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在当今信息社会，科学技术的发展日新月异，地质科学技术的发展也随着国民经济的发展和改革开放的进一步深入而突飞猛进，地质科学与其它科学相互渗透、交叉，而产生新的学科、新的分支，地质期刊的内容也随之而不断丰富和扩展。信息专家认为：谁有效地开发利用了信息资源，谁就能在激烈的竞争中迅速占领制高点。信息产业已成为发达国家国民经济的主导，而期刊信息是整个信息资源中极为重要的组成部分，它对一个国家的科学技术的进步，社会经济的发展以及人民生活水平的提高起着不可低估的作用。 相似文献
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三角洲人地耦合关系：过去、现在与未来——香山科学会议238次学术讨论会 总被引：1，自引：0，他引：1
世界上许多著名的三角洲是人口最密集、社会经济最发达、人与自然相互作用最强烈的地区，是最具代表性的人地耦合系统。我国长江、珠江和黄河三角洲对于中国经济和社会过去现在与未来的发展具有重要的不可替代的作用。 相似文献
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矿产资源是泛指经过漫长的地质作用,在特定的条件下形成,分布于陆地和海洋、地表和地下的,可供人类开发利用的天然矿物及岩石资源。矿产资源是自然资源的一部分,是人类社会赖以生存和发展的重要物质基础。矿产资源的开发、利用在推动人类社会进步、繁荣和发展经济中起着重要的作用。 相似文献
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<正>据国家新闻出版广电总局2014年11月27日通知,中国地质学会《地质论评》常务副主编、编辑部主任章雨旭研究员等284人被评为"全国新闻出版行业第四批领军人才"。通知指出,培养造就一支德才兼备、锐意创新、结构合理、规模宏大的行业人才队伍,是推动新闻出版业由规模数量向质量效益升级,由出版大国向出版强国升级的迫切需要,对于推动新闻出版业繁荣发展,建设社会主义先进文化,具有重要而深远的意义。按照《新闻出版业"十二五"时期 相似文献
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我国地理学发展的回顾与展望--地理学:方向正在变化的科学 总被引：25，自引：2，他引：25
我国地理学自新中国成立以来取得了辉煌的成就，在跨入21世纪之时面临着一系列挑战和重大任务。我国经济和社会的迅速发展，强烈地改变了我国自然结构和社会经济结构，我国及各地区的“人－地”关系协调和可持续发展是我们面临的重大任务，地理学是实现这些国家重大任务的重要支撑科学之一，肩负着责无旁贷的重任，有着广阔的发展空间。 相似文献
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我国地质学基础研究人才战略 总被引：5，自引：0，他引：5
基于地球系统科学对地质学基础研究人才的需求, 对我国40余所高校、8个中国科学院研究所的地质学人才存量、结构、培养状况和147名国家杰出青年科学基金获得者、407名青年基金项目负责人进行了问卷调查.调查发现全国现有4418人从事地质学基础研究工作, 年龄峰值为41~45岁, 人数随年龄降低而大幅度减少; 地质类博士毕业生占全国当年博士毕业总人数的比例从1993年的8.76%下降到2003年的4.7%.研究结果表明, 我国现有青年地质学人才数量呈急剧下降趋势, 未来5~10年地质学基础研究人才远不能适应地球系统科学发展、国民经济建设和人类社会进步的需要.为了加强地质学基础研究人才队伍建设和规划, 实现从地学大国走向地学强国的战略目标, 提出了设立“国家自然科学育才基金”、创新地质学青年拔尖人才培育模式和改善人文环境等措施. 相似文献
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随着经济的发展,社会的进步,经济社会发展对人才质量的要求迅速提高,已经逐步由传统的理论性、科研型人才向技能型、专业性人才转变,而高职院校正是在这一的契机下发展壮大起来的,随着经济社会发展对专业性技能型人才水平要求的提高,高职院校开展校企合作,培养人才已经是发展的必然选择。现如今,校企合作经过多年的探究与发展,已经成为专业技能型人才培养的最重要举措之一,其所发展的作用已不言而喻。所以,在新时代发展下,科学技术的突飞猛进,院校与企业共同搭建一个包含多元化主体、资源共享、大学生顶岗实习、就业的网络化管理的信息创新平台具有重要的意义。 相似文献
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Guboglo M. N. 《GeoJournal》1980,4(1):53-58
International unity is becoming ever stronger in this country owing to an increasing similarity in the development of the cultural environment. This comprises the provision of all the country's republics with a sufficient number of schools, theatres, and other institutions and cultural information media in accordance with the needs of the population. An important part is played by the rise in ‘the general educational level, as well as the level of professional qualifications and skills. Among all the Soviet nations and nationalities, this rise being more rapid among formerly backward peoples. Prominent among the factors of internationalization is the progressive development of the nationalities’ cultural resources, while professional culture is being increasingly brought within the reach of the masses.The implementation of the nationalities policy promotes the all-round development of all Soviet nations and nationalities, their drawing together, the upsurge of the individual capabilities of every Soviet citizen. 相似文献
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Deviation of the major axis of the inertia ellipsoid of the Moon from the direction toward the Earth
B. P. Kondratyev 《Astronomy Reports》2017,61(8):709-714
It is known from observations that the center of mass of the Moon does not coincide with the geometric center of its figure, and the line connecting these two centers is not aligned with the direction toward the center of the Earth, instead deviating toward the Southeast. This stationary deviation of the axis of the inertia ellipsoid of the Moon to the South of the direction toward the Earth is analyzed. A system of five linear differential equations describing the physical libration of the Moon in latitude is considered, and these equations are derived using a new vector method taking into account perturbations from the Earth and partly from the Sun. The characteristic equation of this system is obtained, and all five oscillation frequencies are found. Special attention is paid to the fifth (zero) frequency, for which the solution of the latitude libration equations are stationary and represents a previously unknown additional motion of the rotational axis of theMoon in a cone with a small opening angle. In contrast to the astronomical precession of the Earth, the rotation of the angular-velocity vector is in the positive direction (counter-clockwise), with the period T 3 = 27.32 days. On this basis, this phenomenon has been named “quasi-precession.” This quasi-precession leads to a stationary inclination of the major axis of the inertia ellipsoid of theMoon to the South (for an observer on Earth), making it possible to explain one component of the observed deviation of the center of mass of the Moon from the direction toward the Earth. The opening angle of the quasiprecession cone is approximately 0.834″. 相似文献
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Chronological analyses of correlations between certain global repeating events (mass extinctions of marine organisms, meteorite impacts, and flashes in the frequency of geomagnetic reversals) during the Phanerozoic Eon and the motion of the solar system in the Galaxy are presented for five rotationally symmetrical models for the regular Galactic gravitational field. Thirteen of sixteen mass-extinction events can be described by a repetition interval of 183±3 million years. This is in agreement with the anomalistic period (interval between two subsequent passages of the Sun through the apocenter of its Galactic orbit) in the model of Allen and Martos. The positions of the minima and maxima in Gaussian functions approximating the frequency distribution for geomagnetic reversals also agree with the times of passage of the Sun through the apocenter and pericenter, respectively, of its Galactic orbit in this model. The maximum in the distribution of the deviations of the dates of mass extinctions from the nearest dates of impacts of large, crater-forming bodies is close to zero, providing evidence that many such events are correlated. As a rule, extinctions follow impact events. The impacts of large bodies have occurred most often when the solar system passes through the Galactic plane, while mass extinctions occur more often at some distance from the Galactic plane (about 40 pc). As a rule, intervals of increases in the frequency of geomagnetic reversals coincide with dates of impacts of large bodies. At the same time, these intervals do not show a clear correlation with the dates of mass extinctions. The intensity of mass extinctions, like the energy released by impacts, is consistently higher in periods when the Sun is moving from the apocenter toward the pericenter of its orbit, than when it is moving from the pericenter toward the apocenter. Thus, there is evidence for a variety of relationships between repeating global events in the Phanerozoic and the motion of the Sun in the Galaxy. Long-period variations in the frequency of geomagnetic reversals are correlated with the orbital motion of the Sun, and increases in the frequency of geomagnetic reversals are correlated with impacts. Mass extinctions are correlated with the impacts of large bodies, whose motions may have been perturbed by clouds of interstellar material concentrated toward the Galactic plane and by the shock front associated with the Perseus spiral arm, through which the solar system passes. The velocity of the Sun relative to the spiral pattern is estimated. 相似文献
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位于华北和扬子两板块碰撞带中的苏鲁榴辉岩形成的温压条件不但是超高压，而且是高温。榴辉岩的PTt轨迹表明其为陆-陆磁撞俯冲带的产物。榴辉岩的区域性围岩花岗质片麻岩为新元古代同碰撞期花岗岩，榴辉岩及其他直接围岩皆呈包体存在于其中，并见新元古代花岗岩呈脉状侵入榴辉岩包体中。区域性围岩新元古代花岗岩的锆石中发现有柯石英、绿辉石等包裹体，表明新元古代花岗岩的组成物质也经受过超高压变质作用，且榴辉岩与围岩新元古代花岗岩的锆石U-Pb体系同位素年龄基本相同。但新元古代花岗岩所记录的变质作用和变形作用期次（或阶段）却少于榴辉岩。椐上述可得如下推断：超高压榴辉岩与新元古代花岗岩岩浆是同时在碰撞带底部（俯冲板块前部）形成的；榴辉岩的第一折返阶段是由新元古代花岗岩岩浆携带上升的，其第二折返阶段是和新元古代花岗岩一起由逆冲及区域性隆起而上升，遭受剥蚀。 相似文献
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某高速公路下伏煤矿采空区稳定性分析 总被引：10，自引：0，他引：10
在论述某高速公路下伏砦脖煤矿采空区地质、采矿和工程地质特征的基础上, 进行了稳定性数值模拟分析, 定性与定量地分析与评价了该煤矿采空区的地表变形特征及稳定性。研究结果表明: 该煤矿采空区的变形尚未完成, 对拟建的高速公路将产生很大的危害, 必须采取相应的工程治理措施。 相似文献
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摩擦桩基桩土间极限摩阻力取值问题探讨 总被引：1，自引：0，他引：1
通过对广珠东线高速公路横沥大桥的试桩及土体的工程地质条件分析,总结出影响摩擦桩基桩土间极限摩阻力取值的一般问题以及解决问题的方法和措施。 相似文献
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The Importance of the Precipitation and the Susceptibility of the Slopes for the Triggering of Landslides Along the Roads 总被引：3，自引：1，他引：2
Clemente Irigaray Francisco Lamas Rachid El Hamdouni Tomás Fernández José Chacón 《Natural Hazards》2000,21(1):65-81
In order to characterise the influence of the heavyrains on the observed landslides during the 1996–1997hydrological cycle, rainfall records for the last 100years are analysed from 104 stations in easternAndalusia. Regarding the amounts of rain recordedbetween October 1996 and March 1997 in the 104stations studied, 31 presented new all-time records;15 presented values that were 80–100% of thepre-1995 record; 49 stations, 80–50%; and 9stations, < 50%. A map has been devised of thesusceptibility of the materials through which thesouth-eastern Andalusian road network crosses,together with an inventory of the damage caused byinstability phenomena on banks and cuttings of theroad network during the winter of 1996–1997. Therelationships between the rainfall during the studyperiod, the damage caused to the road network and thesusceptibility of the materials affected are analysed.The results indicate that there is a clearcorrespondence between the rainfall recorded and thesusceptibility of the materials with the inventorieddamage. It is concluded that the widespread seriousdamage caused in early 1997 to the roads andsurrounding areas in the Alpujarra region and thecoast of the Province of Granada was mainly caused bythe extraordinarily heavy rains. However, considerablyless damage was observed where the susceptibility ofthe terrain is low, thus highlighting the extremeusefulness of terrain-susceptibility maps for riskprevention and territorial planning. 相似文献
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The structure of the eastern Pyrenees consists mainly of south-directed thrusts involving basement and cover rocks. An antiformal stack developed by the piling up of basement thrust sheets which outcrop in the Axial zone. These structures account for a thin-skinned thrust model rather than a vertical fault model in which the Axial zone would be essentially autochthonous, and the North-Pyrenean fault the axial plane of a fan thrust system. New data from the Eastern Pyrenees and the thin-skinned model suggest that(1) the structure east of the Pedraforca nappe is similar to that of the Central Pyrenees; (2) the cover rocks of the South-Pyrenean units and of the Axial zone-after restoration—built up a northwards-thickening prism consistent with the existence of a unique Pyrenean sedimentary basin during Mesozoic time; (3) the Axial zone is only a complex antiformal stack developed as a part of South-Pyrenean system related to the Paleogene thrusting-tectonics. The Axial zone palaeogeographic area had no special meaning during Mesozoic time. 相似文献