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1.
Debris flow and Karst collapse are the main parts of geological disasters in Anshan,which have affected on the construction and development of the social economy of Anshan.In order to enhance the studies of rules of disaster and give scientific estimation and alarm ahead of schedule warning,we established the warning system of Anshan and investigated the corresponding software,which are based on the deep discussions about the crisis estimation and methods of prediction of disasters.In this paper,the foundation of model used in estimating the alarm ahead of schedule for disaster and the methods of appraisal for the alarm ahead of schedule are discussed.This system for warning and evaluating is the combination of the models of warning and GIS flat roof,with so many virtues,such as complete functions,convenience,applicability,which has considered the output of data,analyses of space,chooses of model,output of production,report of information for warning and the statements and help of system.  相似文献   

2.
分析了人类发展向可持续发展模式过渡的必然性 ,指出必须适合俄罗斯现实的人类发展指标。阐述周围环境及确定俄罗斯达到可持续发展途径及可能的指标 ,强调在建立国土可持续发展模式时历史观点的重要性。分析了俄罗斯可持续发展地图集结构的特征。  相似文献   

3.
报道了西南印度洋中脊47°E~55°E洋脊段热液区硫化物中He、Pb和Cu同位素特征,探讨了热液硫化物成矿物质来源特征。结果表明:硫化物N(3 He)/N(4 He)值变化范围较大(R/Ra=0.85~7.02),显示洋中脊玄武岩和海水对He来源具有不同贡献,硫化物中He主要来源于洋中脊玄武岩,也有部分放射性成因He的混入;热液硫化物Pb同位素比值变化范围很小(N(206 Pb)/N(204Pb)=18.196~18.239,N(207 Pb)/N(204 Pb)=15.479~15.490和N(208 Pb)/N(204 Pb)=37.951~38.023),与西南印度洋中脊玄武岩Pb同位素比值较大的变化范围相比,热液流体循环过程中Pb同位素发生了明显均一化;硫化物单矿物Cu同位素组成均为正值(δ(64 Cu)=(0.02~0.52)×10-3),显示西南印度洋中脊热液硫化物呈现略微富集Cu重同位素特征;西南印度洋中脊热液硫化物中He、Pb和Cu同位素记录了热液喷口流体和金属源区特征,热液硫化物成矿物质主要来源于洋中脊玄武岩和海水,但明显经历了热液流体再循环和后期改造过程。  相似文献   

4.
无单放货频频发生 ,导致对承运人提出的索赔案件不断发生。文章拟从无单放货的表现形式入手 ,分析每一种形式中无单放货人的法律责任  相似文献   

5.
东营凹陷中央隆起带是胜利油田油气最富集的地区之一,前人对东营凹陷中央隆起带进行了诸多方面的研究,但对中央隆起带不同区域的差异隆升过程及构造形态缺少对比。该文通过平衡剖面的绘制,重塑了东营凹陷中央隆起带不同区域的差异构造形态及演化过程。结果表明,中央隆起带东段辛镇构造带断裂活动从沙三开始,沙二沉积期构造雏形基本显现;东营组沉积期构造格局基本定型;馆陶组沉积期断裂数量、构造幅度进一步增大;到明化镇组沉积期,构造形态发展为现今状态。中央隆起带西段梁家楼-现河断裂带自沙四沉积期开始发育,沙三末期构造雏形基本显现;沙二沉积阶段构造幅度加大,构造形态基本定型;东营组沉积阶段构造形态进一步扩大,到明化镇组沉积阶段,发展为如今构造形态。  相似文献   

6.
MANDELBROT enunciated the uncertainty of the length of a coastline in his paper“How long is the coast-line of Britain?“ published in “Science“in 1967.The fractal concept was presented for the first time in that paper and has been applied to many fields ever since.According to the fractal theory and conditions of fractal research of coastline,the controls of faults and biologic function on the fractal character of coastline are preliminarily discussed on the basis of GIS in this paper.Finally,some significant conclusions are drawn:1)the faults control the basic trends of coastlines of two study areas;2)the fractal dimension of coastline of Taiwan is smaller than that of Changle-Lufent,because the faults of Taiwan more intensely control the trend and fractal dimension of the coastline;3)the larger the fractal dimension of the faults or the major faults ,the more the controlling effect of them on the trend and fractal dimension of coastline;4)the larger fractal dimension of the coastline of Changle-Lufeng indicates that the biologic function intensely shapes the coastline .In a word ,the controls of faults and biologic function on the fractal character of coastline are discussed with a case study of China in this paper,it can be seen that faults and biologic function both have influence over the trend and fractal dimension of coastline,the fractal mechanism of coastline of two study areas may be so.  相似文献   

7.
江平盆地侏罗系为一套内陆河湖相沉积,地层结构及岩性变化复杂。可分3个基本层序组,其变化特征,反映了中晚侏罗世江平盆地从扩张到萎缩时期沉积变化规律和沉积体系域变化过程,具有物源丰富、湖水浅、相变快等沉积特点,其层序地层及体系域特征与大陆边缘盆地相比有较大的差异。  相似文献   

8.
《徐霞客游记》是展现我国古代地理学家注重空间、人文、社会有机融合的伟大成果.霞客GIS是利用GIS技术优势,以原著文本、徐学研究成果与GIS时空多尺度信息表达相结合的一次探索.本文介绍了霞客GIS构建与设计的基本理念、时空描述构架、数据模型及系统功能构成.应用结果显示,该系统的建立,可望为传统的地学经典著作《徐霞客游记》搭建现代GIS展示与分析平台,以利于地学分析优势的发挥、霞客精神知识的传播、徐学研究的深入及成果的共享.  相似文献   

9.
It is my profound pleasure to be here today as an honored guest of the opening ceremonies for the Inauguration of Sino-German Joint Group of Paleontology and Geosciences. I stand before you as a member of the National Academy of Sciences of the United States of America, as a Graduate Research Professor of the University of Florida, as an Honorary Professor of Jilin University, as an Honorary Member of the Senckenberg Museum of Natural History, as a Friend of Tuebingen University,  相似文献   

10.
辽宁省位于华北地台北缘,其地质构造演化主要经历了地台基底形成(Ar-Pt1)、盖层沉积(Pt2-T2)、地台活化(T3以后)三个阶段。按成矿物质来源、成矿环境、成矿作用、矿点矿化点空间分布规律及物化探异常特征,辽宁省可划分出朝阳县小塔子—北票迷力营子、义县红石砬子—刘龙台、葫芦岛市水泉、建昌县温杖子、凌源市柏杖子、阜新县地宫—建设、浑南、浑北、盖县猫岭、辽阳田家围子—凤城弟兄山及丹东市沿江等12个金的主要矿化集中区。辽宁省今后的地质勘查工作应注意以下几点:(1)要更新找矿观念,注意寻找新类型和大型超大型矿床;(2)按区域成矿条件,选好找矿重点突破区;(3)精确地认识和了解已知矿床,坚持就矿找矿;(4)坚持“五统一”的部署原则,利用地质、地球物理及地球化学方法进行综合找矿。  相似文献   

11.
提出了建设云GIS的完整的解决方案,通过研究云平台技术的交付模式和地理信息系统的特点,结合山东省地质灾害信息管理的实际需求,开发了基于云平台的山东省地质灾害综合服务系统。针对云GIS(地理信息系统)海量的存储空间数据及丰富的信息显示的特点,对地质灾害点数据进行高速处理和实时显示,文中设计了系统的建设方案,在云平台的架构设计基础上,设计并实现了对山东省地质灾害信息点的管理、查询、科普、统计等需求,实现了基于云平台技术的山东省地质灾害综合服务系统的开发。  相似文献   

12.
Based on the data of resources,environment and foundation of production,applying principal compo-nents-clustering quantitative analysis,this article divides the maritime space of Changshan Islands into three regions of agricultural-pasturalization,providing a scientific basis for the rational distribution of marine cultivation.The three re-gions are as follows:1)The region of an agricultural-pasturalization in the northern part of maritime space.It includes Da Wangjia and Shicheng islans.The main production is cultivation of prawn and mollusks in sea beach,float raft culture of mussel in shallow sea and scallop ,and breeding of sea cucumber in submarine.2)The region of agricultur-al-pasturalization in the middle western part of maritime space.It includes Da Changshan and Guanglu islands and west-ern part of Xiao Chengshan Island.The man production is folat raft culture of mussel and scallop in shallow sea,and breed-ing of sea cucumber in submarine.3)The region of agricultural-pasturlization of the southeastem part of maritime space.It includes the eastern part of Xiao Chan Island,Haiyang and Zhangzi islands.The main production is breeding of abalone,sea cucumber,algaes and fish.  相似文献   

13.
纯天然的土地和已投入人类劳动的土地都具有价格。土地价格是由土地总价值所决定的 ,土地总价值包括土地等效价值和土地劳动价值。土地等效价值决定土地物质价格 ,土地劳动价值决定土地资本价格。土地收益、供求关系、效用和稀缺程度等是土地价格的重要影响因素。  相似文献   

14.
近岸海域环境恶化已成为明显的事实.从污染物的种类和含量上看,这和沿海地区经济结构的变化有很大的关系.本文先用理论的分析方法,从影响近岸海域环境的因素和经济-环境投入产出表及模型的不同角度论证了沿海地区经济结构与近岸海域环境之间存在很大的相关性;然后运用实证的分析方法,从全国沿海县(市、区)和广东省沿海城市不同范围上论证了沿海地区经济结构与近岸海域环境之间也存在很大的相关性.  相似文献   

15.
本文确定了黄土中古土壤有四种双层淀积类型。第一和第二种是由两层CaCO3结核构成的,第三种是由CaCO3和CaSO4构成的,第四种是由CaCO3与Al2O3、Fe2O3构成的。根据CaCO3淀积层成因分析得知,西安附近第一层古土壤具二元发生特点。该层古土壤上部的CaCO3淀积层代表碱性土壤发育时期。下部的CaCO3淀积层代表中酸性土壤发育时期。因为有些古土壤发育时出现过气候变化,所以具CaCO3淀积层的古土壤不一定是碱性的。具CaCO3与Fe2O3·Al2O3构成的双层淀积是酸性土壤的标志。  相似文献   

16.
发表权本质上是作者控制自己作品公开的权利,表现为作者对作品发表这一行为和状态的控制力,它具有独立存在的价值.发表权并不是著作财产权或者兼有人身权与财产权的双重属性,它只能是著作人身权.发表权的特点是发表权所具有而其他著作人身权没有的属性.“一次用尽”、“不能转移”、“区别其它著作人身权的显著性”难以成为发表权的特点.发表权的基本特点应着眼于发表权的内容、保护期限、行使主体和方式的特殊性.在作品发表之前作者对一篇作品的发表权可以多次和多种方式行使,在会议上宣读论文也是发表权的行使方式  相似文献   

17.
按新颁国家标准GB/T-13201-91中规定的稳定度分类法,统计了成都近十年的大气稳定度频率,研究了其分布特点和变化规律,并探讨了变化原因。对新标准中的日夜分界及δ取值法提出了相应的建议和简化意见  相似文献   

18.
针对风机设备安全运输的道路智能化设计需求,建立了一种综合考虑风电场多维复杂地形环境的道路中心线规划网络模型,在此基础之上设计实现了顾及风电工程建设成本的道路中心线自动规划算法;同时分析计算了风电专题中风机设备的形态结构等参数特征对道路横断面宽度的影响,以实现多要素联合约束的风电场道路优化设计。突破了传统道路设计主要依托CAD辅助制图技术在多维空间整体表达上的局限性,实现了风电场道路的三维实景信息的完备表达。以两种不同地貌类型的风电场为例,验证了方法的实用性和有效性。  相似文献   

19.
MANDELBROT enunciated the uncertainty of the length of a coastline in his paper “How long is the coastline of Britain?” published in Science in 1967. The fractal concept was presented for the first time in that paper and has been applied to many fields ever since. Although fractal dimensions of lots of phenomena were calculated by the box-counting method, the quantitative influence of series of square grids on them is ignored. The issue is systematically discussed as a case study of the mountains of China‘s Mainland in this paper. And some significant conclusions are drawn as follows: 1) Although the fractal character objectively exists in the mountains of China‘s Mainland, and it does not vary with the changes of series of square grids, the fractal dimensions of the mountains of China‘s Mainland are different with these changes. 2) The fractal dimensions of the mountains of China‘s Mainlandvary with the average lengths of sides of series of square grids. The fractal dimension of the mountains of China‘s Mainland is the function of the average length of side of square grid. They conform to the formula D=f(r) (where D is the fractal dimension, and r is the average length of side of square grid). 3) Different dots of data collection can affect the fractal dimension of the mountains of China‘s Mainland. 4) The same range of length of side of square grid and dots of data collection can ensure the comparison of fractal dimensions of the mountains of China‘ s Mainland. The research is helpful to get the more understanding of fractal and fractal dimension, and ensure that the fractal studies would be scientific.  相似文献   

20.
利用常规气象资料、地闪及TRMM卫星等资料,运用统计和对比的分析方法,对四川“9.23”雷暴过程中地闪的时空演变特征及其与降水结构的关系进行了研究分析。结果表明:沿副高边缘移动的“9.23”雷暴过程主要发生在川西高原以东地区,地闪空间分布集中连续,且主要以双单体雷暴系统的形式出现。处于雷暴系统或单体中心的地面站其地闪频数的峰值提前或同时与降水量峰值出现;而处于雷暴系统或单体边缘的地面站其地闪频数的峰值则更易滞后于降水量峰值。地闪的发生与雷暴云中的水成物粒子的分布状态都有直接的关联性,负地闪放电主要源于雷暴系统中较低的云水及可降水强中心区域,而正地闪放电则源于较高的云冰强中心的边缘处。  相似文献   

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