雷电监测预警系统的原理及应用

本文讨论了有关雷电的基本知识，列举了目前存在的各种雷电定位方法，分析了雷电定位的几个过程。对近期引进VAISALA公司的SAFIR3000型雷电监测预警系统采用的探测原理做了分析，并总结了这套探测系统采用的VHF干涉测量原理特点及不足之处。     

Experimental Investigation of Instantaneous Properties of Wave Slamming on the Plate

The purpose of this paper is to investigate the instantaneous properties of wave slamming on the plate structure of an open structure.The advanced instantaneous measuring technique-Particle Image Velocimetry(PIV) is applied to acquire the instantaneous velocity field of wave slamming.From the cross-correlation analysis results of the images captured by the CCD camera,the flow fields of wave impacting on the structure are displayed visually,and the instantaneous whole-field fluid velocity vectors are obtained.The relation between the instantaneous peak impacting pressures and the instantaneous velocities of water particles is studied by probability analysis.     

智能地质调查体系与架构

中国地质调查局用了近10年时间,在基础地质调查和矿产调查领域基本完成了地质调查全流程数字化过程。在"云"计算与大数据技术等新一代信息技术的兴起大环境下,未来5至10年,地质调查主流程信息化的方向和目标是什么呢?本文基于新一代信息智能技术和智能设备在地质调查数据采集、数据分析处理、数据交换传输、三维建模、信息泛在服务、业务管理全面深度融合的基础上,结合智能空间与普适计算概念给出了智能地质调查定义,提出了基于云计算和Hadoop生态体系为基础的天地空一体化的智能地质调查体系、架构和应用模式,并对其关键技术进行了讨论。     

安徽省琅琊山铜矿床深部资源潜力分析及勘查

通过矿山生产实践对控岩控矿构造的认识积累和矿区构造形迹的解析,结合CSAMT法测量所获得的异常,推断矿床岩体底部隐伏矿体的存在。经深部资源勘查项目的实施并得以验证,进而提出了下一步资源递进勘查的总体方向和目标。     

新疆东昆仑大沙沟地区水系沉积物测量地球化学特征及找矿方向研究

在1∶5万水系沉积物测量基础上,对东昆仑大沙沟一带成矿元素分布特征进行研究,获得了较为丰富的区域地球化学成果。通过对元素分布特征、元素相关性、地球化学参数特征等进行研究。结果表明,该区元素的富集与地层、构造、岩浆岩明显相关;Cu、Zn、Au、Ag、Sb、Hg富集成矿可能性较大,可作为区内主成矿元素及指示元素。本次工作共圈定37处综合异常,6处成矿远景区,5处找矿靶区,为下一步找矿工作提供了地球化学依据。     

物化探在金寨县西岭冲铅锌多金属矿中的应用

金寨县西岭冲铅锌矿是近期新发现的铅锌多金属矿床。为了查明矿床深部地质特征,在研究区开展了地质调查、高精度磁法测量等工作,分析了磁异常并对地质体特征进行推断。结果表明: 研究区经磁法圈定的地质体与实际矿体地表位置吻合较好; 初步确立研究区矿致异常的“构造+岩浆热液+岩性+化探靶区+高精度磁测”“五位一体”的判断标准,建立基于“程序结构法”的找矿模式; 根据地质、物化探等已知矿床情况,圈定了3个找矿靶区,为研究区寻找类似矿床提供信息支撑。     

高精度重力方法在高青地区探测古潜山构造中的应用

本文根据作者几年来把高精度重力勘探方法应用在胜利油田进行古潜山构造探测的生产实践经验,总结了在油气勘探中高精度重力方法应用的新进展,阐述了它在勘探程度极高的胜利老油区依然可以解决一些石油地质问题,尤其与其它物探资料的联合解释取得了明显的地质效果。依据高青测区所取得的高精度重力资料,基本查清了区内的古潜山分布规律,为下一步古潜山油气藏的勘探部署提供了重要的参考资料。     

Geogenic and anthropogenic zinc in epiphytic and terricolous lichens in Finland

At 31 sites in Finland the Zn content was determined of the epiphytic lichen Hypogymnia physodes (L.) Nyl. growing on pine and birch, the terricolous lichen Cladina spp. in pine bark, and the inner part of birch bark. The anomalous contents of Zn in H. physodes on pine and Cladina spp. in soil appeared to be strongly related to sulphide ore deposits. Anthropogenic Zn correlated closely with S and Fe in H. physodes on pine and with Fe in Cladina spp. The binding of geogenic Zn was related to iron hydroxides, and was attributed to the different uptake mechanism of S in these lichens. Elevated values of Zn in H. physodes on birch were due to both geogenic and anthropogenic sources. Zinc in pine bark increased with the Zn content in H. physodes and reached a limiting value.     

The Paleo－Environmental Significance of Sr and Ca Contained in Acid－Soluble Fraction of Plateau Loess Deposits in Xining Basin

The Xining Basin,located on northeastern Qinghai-Xizang Plateau,is adjacent to the Qaidam Bsim and Gobi-desert.Therefore,thick,integrated deposits of loess or paleo-sol sequence were well developed.As is well known,there is much paleo-environmental information recorded in loess and plaeo-sol.So if we deal with paleo-environmental index from different an gles ,especially from loess geochemistry,some important and detailed paleo-environmental evolutional information will be acquired.Based on this,the authors determined the contents of Sr and Ca contained in acid-soluble fraction from the bottom to the top of the Panzishan section.This section was obtained through making a well about 17 m in depth,including S1 paleo-sol that was developed during the last interglacial period.According to the results,it is found that variations in contents of Sr and Ca are well correlated with conversion of loess and paleo-sol.In loess deposits,the contents of Sr and Ca are higher than those in paleo-sol deposits.It is known that loess was deposited under cold-dry climate conditions and paleo-sol was developed during warm-humid climate episodes.It is concluded that due to their mobile behaviors,under cold-dry climate conditions,Sr and Ca are stagnant during weak weathering,but under warm-humid climate conditions,Sr and Ca are easily leached and transported in aqueous solution.Therefore,they can be utilized as indicatiors of climate changes.Moreover,variations in contents of Sr and Ca are more sensitive than susceptibility.The mobile behaviors of Sr and Ca contained in acid-soluble fraction can serve as a new quantitative index to evaluate paleo-environmental changes on the plateau.     

冀北隆化小罗卜沟金银矿床特征及找矿意义

冀北隆化县小罗卜沟中型金银矿床的发现是该地区找矿的重大突破。勘查区位于1∶20万和1∶5万Au、Ag等多元素综合异常内,通过以钻探、硐探为主的探矿工程,基本查明了矿体赋存于早白垩世九佛堂组复成分角砾岩和义县组安山岩及安山质火山角砾岩的构造裂隙内。矿体受断裂带控制,与围岩界线明显,对围岩没有选择性,矿床属燕山期与岩体有关的浅成中低温热液矿床。矿区内共圈定17个矿体,矿体长28～788 m,斜深8～489 m,平均厚度0.80～3.96 m,Ag平均品位68.44×10~(-6)～447.50×10~(-6),共生Au平均品位1.16×10~(-6)～6.25×10~(-6);伴生Au平均品位0.20×10~(-6)～1.00×10~(-6),伴生S平均品位2.34%～11.10%。主要矿体Ⅳ-1银资源储量达中型。矿区内及外围仍存在寻找多金属矿床的潜力。该矿床的发现对寻找同类矿床具有重要指示意义。