1668年山东郯城81／2级地震水灾分析

文以历史记载为依据,对1668年7月25日山东郯城地震的水灾进行了分析,总结出这次地震水灾的几个特点。     

以预防为主,综合防御地震灾害

本文在分析我国防震减灾主要途径的基础上,提出了现阶段防震减灾要贯彻“以预防为主,综合防御地震灾害”的工作思路。论述了综合防御的主要工作环节,根据分区分类指导的原则,防震减灾工作的重点应是全国重点地震监视防御区。     

Agricultural area impacts within a natural area: Cades cove,a case history

Agricultural management in Cades Cove, an historic district in Great Smoky Mountains National Park, has affected natural resources both within the district and in the adjoining natural areas. Aquatic impacts of haying and cattle grazing included increases in water temperatures, turbidity, nutrient loading, and bacterial counts and decreases in benthic macroinvertebrate density and fish biomass. Wildlife populations, including groundhogs, wild turkeys, and white-tailed deer, have increased in the open fields and around the periphery of the historic district. Intensive deer foraging has removed deciduous seedlings and saplings from woodlots, lowering species diversity and favoring coniferous reproduction. Cades Cove has limestone habitats unique in the park, and both deer browse and cattle grazing may have disturbed populations of rare plant species. Effects on water quality are detectable at a campground 15 stream km from the agricultural area, and the effects of deer foraging extend about 1 km beyond the open fields.Since historic landscape preservation is presently a goal of the park, managing for open vistas in Cades Cove will require some sort of continuing disturbance. Conversion of cattle pastures to hayfields would reduce aquatic impacts but the deer herd might increase as a result of reduced competition for forage. Retarding old field succession would increase populations of native plant species dependent on sunlight, but would require government-funded mowing. Other options are discussed. Completely eliminating the effects of the historic district on adjoining areas may be impossible, at least under present economic constraints.     

安徽及邻区地震序列类型的判定及其分布特征

根据《大中城市震后趋势快速判定工作方案》制定指南,结合采用八五攻关成果中的一些新方法和历史地震资料,对安徽省及其邻近区域地震震型进行了判定,同时简要分析了其分布特征,以求在震后趋势判断上做些有效的工作。     

巢湖14~#井水位微动态异常研究

应用微动态异常频次、Ｍ２波振幅比等方法,对巢湖１４＃井水位１９８７～１９９７年进行了全过程的分析研究。研究结果表明：在华东几次中强震前,该井水位的微动态异常频次在地震前３～４个月有明显增高的异常显示,而水位Ｍ２波振幅比在地震前也存在３～４个月的下降异常。由此可以认为该井有可能成为华东及东部沿海５级以上地震的灵敏井点之一,而且在地震的短期预测方面可能会提供有益的异常信息。     

前兆异常与地震相关性研究—— 一个值得广大地震学者重视的问题

简要介绍了前兆异常与地震相关性定量分析方法,并列举了在进行这方面研究中目前存在的薄弱环节和困难,以期引起广大地震分析预报人员的重视。     

皖07井水位与地震关系初探

从分析皖０７井水位的映震能力入手,探讨地下水与地震的关系。文中着重对１９９６年１１月９日南黄海６１级等４次中强地震前该井水位的异常特征进行分析,并对该井水位映震的机理提出一些粗浅的看法。     

苏州地区有关南黄海6.1级地震的前兆异常特征及预报检验

根据对南黄海６．１级地震前，苏州地区１９９５年９月～１９９６年１０月以地下水动态、地下水化学为主的前兆异常的分析，预报了这次地震，并对其进行了检验及原因分析     

南黄海6.1级地震的中期预报

归纳介绍了１９９５年两篇报告中的中期预报意见及主要依据，并据此讨论了这次中期预报与南黄海６．１级地震的对应关系及今后长南带海域６级以上地震中期预报的思路     

地应力壶与临震预测

设计和安装了地应力壶，在１９７７～１９７８年进行了观测。用日变曲线异常进行临震预测。在地震三要素预测中，发震时间预测较准确；在地点上震中方位角预测较准，震中距难以预测；震级预测误差较大。