山东苍峄铁矿带预测模型

位于山东省南部苍山-枣庄地区的苍峄铁矿带是一条大型沉积变质型铁矿带,其铁矿储量巨大。为了更好地适应新形势下的铁矿勘查工作,建立了该区的铁矿预测找矿模型,以期提高区内铁矿勘查效率。简要介绍了区内铁矿成矿地质背景,并详细阐明了南山村地区铁矿床特征：该矿床赋存于新太古代泰山岩群山草峪组中;铁矿体的产状呈层状、似层状;矿石为磁铁角闪石英岩和磁铁石英岩,属需选弱磁性铁矿石,为“鞍山式”贫铁矿。区内水文地质条件属简单-中等类型,工程地质属简单类型,环境地质属中等类型。区内的勘查工作证实,明显的磁异常部位是该铁矿带最重要的找矿标志之一。从岩石类型、成矿时代、含矿地层、含矿建造、控矿构造、矿物组合、结构构造、矿体产状、磁异常、重力异常和地形地貌方面建立了苍峄铁矿带的区域综合预测找矿模型。     

川滇地区应力场演化与强震间相互作用的三维有限元模拟

针对川滇地区，在大量搜集、总结前人资料和结果的基础上，建立了包括上地壳、下地壳(两层)、上地幔等4层结构的三维有限元模型. 通过反复调试，确定了其边界条件，并且计算了川滇地区背景应力场、断层蠕动产生的应力场和强震触发的应力场，以及它们的动态变化. 结果表明:后续地震大多发生在前面地震引发的库仑破裂应力正值区，前一地震对后续地震有一定的触发作用，强震是在较高的应力背景下成组发生的. 这对判断、识别地震异常，提高地震预测水平有着很大的意义.      

流域产流事件模型及其应用

本文流域产流的主要环节，以流域下渗容量分配曲线与产流过程的关系为依据，吸收斯坦福流域水文模型的合理结构，并与常规的前期影响雨量算法结合起来，建立产流事件模型。模型在汉江支流丹江和洵河两个流域应用，其产流合格率达８０％以上，经验表明，此模型简便易行，使用效果好，值得研究推广。     

若干南极环境样品的放射性

本文观测比较了第六次南极考察采集的样品和190年采集的中国近海样品的放射性。结果表明,南极海洋沉积物的天然核素、~(137)Cs与中国近海沉积物一样均处于正常的波动范围,并有明显的沉积现象;南大洋表层海水的总β放射性比中国近海海水的少17%～52%;南极地衣对总β放射性的浓集系数达1.3×10~3～2.3×10~3,茎、果实是浓集放射性的关键器官,对~(137)Cs的浓集量达17.5Bq/kg(干),为中国近海海洋植物的8～14倍。     

Study of Finite Element Modeling of Strong Earthquake Activities and Its Preliminary Application—Taking Southwest China as an Example

Based on research result concerning the preparation and activity of strong earthquakes in groups and using the finite element method, a finite element dynamic model for Southwest China is established in this paper. Using this model, the stress adjustment in the whole of the Southwest China region in response to the stress change due to strong earthquake occurrence is studied. The preliminary result shows that many strong earthquakes occurred in areas where the stress heightened after the last strong earthquake. So, the finite element model set up in this paper is useful for judging the regions where strong earthquakes are likely to occur in future.     

Evolution of Anisotropic Coal Permeability Under the Effect of Heterogeneous Deformation of Fractures

Natural Resources Research - Permeability is one of the key parameters to better understand the processes of coalbed methane mining and carbon dioxide geological storage. As a unique porous medium,...     

植被物候参数遥感提取与验证方法研究进展

在气候变化背景下,植被物候作为生态系统对环境变化响应的直接体现方式,日益受到学界关注.获取长期、连续、多尺度的植被物候数据是物候研究的基础,而利用卫星遥感手段获取的物候参数已经成为陆地生态系统变化研究的重要指标.遥感物候参数在农业生产管理、生态系统监测、土地利用类型制图、人类健康和生态系统气候变化响应等领域发挥着重要的...     

Impact of Tourists＇Perceived Value on Behavioral Intention for Mega Events：Analysis of Inbound and Domestic Tourists at Shanghai World Expo

Based on the survey data for 2120 inbound and domestic tourists at the Shanghai World Expo,a structural equation model was constructed for the relationship among tourists’ perceived value dimensions,behavioral intention and revisit intention.Additionally,the influence of tourists’ perceived value dimensions on the behavioral intention and revisit intention was explored.The results show that the utilitarian value and enjoyment value significantly affect the inbound and domestic tourists’ behavioral intention,while the convenience value and aesthetic value have no significant influence.The service value only significantly affects the domestic tourists’ behavioral intention,and the aesthetic value only significantly affects the inbound tourists’ behavioral intention.The utilitarian value,service value and enjoyment value significantly affect the inbound and domestic tourists’ revisit intention,while the convenience value only significantly affects the domestic tourists’ revisit intention.The utilitarian value is the primary factor affecting the inbound tourists’ behavioral intention and revisit intention,and the perceived price has no significant effect on either inbound or domestic tourists’ behavioral intention or revisit intention.The study explores the relationships between tourists’ perceived value,behavioral intention and revisit intention,analyzes the divergence and causation,theoretically enriches the research field of tourism geography and behavioral geography,and has great practical significance to the sustainable development of mega events in China,including the further development of the Shanghai World Expo.     

水敏性地层钻探泥浆性能优化及配制

依据河南许昌地热井水敏性地层钻探工程,在分析水敏性地层的成分、水化机理及钻进泥浆性能需求的基础上,确定水敏性地层钻进需要滤失量小、密度低、流变性好、抑制性强的泥浆。依据文献资料及生产实践经验,初步选出配制泥浆的材料和浓度,采用室内试验测定泥浆性能和正交试验极差分析法优选泥浆材料浓度,优化出泥浆最终的配比,经生产实践验证调整,最终确定了适应项目生产需求的泥浆配方。经实际生产检验,满足水敏性地层钻探需求,效果良好。     

焦家断裂带紫罗姬家以南的延伸问题探讨

焦家断裂带是胶西北地区三大著名的金成矿带之一,一般认为焦家断裂带为龙（口）莱（州）断裂带南段的高家庄子紫罗姬家段。根据近几年的研究成果,认为焦家断裂带在紫罗姬家以南,沿195＆#176;～200＆#176;方位延伸至紫罗綦家与黄家之间分为3支：第一分支沿紫罗綦家—赵官庄—前单家—张家埠至曹家埠村北;第二分支（主断裂带）沿紫罗綦家村东南—大尹家—西尹—西罗台村南至曹家埠村南;第三分支自紫罗綦家与黄家村之间向南延伸至史家村西之后,再向南去向不明,推测逐渐尖灭的可能性较大。