JOPENS系统异构数据库迁移整合

介绍了使用MetaMatrix中间件,通过建立虚拟数据库实现JOPENS系统由MySQL数据库迁移到Oracle数据库的一种方法。解决了上海市地震局最新数据中心平台与测震JOPENS系统整合,并保证了整个异构数据库迁移的过程是无缝且平滑的。这样的一次尝试,为地震业务异构数据库的迁移和整合提供了参考。     

基于ICE中间件的通用测震数据库网关应用研究

提出基于ICE测震数据库通用网关的构建方法,利用ICE可扩展性、可重用性、支持多种编程语言和分布式部署的特点,结合分布式中间件技术,定义开发一系列读写操作测震数据库通用接口,为测震数据应用提供多元化服务,实现业务逻辑与数据库访问相分离,同时增强测震业务系统的可扩展性与安全性.该数据库网关在全国测震实际相关业务系统中取得较好的应用效果.     

信息化测震数据管理平台的设计与实现

依托公共安全信息化工程,测震台网数据管理平台在数据资源池环境下,采用分层架构和模块化开发,实现了实时流波形接入和存储、站网基础信息管理、常规数据产品产出、针对特定地震的产品产出、波形数据质量分析等测震台网核心业务的信息化。通过平台的接口和界面,事件波形处理与服务、数据质量分析、震源参数基础数据库建设等测震台网业务取得了长足进步。该平台具有业务集成性、功能实用性、资源共享性和技术先进性等特点,有效提升了测震台网信息化水平,为测震台网现代化发展发挥了积极作用。     

基于FusionCompute的地震行业网私有云平台部署与实现

针对传统地震数据机房存在业务扩展成本高且周期长、维护繁琐、无法保障重要业务系统的无故障连续运作等问题,采用虚拟化云计算技术,实现地震行业网的私有云服务。华为FusionCompute云服务系统将主机、存储等物理资源虚拟化,并整合为统一资源,供多个虚拟机使用,行业专网内运维人员通过用户接口远程访问云平台,在虚拟机上可快速、高效地按需搭建业务系统。地震私有云平台不仅减少业务扩展运营期间的设备采购、系统搭建、运行维护等人力和物力投入,且通过FusionCompute的迁移技术,实现业务系统的"零宕机"服务。     

基于Windows NT服务器的前兆数据共享及其实现

简要介绍了地震前兆数据的现状及其实现数据共享的必要性；分析了常用的二种通用Web数据库的体系结构及应用技术，它们是基于通用网关接口CGI的体系结构和基于服务器扩展API的体系结构。考虑到前兆台网中心硬件设备的条件、所运行的数据库平台和地震前兆数据的复杂性和多样性特点，前兆数据在Internet上的共享服务采用基于通用网关接口CGI的体系结构编写应用程序来实现。以WWW服务器为平台，通过Web服务器方式在浏览器上实现共享，可检索任意台站、任意观测方法、任意地点、任意时段的前兆数据，实现地震前兆数据信息网络服务功能。     

上海市地震异构数据库迁移整合初步研究

测震JOPENS系统是数字地震观测台网的核心系统,采用开源的MySQL数据库。随着数据库技术的不断发展,MySQL作为一个核心数据库有些捉襟见肘。上海市地震局正在建立以Oracle数据为平台的核心数据库,那么将JOPENS系统的MySQL数据库进行整合尤为重要。本文给出了以地震监测数据库迁移整合为基础,提出了对异构数据库尽心整合的一种思路。     

海量多源异构地震监测数据存储和共享服务系统

地震监测数据存储和在线共享服务是提高地震监测服务效能的关键之一.新升级研发的地震连续波形数据存储和共享服务系统实现了海量多源异构监测数据在线存储和共享服务,能够对实时和非实时波形数据按照时间顺序进行连续存储,同步建立与波形数据文件一一对应的波形索引文件.通过波形索引实现连续波形数据的快速查询,基于系统设计的交互命令接口...     

多源异构地震数据的一体化编码和接口技术的设计与实现

以多源异构地震灾情数据为研究对象,针对震后灾情获取缓慢且碎片化、公众涉灾信息数据异构、多维、数据格式差异大、部分数据维度缺失导致的数据无法得到综合利用、决策支持不到位等问题,基于相关灾害信息标准化管理,提出多源异构地震数据的一体化编码和接口技术规范。根据此规范,设计实现了灾情数据的一体化编码管理以及基于开放式接口规范的灾情数据接入,从而实现了灾情数据入库、管理、实时发布的全周期一体化管理。同时,给出了多源异构应急信息大数据资源的统一表达模型,为震后应急管理提供了技术保障,提升了灾情数据管理效率。     

Oracle高可用环境下地震业务数据集中管理探索

通过前兆数据库迁移到核心数据库,初步探索在Oracle高可用环境下地震业务数据集中管理的优越性.对下一步地震业务数据迁移、整合,核心数据库的性能要求、容灾备份和安全性进行思考.     

通用测震数据获取软件包的设计与实现

在掌握数据源及相关数据格式的基础上,实现了读取SSS实时流数据、数据库连续波形、事件波形数据以及SEED文件的通用获取测震数据软件包.该软件包可使应用程序通过统一数据接口获得测震数据.经测试该软件包功能完整、高效易用,提高了地震科技人员的工作效率.     

A Monte Carlo study of rainfall forecasting with a stochastic model

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.     

Earthquake Engineering and Engineering Vibration Aims And Scope

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     

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.     

WORLD ASSOCIATION FOR SEDIMENTATION AND EROSION RESEARCH(WASER)

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     

Enhancing remote sensing research on global change to improve our understanding on Earth system processes

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     

SCIENCE CHINA Earth Sciences SUBJECT INDEX TO VOLUME 57(2014)

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