南澳岛近50年极端天气事件变化趋势分析

根据南澳岛气象观测及<台风年鉴>资料,对南澳岛近50年的暴雨、干旱、台风、寒潮、气温不小于35℃高温等极端天气事件的气候变化进行了分析,得出累年平均暴雨日数为5.8 d/a;按GB/T20481-2006<气象干旱等级标准>,1970年为重旱年;严重影响南澳岛的热带气旋(中心进入海岸线1个纬距以内)累年平均0.78个/a;寒潮仅出现1次(1991年12月27-31日).在气候变暖背景下,20世纪80年代以来,气温不小于35℃日数呈显著增加趋势,而气温不大于5℃日数呈减少趋势.     

Relationship Between Producer Services Developing Level and Urban Hierarchy —— A Case Study of Zhujiang River Delta

As the Central Place Theory indicates, the centricity of a central city can influence the extension of its service. Since the service industry in the theory is mostly consumer services, it is worth studying the relationship between the producer services and the centricity of the city in the service society with producer services becoming a more important part of the service industry. The paper takes the case of the Zhujiang （Pearl） River Delta （PRD）, a developed region in China, to study the relationship between the developing level of producer services and the urban hierarchy. Based on the analysis about the spatial difference of the producer services in the nine cities of the PRD, and the division of the nine cities according to some economic indices, it is shown that there is a correlation between the developing level of producer services and the urban hierarchy. Furthermore, two deductions about the future status of the producer services in the city and the location of the producer services in a large region can be made from this correlation between the developing level of producer services and the urban hierarchy.     

莱州湾南岸平原浅埋古河道带研究

菜州湾海岸平原在埋深６０ｍ内的浅埋古河道带,可分弥河、潍河和白浪河３个系统,它们大都呈掌状、放射状分布,并与其所属诉冲洪积扇范围相吻合,该区古河道的形成和发育是新构造运动和古气候环境演变的结果。自晚更新世晚期以来,该区有６期古河道发育,其中玉木早冰期古河道和玉木主冰期古河道的砂体沉积粒度粗、连通性好、分布广,即是富水性强、水质好的淡水含水层,又是该区海（咸）水入侵的主要通道,控制在线积粒度粗、连通     

澳大利亚州级层次上的矿权设置

澳大利亚是世界重要的矿业国。其州级层次的矿权设置各有不同。本文对澳大利亚的西澳州、昆士兰州、新南威尔士州、南澳州、维多利亚州、塔斯马尼亚州和北方地区等7个州或领地的矿业权设置进行了简单分析和比较,旨在为我国的矿法修改提供参考。     

美国尤卡山项目经受新的挑战

美国内华达州尤卡山高放废物处置库的研发进展情况，是世人甚为关注的事情，因为如果它能按时建成，那将是世界上第一个高放废物处置库，这对世人今后如何处置高放废物，将起先行者的示范作用，尽管各国的具体国情是不同的。     

隆昌州—上麻屯一带1:5万地质调查中的物探解释

1:5万地质调查中的综合物探工作包括综合剖面测量、岩石(地层)磁性测试,以及重、磁场资料的处理等。应用重、磁场特征,划分重、磁场的地质分区,确定地质体,地质构造的划分标志,印证地质填图中的结果和推断深部地质体和地质构造,完成深部地质图。1:5万地质填图中综合物探工作的开展,提高了地质图的精度,为深部地质研究提供了依据。     

海北州防雷执法现状分析和思考

本文从海北州是藏族自治区域的特殊性和气象防雷执法的特殊性两个角度出发，分析海北州防雷执法现状。针对现状中出现的问题以及根源，提出解决海北州防雷执法存在问题的措施，并以此思考地市级气象执法的合理有效的模式。     

Major ion geochemistry of groundwaters from southern Nevada and eastern California, USA

The dissolved ionic constitutents of groundwaters are,in part,a recored of the minerals and rocks in aquifers through which the water has flowed.The chemical composition and association of these major ions in groundwaters have been used to trace groundwater flow paths and sources,In general,the chemical compostion of water in carbonate-rock aquifers in dominated by calcium,magnesium,and bicarbonate,whereas sodium,chloride,and sulfate can be dominant ions in the water that comes from volcanic aquifers or clay minerals.Since the 1990‘s,we have dealt with the geochemistry of groundwaters from more than 100 springs and wells in southern Nevada and eastrn california ,USA for major solutes and trace elements.This paper compiles the hydrochemical data of major ions of these groundwaters.Based on major ion geochemistry,groundwaters from southern Nevada and eastern California can be classified as carbonate aquifer water,volcanic aquifer water,and mixing water (either mixing of cabonate and volcanic aquifer waters or mixing with local recharges),Piper and stiff diagrams of major ions have graphically shown the general chemical characteristics,classification,and mixing relationships of groundwaters from southern Nevada and eastern California.     

德令哈盆地早侏罗世冲积扇—扇三角洲积体系及其马尔科夫链分析

德令哈盆地下侏罗统含煤磨拉石盆地组合是在以冲积扇-扇三角洲沉积体系为主的沉积环境下发育起来的.简要报道研究区冲积扇-扇三角洲体系沉积及其组合特征,在此基础上借助马尔科夫链建立冲积扇-扇三角洲体系沉积旋回的结构模式,并探讨该结构模式的地质意义.     

长江三角洲地表水环境污染规律初探

根据江浙沪三省市历年的环境监测资料,结合野外实地考察和定点观测数据,初步揭示了近１０年长江三角洲地表水环境污染的一些基本规律：城市河流有机污染严重,普遍出现水体黑臭现象;湖泊氮磷含量逐年增高,水体趋于富营养化;河网干流水质基本良好,中小河流污染突出,市郊小城镇已成为新的水环境污染中心。