非传统矿产资源体系及其关键科学问题   总被引：15，自引：0，他引：15  

赵鹏大  陈建平 《地球科学进展》2000,15(3):251-255

阐述了21世纪非传统矿产资源发现与开发研究的重要性和意义,在介绍了非传统矿产资源有关的国内外研究现状的基础上,阐述了非传统矿产资源研究的关键科学问题和非传统矿产资源体系的基本框架。非传统矿产资源体系包括非传统矿产—非传统方法—非传统矿业—非传统矿产经济四个方面。目前非传统矿产资源发现与开发研究亟待解决的关键科学问题主要包括:①地球演化及地球浅层作用过程中地质异常形成、演化、致矿机制;②成矿多样性、矿床谱系与新型矿产资源的发现;③矿产资源物质流及其最有效利用理论及模式研究等。  相似文献   

中国大陆科学钻探主孔榴辉岩的分类及测井识别   总被引：1，自引：0，他引：1  

景建恩  魏文博  金胜  叶高峰  邓明 《地球科学》2007,32(4):504-510

榴辉岩是中国大陆科学钻探主孔的主要岩性之一, 分布在3245m之上.根据测井响应特征, 如自然伽玛、密度、中子孔隙度等, 可以很好地区分榴辉岩与主孔的其他岩类.由于主孔榴辉岩具有不同的矿物成分、全岩化学成分和测井响应特征, 这为进一步详细划分榴辉岩亚类奠定了基础.从原岩的起源、氧化物含量、次要矿物等3个角度对主孔榴辉岩进行分类, 研究了基于多元统计学的榴辉岩亚类的测井识别方法; 利用该方法对重构的11种榴辉岩亚类进行测井评价, 将可以利用测井资料识别的榴辉岩亚类归并为6种; 根据对榴辉岩亚类的识别结果, 将主孔中榴辉岩划分为20个层段, 分析了各种榴辉岩亚类在主孔中的深度分布特征, 为地学研究提供了资料.   相似文献   

对地震地下流体学科研究与发展问题的思考     

王吉易  宋贯一  平建军  范雪芳 《地震》2002,22(4):140-148

依据地下流体存在趋势性异常和短临异常的基本观测事实, 提出“应力-应变效应说与水诱发异常说并重”的地下流体地震预报研究的科学思路。按照这一思路, 对地震地下流体观测的布网与选井原则提出了新的补充意见; 认为降水及其相关的地表水、地下水及大范围抽水等是地形变、地应变、地应力、水化及地电阻率等多种前兆异常产生的调制与诱发因素, 因而需要对原来的干扰因素的内涵作修正; 对地下流体前兆异常做了新定义及主要特征的归纳; 对于今后的工作, 提出了加强对地下流体短临前兆异常重现性的研究、加强对浅层地下流体的调制与诱发作用的研究以及积极促进地震地下流体学与其他相关学科的交叉与融合等建议。  相似文献   

论文摘要编写方法及我国地学科技论文摘要编写存在的主要问题   总被引：1，自引：0，他引：1  

韦复才 《中国岩溶》2005,24(3):255-259

在简要介绍科技论文摘要概念及编写方法的基础上,以国标GB6447- 86和GB7713- 87为尺度,对我国有代表性的39种地学科技期刊390篇论文摘要进行了审读分析。结果表明,我国地学科技论文摘要编写中主要存在有摘要类型误选、摘要无实质性内容、篇幅过长或过短、摘要含有自我评价内容和使用非第三人称写法5个方面问题,其中又以摘要类型误选和摘要无实质性内容最为常见,分别占统计数的39%和36%。上述问题主要是由于人们对GB6447- 86和GB7713- 87不够了解及对摘要编写不重视所引起。   相似文献   

Identification and prioritization of uncertainties for management of Eastern Atlantic bluefin tuna (Thunnus thynnus)     

《Marine Policy》2014

In recent decades there has been steady progress towards a risk-based management approach for fisheries. An important first step in a risk analysis framework is scoping to identify, describe and catalog the sources of uncertainty that might have an impact on a fishery. This paper introduces a methodology based on a range of tools to formalize the process of elicitation of uncertainties, from both experts and stakeholders, for the International Commission for the Conservation of Atlantic Tunas (ICCAT). ICCAT is a regional fisheries management organization responsible for the conservation of tunas and other highly migratory fish in the Atlantic Ocean and its adjacent seas. The aim of the elicitation was to identify and prioritize uncertainties for inclusion in Operating Models for Management Strategy Evaluation (MSE). The tool presented in this paper supports the qualitative prioritization of uncertainties, while also visualizing the degree of consensus among stakeholders on particular issues. Perceptions of uncertainty in fisheries often vary widely among scientists, industry and other interest groups, so tools that can facilitate inclusion and representation of different opinions are useful where decision-making depends on broad agreement and more generally, where effective management depends on commitment from stakeholders.  相似文献   

2013年国土资源科技成果统计分析     

于海跃  陈成  张丹凤 《国土资源情报》2014,(5):43-45

本文对2013年在国土资源部科技成果管理办公室登记的科技成果进行了系统总结,从成果来源、类别、评价方式、评价水平、完成单位、完成人员、经费投入和成果应用情况8个方面介绍了国土资源科技成果基本情况,并针对目前国土资源科技成果登记、推广应用和共享方面存在的问题,提出了对策建议。  相似文献   

Who participates in the Intergovernmental Panel on Climate Change and why: A quantitative assessment of the national representation of authors in the Intergovernmental Panel on Climate Change     

Claudia Ho-Lem  Hisham Zerriffi  Milind Kandlikar 《Global Environmental Change》2011,21(4):1308-1317

This paper presents a quantitative analysis of international representation in the activities of the Intergovernmental Panel on Climate Change using expert authorship counts by country in each of the four IPCC assessment reports (1990, 1995, 2001 and 2007). Overall, we find that 45% of countries, all Non-Annex 1, have never had authors participate in the IPCC process; on the other hand, European and North American experts are make up more than 75% of all authors (N = 4394). Generalized linear models using negative binomial regression were used to quantitatively estimate the effect of a number of socio-economic, environmental and procedural factors influencing country-level participation in the IPCC. Per capita gross domestic product, population, English-speaking status, and levels of tertiary education were all found to be statistically significant drivers of authorship counts. In particular, participation by authors from English-speaking Non-Annex 1 countries is 2.5 times greater than those that are non-English speaking. Regionally small island nations of Oceania were the most severely under-represented group. South American and Asian countries had fewer authors, and African countries had more authors than what might be expected on the basis of demographic and socio-economic data. These differences across nations partly reflect existing scientific capacity that will be slow to change. However, the on-going under-representation of developing country scientists in the IPCC, particularly in the assessment of climate science (WGI) and climate mitigation (WGIII) warrants greater efforts to close the capacity gap.  相似文献   

过汶川地震主断裂科学钻WFSD-1反射地震采集方法研究   总被引：1，自引：1，他引：0       下载免费PDF全文

陈强  钱荣毅  常锁亮  姜枚  张贵宾 《地球物理学报》2011,54(8):2060-2071

横穿龙门山地震反射剖面系列探测是WFSD工程中的一项重要研究内容.通过WFSD-1先导孔区二维反射地震的观测方法研究和试验,实现了预期目标:(1)在震后恶劣的天气、陡峭地形和地表严重破裂、破碎、滑塌等困难条件下,获得了WFSD工程首条分辨率较高的二维反射地震剖面;(2)从地学研究目的出发,结合龙门山地区的复杂地震地质条...  相似文献   

Multi-stakeholder perspectives on the use and influence of “grey” scientific information in fisheries management     

Suzuette S. Soomai  Peter G. Wells  Bertrum H. MacDonald 《Marine Policy》2011

Scientific information on the shrimp and groundfish resources of the Brazil–Guianas continental shelf has been produced by the United Nations Food and Agriculture Organization (FAO) and the Caribbean Regional Fisheries Mechanism (CRFM), in collaboration with the national governments exploiting the resources, since the early 1970s. In spite of the availability of such information, largely as grey literature, there is limited evidence as to the extent it is being used in fisheries management in Trinidad and Tobago. The flow of information between multiple stakeholders − fishing industry, scientists, fisheries managers, policy makers, and fisheries advisory bodies − was studied based on responses to a survey of key individuals to document each of their roles in the creation, distribution, and use of fisheries information. Content analysis of responses was completed to determine the opportunities and barriers for using scientific information in fisheries management. Salience, credibility, and legitimacy of the information were shadowed by barriers that decreased these attributes. Knowledge about the fishery has increased and technical capabilities have been strengthened through research. At the same time, advances in digital technology have made information more accessible. Yet, the high technical content of fisheries information reduced its usefulness to some stakeholders and formal systems do not exist for distributing or measuring the use and influence of such information in decision making. Communication strategies to promote awareness of the scientific information and aligning scientific information with fisheries policy could increase its use and influence. Institutional support for partnerships and education to encourage stakeholder involvement could also facilitate increased influence of scientific information.  相似文献   

3维GIS技术进展   总被引：1，自引：0，他引：1  

朱庆 《地理信息世界》2011,9(2):25-27,33

从基本概念、应用需求和技术动态等方面就3维GIS技术的发展与演进进行了简要评述.强调了专业化与大众化两种应用对3维GIS提出的不同挑战.  相似文献