bearing body data, and describes the principle of EDRA and its implementation under the support of county-level precision data at first. Then the paper elaborates the principle of improving EDRA's data foundation using high-precision hazard bearing body data, the principle of improving the computation efficiency and persisting the data precision in the assessment process by means of the cell-to-cell grid algebraic operation, and the method for improving the assessment speed through the segmentation and reorganization of the technical process of EDRA.It is validated that through the improvements, the EDRA has become more accurate and much less time-consuming(less than 1 minute), and is able to output high-precision(30″×30″)distributions of seismic losses. The high-precision hazard bearing body data of wide range are the simulated data but not the survey data. Though the data have been simulated based on the census data, there is still a gap between their accuracy and the real situation. Further research and optimization on the data are needed.  相似文献   

快速集聚发展过程中的河谷型城市的空间整合与规划--以兰州市为例   总被引：3，自引：3，他引：0  

杨永春  张从果  刘治国 《干旱区地理》2004,27(4):603-609

中国西部部分河谷型城市自1949以来一直处于较为快速的集聚发展过程中。产业、各种基础设施大量在河谷中兴建。但是,由于地形条件的约束,这部分城市出现了建设用地紧张、环境问题突出、空间职能配置体系不合理等问题。以兰州市为例,通过对兰州城市在快速集聚扩张过程中空间结构存在问题的分析,提出了旧城“空间职能置换”和新城区建设的空间整合和规划思路,设想了未来50年兰州城市空间建设方案,探讨解决目前这类城市所面临的产业结构升级换代、城市现代化与环境综合治理等相关问题的思路与方法。  相似文献   

新疆地震台网中心速报卡信息提取软件研制     

陈向军  刘平仁  马学军 《高原地震》2012,24(2):71-72,76

新疆地震台网中心速报卡信息提取软件根据大震应急快速反应的相关要求,结合震情值班室工作实际,提取正式速报卡信息内容,提高了大震应急短信的发布速度。  相似文献   

浅谈基于高分辨率卫星影像的地形图快速更新     

姚晓丽  霍爱梅  秦永志  李婧 《测绘与空间地理信息》2022,45(1):112-113,117

随着测绘技术在经济、文化、农业、国防等方面的应用,对测绘技术水平要求越来越高.本文探讨了通过高分辨率卫星影像快速更新地形图的优势,分析现阶段应用过程中存在的问题,并提出了解决思路.  相似文献