现场海水中有机污染物光学测量方法研究     

孙继昌  惠力  吴承璇  程岩  程广欣  徐珊珊  宋文杰 《海洋技术学报》2005,24(4):54-56

介绍了一种用光学方法对海水中的有机污染物（主要包括：叶绿素-a、黄色物质、石油）进行测量的光学系统，该系统可同时测量海水中多种有机污染物的种类和浓度。  相似文献   

Information structure analysis for quantitative assessment of mineral resources and the discovery of a silver deposit     

Wang  Yutian  Tan  Bingqi  Wang  Yifeng  Wu  Jiangtao 《Natural Resources Research》1994,3(4):284-294

We propose an information-structure-analysis (ISA) method to quantify the correlations between quantitative and qualitative variables as well as within each type of variable. This method is applied to the evaluation of mineral resources in the western Zheijiang Province of China. The district contains a number of silver-bearing Fe–Cu–Pb–Zn mineral deposits near igneous complexes and FeCuPbZn zones away from the complexes. Silver anomalies occur not only in the known Fe–Cu–Zn–Pb deposits, but also in the country rock, suggesting the possible existence of silver deposits far from the igneous complexes.The tonnage distribution of silver is modeled by Monte Carlo simulation. This simulation is conducted on the basis of the correlations between silver (Ag) and lead (Pb), since no known data on silver is available. The known tonnage distribution of lead in 11 control cells was used to approximate the tonnage distribution of silver in the Monte Carlo simulation. With ISA and Monte Carlo methods, the total amount of potential polymetallic resources in 49 cells in the western Zhejiang Provice is predicted. Significantly, a deposit with about 24 tonnes of silver has been found within our exploration target area.  相似文献   

西藏层序地层研究进展   总被引：2，自引：0，他引：2  

彭勇民  惠兰  谭富文  王全海 《地球学报》2002,23(3):273-278

迄今为止，西藏区内所开展的层序地层分析主要涉及到中生代的二级或三级层序。基于露头剖面的沉积相、古生物、磁性地层以及地质事件的综合研究，探讨了三叠纪、侏罗纪和白垩纪的层序地层模式及其形成机制。现今所取得的进展主要表现在3个方面：①初步建立了区内中生代层序地层年代格架；②不同时代、不同类型盆地中的层序数量、结构与层序类型具有较大的差异；③层序地层与磁性地层的结合研究，取得了重要的成果。未来区内的层序地层研究应在3个方面展开；①高分辨率层序地层研究，树立株罗纪－第三纪海平面变化曲线；②探索层序地层填图新方法；③多岛弧造山模式和多机制的隆升模式等大陆动力学问题也是层序地层所遇到的新挑战。  相似文献   

An oases dynamics model and its application in the Manas oasis     

CHEN Zhengjiang  SHI Wenzhong  HUI Yanghe 《地理学报》2002,12(3):348-356

This study applies theories of systems and system dynamics to ecological economic systems in the oasis environment, with the intention of finding the basic characteristics of the oasis environment and its feedback structures. This study explores the inner mechanisms of economic development in the oasis environment and its relationship to policy variables. This model is applied to economic development in the Manas oasis of the Xinjiang Uygur Autonomous Region of China. System dynamics method starts from studying feedback structure within the system study and then searches for the best solution through identifying the right "policy point" and through model simulation in the computer. It embodies the cream of "systems cybernetics theory". This study is justified because the nature of the oasis system and the simulation results are scientifically sound and practically feasible.  相似文献   

单程波方程偏移算子高阶辛格式   总被引：11，自引：3，他引：11       下载免费PDF全文

杨辉  刘洪  李幼铭 《地球物理学报》2003,46(4):533-538

针对地震偏移算法中单程波算子中e指数项的近似，提出一种高阶辛格式算法. 与非辛格式的近似、一阶辛格式近似和两步法进行数值对比表明，文中提出的高阶辛格式具有更高的精度. 脉冲响应的计算也表明文中的近似方法具有降低频散效应和适应横向变速的能力. 用Marmousi模型验证了对复杂构造的成像的能力，实际资料计算表明本文方法适合于较大深度的稳定准确成像.  相似文献   

近年我国十大重要金属矿种找矿重大进展与成果   总被引：1，自引：0，他引：1  

陕亮  张万益  姚晓峰  马腾  刘江涛  贾德龙  王尧  张鑫刚 《地质论评》2016,62(S1):151-153

近年我国重要矿产资源勘查成果不断快速涌现。为服务矿产勘查进展长期动态跟踪与成果集成研究,2010~2014年,笔者依托原中国地质调查局发展研究中心承担的《重点成矿区带矿产勘查跟踪与成果集成》、《全国地质勘查进展分析》等项目,以铁、铜、铝、铅锌、金、钨、锡、钼、镍、锰等十大重要金属矿产勘查进展为主要研究对象,研究分析了勘查成果特征。  相似文献   

阿尔金北缘岩石变形机制——来自X光组构分析的证据     

何江涛  陈柏林  王永  孟令通  吴玉  韩梅梅  王斌 《地质通报》2016,35(1):123-129

对阿尔金北缘地区变形蚀变花岗岩、花岗质糜棱岩、变形酸性火山岩和变形英安质凝灰岩中石英和绢云母2种矿物进行X光岩石组构分析,认为本区岩石变形比较明显,宏观面理近于东西向展布,绢云母变形较强,平行于面理定向排列;而石英以底面或近底面滑移为主,部分样品兼有柱面Ⅰ型滑移和柱面Ⅱ型滑移,反映本区岩石变形机制为中浅层次的脆-韧性变形(10~15km、250~350℃、0.25~0.40GPa)。通过岩石组构特征与宏观面理产状,推断本区韧性变形以右行运动为主,与板块碰撞在阿尔金北缘大平沟地区产生的韧性变形带特征一致。  相似文献   

基于近岸GPS RTK技术的潮位和波浪提取算法研究          下载免费PDF全文

党超群  齐占辉  李明兵  赵江涛 《海洋测绘》2016,(1):63-64

由于潮汐和波浪的周期相差甚远,对实时海面高程数据进行相应的低通和带通滤波即可提取潮位和波浪信息。通过对仿真的实时海面高程数据进行平滑滤波、中值滤波、小波滤波等低通滤波,以及椭圆、巴特沃斯等带通滤波结果分析表明:近岸GPS RTK技术可用于潮位和波浪同步测量;对于潮位信息的提取方面,平滑、中值、小波等低通滤波均能很好的提取出潮位信息,其中平滑滤波最佳,且工程中易于实现;对于波浪信息的提取方面,椭圆滤波、巴特沃斯、切比雪夫Ⅰ型等带通滤波均能很好提取出波浪信息。  相似文献   

First Report of Zircon U‐Pb Ages from Lubei Cu‐Ni Sulfide Deposit in East Tianshan of Central Asian Orogenic Belt,NW China     

LI Ping  ZHAO Tongyang  ZHU Zhixin  TIAN Jiangtao  LI Dahai 《《地质学报》英文版》2018,92(2):855-856

正Objective The East Tianshan mafic-ultramafic rocks belt mainly produced in the eastern Jueluotage belt is an important part of the Central Asia Orogenic Belt(CAOB).The wellknown deposits including Huangshan,Huangshandong,Tulaergen,Hulu,Xiangshan were have been consecutively discovered in this belt(Duan Xingxing et al.,2016).The new discovery of the Lubei Cu-Ni sulfide deposit in recent  相似文献   

Forward solver for deep earth exploration and induction logging using custom built Edge-Element FEM technique     

Mingyang Lu  Wuliang Yin  Shijie Sun  Jiangtao Sun  Zhang Cao  Lijun Xu 《《地质学报》英文版》2018,92(Z1):302-304

  相似文献