Scope of Earth Science Frontiers

Earth Science Frontiersis a bi-monthly publication in Chinesewith English abstracts for most papers ;a few articles are publishedentirelyin English.It is a mediumfor the publication of original andforefront research and high quality reviews covering recent advancesin all fields of Earth Sciences .Eachissue is devoted to a single topicand edited by an authorityin that field .Scope of Earth Science Frontiers…     

Scope of Earth Science Frontiers

Earth Science Frontiers is a bi-monthly publication in Chinese with English abstracts for most papers; a few articles are published entirely in English. It is a medium for the publication of original and forefront research and high quality reviews covering recent advances in all fields of Earth Sciences. Each issue is devoted to a single topic and edited by an authority in that field.     

Scope of Earth Science Frontiers

<正>Earth Science Frontiers is a bi-monthly publication in Chinese with English abstracts for most papers; a few articles are published entirely in English. It is a medium for the publication of original and forefront research and high quality reviews covering recent advances in all fields of Earth Sciences. Each issue is devoted to a single topic and edited by an authority in that field.     

Scope of Earth Science Frontiers

Earth Science Frontiersis a bi-monthly publication in Chinesewith English abstracts for most papers ;a few articles are publishedentirelyin English.It is a mediumfor the publication of original andforefront research and high quality reviews covering recent advancesin all fields of Earth Sciences .Eachissue is devoted to a single topicand edited by an authorityin that field .Scope of Earth Science Frontiers…     

Scope of Earth Science Frontiers

Earth Science Frontiers is a bi-monthly publication in Chinese with English abstracts for most papers; a few articles are published entirely in English. It is a medium for the publication of original and forefront research and high quality reviews covering recent advances in all fields of Earth Sciences. Each issue is devoted to a single topic and edited by an authority in that field.     

流体地球科学与地球系统科学

近年来,地球系统科学逐渐成为地球科学的新趋势,但固体地球科学尚难于融入其中。其根本原因在于地球系统科学属于系统科学或复杂科学的组成部分,而固体地球科学其本质上属于理想科学的范畴,以研究线性地球过程为主,或者以理想科学的手法研究非线性地球过程。流体地球科学不仅研究地球的流体系统,也研究流体系统与固体系统的强和弱相互作用,是固体地球科学融入地球系统科学的唯一途径。     

Digital Element Earth

The resources and environmental problems are the two most fundamental issues facing all nations in the world. Everything in and on the Earth – minerals, animals and plants – is made from one, or generally some combination of, chemical elements, which are scientifically listed in the periodic table. Thus it is important to understand the present abundance and spatial distribution of all the elements across the Earth’s surface. Such kinds of data can only be obtained at present and for the foreseeable future by on-earth geochemical mapping at all scales. The 30-year efforts made by Chinese geochemists in carrying out multi-element, multi-media, multi-scale geochemical mapping projects to delineate 39–76 element distribution at home and abroad culminated in a successful case of high-quality geochemical data acquirement. The new idea for a four-level plan for global geochemical mapping was advanced to obtain global data in the foreseeable future and the collection of updated geochemical information. Such information needs to be easily accessible not only by the science community, but also by industry, agriculture, governments, and even individuals, by all who would make an effort to promote sustainable living on our planet. The concept of a Digital Element Earth (DEE) fulfills the aims.     

The underdetermined Earth

In the endeavour to achieve the goal of understanding the structure of the Earth in three dimensions, the limitations of the seismological probe for Earth structure have to be recognised. In geo-seismology there are high quality observations of a wide range of information on the seismic wavefield but only at a limited number of observation points around the globe. In contrast for the Sun, the other body for which seismological techniques have been routinely applied, there is the equivalent of a very high concentration of seismometers on one-hemisphere but very limited data quality. The restriction imposed by data quality is easily recognised but the restrictions imposed by the limited sampling of the globe are more subtle and have to be borne in mind in the interpretation of any images of seismic structure. A wide range of studies has demonstrated the presence of heterogeneity in Earth-structure on a wide range of scales from planet-wide variations in the degree 2 spherical harmonics to the intensity of variations on the micro-scale in intensely deformed rock belts. Whatever scale of structure is being examined, the potential influence of other classes of heterogeneity has to be recognised and so an effort made to minimise the transfer of information from different scales which may contaminate the picture. An important class of questions which must be faced in the development of threedimensional models is the nature of the reference model (or group of models) from which the model is to be derived, and also whether it is likely that limitations in the starting state will map into final images of structure. Further, are the various classes of data being used, compatible within the class of models which is being imposed?     

风化壳离子吸附型稀土矿稀土浸出工业指标的意义

一直以来,风化壳型稀土矿床均以全相品位来圈定矿体,计算全相储量。而矿山实际生产长期以来是用浸出稀土品位及其总量为依据。在用浸出品位作为基本分析项目时,其分析成本仅有原全相分析的四分之一,且分析周期、普查周期亦大大缩短。同时选取合适的组合样求取浸出率可以求出全相储量,为国家提供稀土总量数据。总之,浸出工业指标比全相分析指标更能反映采选工艺的进步,保证充分利用资源,又能提供二种合理的储量。缩短资源评价周期。节约资源评价费用,是一种经济适用的工业指标,具有一定的参考价值。