浅议如何提高地震前兆观测数据的质量     

张正霞 《山西地震》2006,(4):38-39

文中论述了地震前兆观测数据的采集、处理、入库、报送和共享等具体工作,指出了当前数据报送工作中存在的问题,提出了改进措施,以保障前兆观测数据的连续、完整。为地震监测预报提供可信度较高的资料。  相似文献   

地磁实测值与IGRF计算值的差异的变化     

陈伯舫 《华南地震》2007,27(1):15-20

选择了北京、关岛等6个地磁台,作它们的观测值与IGRF值之差随时间的变化曲线,结果发现,以上6台站地磁测值的异常变化都与附近发生的大震相关,而且震级越大、离台站越近,异常变化越大、越早.而且用IGRF作参考场既可靠又方便.  相似文献   

哈萨克斯坦地震地下流体监测、预测的现状及其震兆异常特征的分析     

高小其  陈华静  魏若平  王海涛  刘耀炜  陆明勇  高国英  郭伟英  鲁娜  朱成英  杨晓芳  李志海  史杰  许秋龙 《中国地震》2007,23(2):184-194

40多年来,哈萨克斯坦地震地下流体观测台网历经初期建网、系统清理、政策调整和优化提高4个阶段,目前已形成与中国北京地区流体监测网相当的规模。分析了哈萨克斯坦流体监测台网的地位、台站分布、观测项目、仪器配置及地震分析预测情况。最后,分析了哈萨克斯坦地震地下流体观测资料的特点,并就哈萨克斯坦流体交换资料的震兆异常特征进行了初步总结。  相似文献   

2007年宁洱6.4级地震强震动观测记录   总被引：2，自引：0，他引：2  

崔建文  李正光  赵云旭 《地震研究》2007,30(4):384-388

"十五"期间建设并投入试运行的中国数字强震动台网云南区域台网有20多个强震动台站记录到宁洱6.4级地震产生的地面运动。记录的最大峰值加速度为431.2cm/s2,这是我国大陆自开展强震动观测以来在一次强震中同时获取记录最多的一次,初步展现了"十五"强震动台站建设的成效。  相似文献   

DL-101C数字水准仪水准测量精度研究   总被引：1，自引：0，他引：1  

钱林春  李兵 《测绘与空间地理信息》2007,30(5):151-154

在对DL-101C数字水准仪工作性能测试的基础上进行观测精度评价,总结观测经验为该仪器投入生产使用打下基础。  相似文献   

综合台站观测资料信息管理系统的技术特点     

李荣峰  王永忠 《华南地震》1998,18(3):73-77

介绍了为配合闽南地震示范工程的开展而开发的《综合地震台观测资料信息管理系统》程序设计的基本原则、总体结构及功能,并给出了操作流程示意图和简要说明。  相似文献   

近30年来耕地养老保障功能的时空演变及政策启示   总被引：1，自引：0，他引：1  

王亚辉  李秀彬  辛良杰 《地理研究》2020,39(4):956-969

厘清耕地养老保障功能的时空演变,为新时代农村土地保障功能提供科学判断。把拥有承包权的耕地看作农户的一项资产,利用1986—2015年农村固定观察点中近61万份农户资料,分别从全国和省级尺度揭示耕地养老保障功能的演变规律,为完善农村养老保障体系提供参考。结果显示：按1986年不变价,全国层面上,人均耕地养老保障价值从550元/年降至150元/年,研究期内降幅达到72%。20世纪80年代,农民依靠承包耕地能够满足家庭老年居民的养老支出;1994年其价值已无法支撑老年居民消费,此后养老需求的缺口不断扩大。省际层面上,研究期内各省份耕地的养老保障价值均呈现下降趋势,且省际间存在明显差异;养老需求的缺口不断扩大,其中东南沿海、长江沿线地区尤为突出。耕地养老假说已失去其基本论据,依靠耕地无法满足农村老年居民的养老支出。农村养老保障必须建立在公共社会保障体系的基础上,而不能再指望农户家庭拥有的少量耕地,政府应加强农村养老服务的建设。  相似文献   

Identifying substandard vessels through Port State Control inspections: A new methodology for Concentrated Inspection Campaigns     

《Marine Policy》2015

Substandard vessels that fail to comply with international maritime regulations are the target of Port State Control inspections. Despite their significant costs, many inspections do not lead to any detentions and, in a significant number of cases, no deficiencies are detected. In this paper, quantile regressions for count data are used to estimate the likelihood of having a high number of deficiencies of a specific type. The purpose is to complement existing practices focusing on detention with the objective to improve the selection process. Similar factors influence the likelihood of having a vessel detained and that of having a vessel recording a high number of deficiencies. However, quantile regressions applied to the number of deficiencies help improving the identification of factors influencing the likelihood of finding some specific types of deficiencies, which is the focus of Concentrated Inspection Campaigns. The paper concludes that the selection process for such campaigns should be improved using this new methodology.  相似文献   

工程项目中的目标管理     

张华慧  刘守信 《中国勘察设计》2010,(11):34-37

将投资方、建设者及工程利益方的建设期望与硬性要求具体化,以此形成项目目标,然后根据项目的结构特点对项目目标层层分解,建立工作分解结构（Work Breakdown Structure）,二者形成目标矩阵和目标系统,作为工程项目的管理对象,可以让工程项目管理目标明确;对目标系统中的重要目标加强监控,设置对应监管岗位,然后利用PDCA循环实施目标管理,可以尽可能减少目标执行中的偏离。各大目标间管理的动态平衡是目标管理的基本特点。  相似文献   

Performance of a northwestern Mediterranean bottom trawl fleet: How the integration of landings and VMS data can contribute to the implementation of ecosystem-based fisheries management     

《Marine Policy》2014

The European Union has established a framework to achieve or maintain good environmental status in the marine environment by 2020. The Marine Strategy Framework Directive requires the application of the ecosystem approach to the management of human activities, covering all sectors having an impact on the marine environment. However, fisheries in the Mediterranean are far from a systematic implementation of an ecosystem-based fisheries management (EBFM). Aiming to address this issue, this study explores the potential of the relationship between daily yield by vessel (landings and income by species) and vessel position (known via vessel monitoring system) as a tool for fleet management. This approach is possible due to the current dynamics of Mediterranean fleets, with vessels returning daily to the harbour where landings are registered as weight and income by vessel. Moreover, vessels of >15 m total length have been compulsory monitored by VMS since 2005. A bottom trawl fleet that operates in the northwestern Mediterranean was chosen to develop this approach. Different groups of trawlers were identified, which could be linked to the strategies displayed by the fishermen that were mainly driven by the target species dynamics. Accurate knowledge of the fishing targets driving the fleet dynamics and of the fishing strategies at the vessel level (i.e. fishing ground habitat where the fishing pressure is exerted and corresponding landings) are shown to be a feasible tool for fleet management.  相似文献