SD-3A型自动测氡仪故障检修

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。     

SZW-1A型数字式温度计（V2004）通讯故障诊断及排除

基于SZW．1A型数字式温度计（V2004）的维护管理经验和仪器组成,对SZW．1A型数字式温度计（V2004）的通讯故障原因进行了研究。结果表明,导致SZW-1A型数字式温度计（V2004）通讯故障的主要原因有网络链路故障、网络通讯接口故障和仪器主机故障3大类。针对SZW-1A型数字式温度计（V2004）常见非网络链路通讯故障的判定提出了一套诊断流程,并提出了该型号数字式温度计常见通讯故障的排除方法。这些故障的排除方法,对和SZW-1A型数字式温度计（V2004）有类似硬件组成的SWY-1A型水位仪、SWY-Ⅱ型水位仪、SWDW-1型水位地温综合观测仪等“十五”流体观测仪器的维护,有一定参考意义。     

CIC-200型离子色谱仪常见故障解析

结合夏县中心地震台CIC-200型离子色谱仪实际观测,从仪器输液系统、分离系统、基线、管路等方面详细阐述色谱仪常见故障,逐一分析原因,并给出相应故障排除方法,为同类仪器维护提供参考,并为获得准确观测数据,延长仪器使用寿命,提出日常维护方法及建议。     

ZD9A-Ⅱ型大地电场仪故障判断及日常维护方法

介绍ZD9A-Ⅱ型地电场仪工作原理、主要功能特点,并着重介绍了该仪器在台站日常工作中维护方法,结合ZD9A-Ⅱ型地电场仪在台站运行过程中的故障类型统计及相应的维修过程,总结该型仪器的常见故障特征并给出了相应的解决方案,为台站设备维护人员判断、解决问题,提供清晰思路。     

永安地震台SZW-1A数字温度计(V2004)常见故障排除

介绍永安地震台SZW-1A数字温度计(V2004)的组成及结构原理,分析日常观测中该仪器常见故障及典型故障的产生原因及排除方法,提出仪器稳定运行的日常维护管理注意事项,可为其他相关地震台站提供借鉴。     

一款简易SS-Y伸缩仪检测盒研发及应用

本文研发了一款专用于SS-Y伸缩仪的检测装置,具有锁定仪器故障部位、方便仪器调零操作功能,为该仪器日常维护和快速检修提供便利。     

龙岩台VS型垂直摆倾斜仪常见故障分析

通过在日常观测工作中,对龙岩台VS型垂直摆倾斜仪出现的常见故障进行分析,总结了该仪器的典型故障现象及图像表现形式,以利于观测人员识别常见仪器故障,对相关仪器的维护使用、观测数据的预处理和日常工作具有一定的参考意义。     

FD—105K测氡仪常见故障分析与解决办法

本文通过FD－105K测氡仪在仪器维修及标定工作中遇到的比较典型的故障实例,进行分析,查找故障产生的原因并提出了解决问题的办法。对台站测氡仪的标定、维护有一定的指导作用。     

形变数字化仪器故障分析

通过对山东省形变仪器故障的总结和分析,提供了形变仪器故障排除的经验,为台站运行维护提供参考。     

数字化地下流体观测仪器故障分析

介绍了SWY-Ⅱ型数字式水位仪基本工作原理,根据多年工作经验,分析总结几种地震前兆地下流体观测仪器运行故障类型及对应的解决办法。运行故障的种类大致分为:网络通讯故障、供电系统故障、仪器软硬件故障等,其对应的解决方法有:重启设备、更换电源及通信线缆、更换备机备件、维修仪器电路板元器件、软件程序重置及升级等。针对观测仪器故障给出的具体解决方法可以为产出连续、可靠的地下流体观测数据提供技术支撑,同时为地震前兆仪器的维修人员在仪器维修维护方面提供一定的参考。     

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.     

Information for authors

正SCIENCE CHINA Earth Sciences,an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China,and published by Science China Press and Springer,is committed to publishing high-quality,original results in both basic and applied research.     

INTERNATIONAL RESEARCH AND TRAINING CENTER ON EROSION AND SEDIMENTATION(IRTCES)

正Director:Shangfu Kuang,China Vice-directors:Chunhong Hu,China Duihu Ning,China Guangquan Liu,China The International Research and Training Center on Erosion and Sedimentation(IRTCES)was jointly set up by the Government of China and UNESCO on July 21,1984.It aims at the promotion of international exchange of knowledge and cooperation in the studies of erosion and     

Calendar of events

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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