中国能源安全与南海开发   总被引：2，自引：0，他引：2  

于文金  朱大奎 《世界地理研究》2006,15(4):11-16

二十一世纪是海洋经济时代。随着我国经济的发展,能源问题日益突出。由于我国陆上石油资源日益枯竭,海上石油开发成为我国能源的战略重点。南海陆架新生代地层厚约2000～3000m。第三纪沉积有海相、陆相及海陆交互相,具有良好的生油和储油岩系。南海扼海上要冲-马六甲海峡,南海航线是我国能源的海上生命线,具有不可替代的战略地位。我国南海资源和海域主权遭受到极大的侵犯。发展深海油气的勘探和开发技术,开发我国的南海深水石油资源,维护我国海域主权已经刻不容缓。优先进行南海石油开发是破解我国石油能源困局的必选战略。  相似文献   

Organizational Dynamics of the U.S. Logistics Industry: An Economic Geography Perspective*     

Yuko Aoyama  Samuel Ratick  Guido Schwarz 《The Professional geographer》2006,58(3):327-340

Although the logistics industry provides critical services to all sectors of the economy, few studies exist in economic geography that examine and explain the organizational dynamics of this industry. This article highlights the significance of the logistics industry in contemporary industrialization and argues that an enriched understanding of the interaction between technology and space can be achieved by examining the evolution of an industry that plays a central role in the contemporary economy. We focus on dimensions that are identified as particularly important: organizational, geographic, and risk and security.  相似文献   

基于LSB的遥感图像安全传输模型     

闵连权 《测绘工程》2005,14(1):11-14

互联网在方便人们交流、共享信息的同时,也带来了极大的安全问题.信息隐藏是解决信息安全的一种有效手段,研究采用LSB法实现重要目标遥感图像信息的隐藏,实验证明该方法可以有效地解决网上图像传输出现的安全问题.  相似文献   

盐城凹陷朱家墩气田综合化探异常及其地质意义   总被引：1，自引：1，他引：1  

王国建  邓平  石美癸 《物探与化探》2005,29(2):131-134

用酸解烃、顶空气、吸附丝及甲烷碳同位素方法对盐城凹陷朱家墩气田进行了综合油气化探测量,建立了该区这几种方法指标的化探异常模式,在总结已知油气区异常规律的基础上,优化化探方法及指标组合并运用于未知区域,圈定了油气远景靶区。探讨了地表化探异常与石油地质特征的关系,为化探异常的地质解释提供了可借鉴的思路。  相似文献   

油气成藏机理研究进展和前沿研究领域   总被引：23，自引：7，他引：23  

郝芳  邹华耀  王敏芳  杨旭升 《地质科技情报》2002,21(4):7-14

随着地质工作者刻划和认识地下地质体构成、结构的能力及研究和预测沉积盆地能量场（温度场、压力场和应力场）及其演化能力的不断提高，以流体流动和油气运移为核心的油气成藏机理研究取得了重要进展：（1）证实了油气的优势通道运移并妆步提示了优势运移通道的微观和宏观控制机制，从而使基于油气运移路径三维预测的油气藏定位预测成为可能；（2）证实了幕式快速成藏过程并初步揭示了幕式成藏的驱动机制、有利场所和地球化学识别标志，突破了油气成藏是一个缓慢渗流过程的传统模式；（3）深盆气勘探和成藏机理研究取得了进展，从而突破了背斜成藏的传统观念，使“向斜”（盆地凹陷区）成为一些盆地寻找大型天然气藏的重要场所。沉积盆地深层油气成藏过程和保存条件、活动构造背景下油气晚期快速成藏过程是油气成藏机理研究的重要前沿研究领域。  相似文献   

低温电镀孕镶金刚石石油取心钻头研制与应用     

李大佛  李天明等 《地球科学》2002,27(1):120-126

该钻头用于坚硬地层取心。河南油田以往常用园柱聚晶、三角聚晶钻头以及烧结孕镶金刚石钻头，取心效率低、钻速慢、成本高。近两年采用低温电镀孕镶金刚石钻头取心后，平均单筒进尺由原来的4．20m／筒提高到7．62m/筒，平均取心机械钻速由原来的0．21m/h提高到的0.84m/h。该钻头生产工艺完全改变原来高温（1000℃以上）烧结为低温（室温）电镀工艺，极大地避免了金刚石热损伤，采用高强度大颗粒的金刚石，提高了取心机械钻速。  相似文献   

Division of Gas Accumulation System and Laws Controlling Distribution of Natural Gas in Typical Petroliferous Basins of China     

JIANG Zhenxue  Pang Xiongqi  Jin Zhijun  Chen Dongxia 《中国地质大学学报(英文版)》2002,13(4)

Considering the existing problems of the petroleum system, this paper brings forward the concept of natural gas accumulation system and presents the dividing principles. Then detailed statistics on the accumulation factors of the 32 typical natural gas accumulation systems in China and studies on the laws controlling distribution of gas are collected. The research shows that the petroleum accumulation system is the basic unit controlling petroleum generation, migration and accumulation. Generating intensity, generating amount, accumulating efficiency and migration distance plays an important role in the distribution of natural gas. Through analysis on results of resources evaluation, discovered reserves and residual reserves, potential areas in middle-scaled petroliferous basins in China are forecasted in this paper. Ordos, Sichuan, Tarim and Qaidam basins are found out to be the main basins developing and enriching gas accumulation systems.  相似文献   

Soil degradation: a global problem endangering sustainable development   总被引：4，自引：0，他引：4  

CHEN Jie  CHEN Jing-zhang  TAN Man-zhi  GONG Zi-tong 《地理学报(英文版)》2002,12(2):243-252

1 Introduction Soil is not only the major natural resource on which human being depends for the production of food, feed, fiber, renewable energy and raw materials, but also plays a key role in maintaining the complex terrestrial ecosystems and climate systems of this planet. Recent rapid increase in the human population is placing a great strain on the worlds soil resources. Only about 11% of the global land surface covered by the soils are being used to raise crops and livestock, in other …  相似文献   

Research progress of socio-economic water cycle in China   总被引：3，自引：0，他引：3  

Jia Shao-feng  Wang Guo  Zhang Shi-feng  Yu Gui-rui  Wang Jin-xia  Xia Jun 《地理学报(英文版)》2002,12(1):114-120

China has made great progress in the study of socio-economic water cycle. She has completed national water resources appraisement and medium to long-term water supply planning. She has been engaging in study on water-deficient regions in North China and Northwest China for about half a century. For solving water shortage problem in northern China, she has put forward the famous South-to-North Water Transferring Projects, which has been set as one of the four biggest national projects in the Tenth Five-Year-Plan period although there are still debates. For promoting water use efficiency, China has been reforming her water management system, including water right system and water price system. There has already been a case of water right purchase. China has also done a lot of research on the interaction between human activity, water and ecosystem. For meeting the need of sustainability and coordinating water resources development and environmental protection, the study of ecological water requirement became very hot in recent years. There are three focuses of socio-economic water cycle study now in China: water transfer projects from the south to the north, water resources management and ecological water requirement.  相似文献   

Transport and Housing Security in the Klang Valley, Malaysia     

Paul Barter 《Singapore journal of tropical geography》2002,23(3):268-287

This paper explores links between transport and housing security issues for the urban poor using the example of the Klang Valley in Malaysia. The interface between these issues is identified as a gap in the literature, including policy debates, on both housing and transport. A number of linkages are shown to be important and likely to be relevant in many cities of the South, especially those with rapid motorisation and large numbers of "squatters". A simple framework for understanding these linkages is presented. Key examples include displacement to make way for transport infrastructure and the impact on transport problems for the poor of policies affecting the location of urban poor housing, including relocation sites and transit accommodation. The case study of the Klang Valley is used to illustrate and test the relevance of a focus on this issue and the utility of the conceptual framework. Some policy implications of the investigation and case study are suggested.  相似文献