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1.
以《地震地质》期刊为例，结合专业的特点，阐明在绘制地学期刊插图时，要注重地理要素、地质内容、图例等各类注记的规范化。编辑人员和作者要运用绘图技巧，使插图直观、明了．起到图符其文的作用。 相似文献
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谈地学期刊插图的图面设计 总被引：2，自引：2，他引：0
根据多年编辑地学期刊插图的实践,对插图的图例、线条与文字、色彩等方面的规范要求进行了描述.以使科技期刊插图的图面布局更合理、规范、美观,进一步提高出版物的阅读功能和欣赏功能. 相似文献
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一些地学科技论文写作欠规范，是编辑每天都会遇到的实际问题，纠正这些不正确、不规范之处，需要耗费编辑大量的精力。根据编辑实践，将地学论文与相关期刊中较常见的一些问题归纳出来，并提出了应对措施。 相似文献
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引言据中国科技情报研究所（１９９８）的统计资料,１９９７年我国地学论文中的国内论文达６４０１篇,而国际论文仅６０１篇（以《ＳＣＩ》、《ＩＳＴＰ》和《ＥＩ》计）,表明国内发表的论文远高于国际论文;从《中国科学》Ｄ辑等重要地学期刊看,所发表的论文多为国家自然科学基金委员会等国家资助项目产生的,其中有不少论文处于国际先进水平。因此,如何充分发挥我国地学期刊及其论文的作用,扩大国内外影响,就显得十分重要而迫切。本文将从文献之间相互引用的角度,对我国地学核心期刊的互引状况进行统计与分析,以了解我国地学研究成果交流、渗透和利用的情况,以及各地学期刊在文献交流中的位置与作用。２ 互引统计地学论文中的参考文献（引文）是联系各地学期刊的纽带,是互引分析的基础。我们根据中文核心期刊要目总览（林被甸等,１９９６）,选择了国内具有一定代表性的《中国科学》Ｄ辑、《地质学报》、《地球物理学报》等１３种地学核心期刊（表１）,利用有关文献（丁学东,１９９３;陈江洪,１９９５）的统计分析方法,将１３种期刊的互引关系用引文矩阵的形式展示出来,详见表１。表１中矩阵的行（ｉ）代表第ｉ种期刊引用列（ｊ）中第ｊ种期刊的情况。这里,ｉ,ｊ＝１,２ 相似文献
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根据最新的国家标准,对地学类期刊中关于震级的规范表示,不同震级标度的真正含义及使用规则进行了详细的解析,以期为作者和同行编辑提供参考,引起他们对专业性期刊相关的国家标准的重视。 相似文献
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《地震》2005,25(2):130-130
(据中国科技信息研究所, 中国科技期刊引证报告2004年版)序号期刊名称影响因子序号期刊名称总被引频次1 地球物理学报 1.974 1 地球物理学报 15532 地球化学 1.344 2 地球科学 10723 自然灾害学报 1.287 3 中国沙漠 9924 干旱区研究 1.252 4 地学前缘 9815 中国沙漠 1.228 5 地球化学 9296 第四纪研究 1.172 6 地震学报 8497 地震学报 1.148 7 第四纪研究 7808 地球学报 1.030 8 地球科学进展 7619 地球科学进展 0.980 9 地震地质 58810 地学前缘 0.891 … 相似文献
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《地震地质》2006,28(4):690-690
(据中国科学技术信息研究所,中国科技期刊引证报告2006年版)序号按总被引频次排名序号按影响因子排名期刊名称总被引频次期刊名称影响因子1中国沙漠19971中国沙漠1.8702地球物理学报19722地球化学1.8073地学前缘17413天然气地球科学1.5374地球科学进展15854第四纪研究1.3685地球化学13995地学前缘1.3476地球科学13906地球物理学报1.2537第四纪研究12337地球科学进展1.2458地球学报8688干旱区研究1.0799地震工程与工程振动8399大地构造与成矿学1.06510地震学报78310地球科学0.99111地球物理学进展72011灾害学0.90712天然气地球科学71312地球… 相似文献
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现代大地测量在研究相关地学问题中的作用 总被引：7，自引：2，他引：7
本文评述了用现代大地测量技术监测地球动力现象所能达到的时空辨率和准确度论述了大地测量在研究相关地学问题中的作用，回顾了以空间卫星大地测量为标志的现代大地测量近３０年来对地球科学作出的主要贡献及科学意义，并对大地测量未来进一步应用于地学研究的主要领域和研究方向提出了若干建议。 相似文献
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D. M. Pechersky A. A. Lyubushin Z. V. Sharonova 《Izvestiya Physics of the Solid Earth》2010,46(7):613-623
The data on geomagnetic reversals are compared with the changes in the organic world and with the lower-mantle plumes. The
times of the formation of plumes and the times of their appearance on the Earth’s surface relate to the intervals characterized
by the different frequencies of geomagnetic reversals, i.e., there is no interrelation between the formation of plumes and
the frequency of the changes in the geomagnetic field polarity. At the same time, a certain synchronism is observed between
the frequency of the geomagnetic reversals and the boundaries of the biostratigraphic ages, i.e., the changes in the organic
world in the long-period range. A hypothesis is proposed, which explains the change in the sign of the geomagnetic field by
the combined effect of the irregular rotation of the internal core relative to the mantle and the changes in the slope angle
of the axis of the Earth’s rotation, which, in turn, results in synchronous events on the Earth’s surface: the rates of changes
in the organic world. 相似文献
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Summary The maintenance of the axisymmetric component of the flow in the atmosphere is investigated by means of a steady-state, quasi-geostrophic formulation of the meteorological equations. It is shown that the meridional variations in the time-averaged axisymmetric variables can be expressed as the sum of three contributions, one being due to the eddy heat transport, another to the eddy momentum transport, and a third to the convective-radiative equilibrium temperature which enters the problem through the specification of a Newtonian form of diabatic heating. The contributions by the large scale eddies are evaluated through the use of observed values for the eddy heat and momentum transports.The contributions from each of the three forcing mechanisms to the temperature and zonal wind fields are invstigated individually and found to be of about equal importance. The sum of the three contributions are also presented for the temperature, the zonal wind, the stream function associated with the mean meridional circulation and the corresponding vertical motion. Although the results fail to reproduce the main observed features of the lower stratosphere, they are found to be in good agreement with observations in the middle latitude troposphere. At any pressure level, for example, the computed mean zonal wind has a jet-like profile and the axis of the jet is found to slope to the south with height, as observed in the atmosphere.Based in part on a thesis submitted by the first author as partial fulfillment of the requirements for the Ph.D. degree at the University of Michigan. — Publication No. 194 from the Department of Meteorology and Oceanography, The University of Michigan. 相似文献
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Prof. Dr. W. A. Heiskanen 《Pure and Applied Geophysics》1958,41(1):1-18
Summary The author mentions the aims of the World-wide gravity project he established in the Ohio State University in Columbus, in 1950. He outlines the practical procedure of the gravimetric computations of the undulationsN and the vertical deflection components and and emphasizes that only by the global international cooperation and additional gravity observations at sea carried out during the last decade it has been possible to gather to Columbus the needed gravity material. Since there exist still large gravimetrically unsurveyed areas it is of vital significance to study what gravity anomalies are best to be used for these regions. The given figures concerning the accuracy of theN, and , estimated theoretically and obtained in practice, indicate that in the gravimetrically well surveyed parts of the world like in Europe and the United States we can get gravimetrically on basis of existing gravity material theN-values with accuracy of about 5–10 meters, and and with the accuracy of about 1. The geoid undulationsN are already computed in Columbus for more than 6000 points of the northern hemisphere. The sample maps show the interesting geoid of Europe and vicinity between the latitudes 60° and 30° and longitude 5° W and 30° E, drafted on basis of more than 1000N-values computed at the corners of 1°×1° squares. It is interesting to realize that the geoid undulations in all this area are positive, the extreme values being between 40 and 50 meters. The geophysical significance of the geoid maps of this kind is pointed out. 相似文献
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综合APIA、HONOLULU、PAMATAI 3个地磁台三分量的11年周期变化的形态后，可定性地提出该变化源于内场。如内源为核幔边界的电涡流，则其中心点应位于3台之间。 相似文献
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V. E. Pavlov T. Yu. Tolmacheva R. V. Veselovskiy A. V. Latyshev A. M. Fetisova I. V. Bigun 《Izvestiya Physics of the Solid Earth》2017,53(5):702-713
Until recently, the existing data prevented the geophysicists from accurately dating the Bysy-Yuryakh stratum, which outcrops in the middle reach of the Kotuy River, constraining the time of its formation to a wide interval from the end of the Late Cambrian to the beginning of the Silurian. The obtained paleomagnetic data unambiguously correlate the Bysy-Yuryakh stratum to the Nyaian regional stage and constrain its formation, at least a considerable part of it, by the Tremadocian. This result perfectly agrees with the data on the Bysy-Yuryakh conodonts studied in this work and yields a spectacular example of the successful application of paleomagnetic studies in solving important tasks of stratigraphy and, correspondingly, petroleum geology. Within the Bysy-Yuryakh stratum, we revealed a large normal-polarity interval corresponding to the long (>1 Ma) period when the geomagnetic reversals were absent. This result, in combination with the data for the Tremadocian and Middle–Upper Cambrian sequences of the other regions, indicates that (1) the rate of occurrence of the geomagnetic reversals on the eve of the Ordovician Moyero superchron of reversed polarity was at most one reversal per Ma; (2) the superchron does not switch on instantaneously but is preceded by a certain gradual change in the operation conditions of the dynamo mechanism which, inter alia, manifests itself by the reduction of the frequency of geomagnetic reversals with the approach of the superchron. This finding supports the views according to which a process preparing the establishment of the superchrons takes place at the core–mantle boundary. 相似文献
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The nutations of the planets Mars andEarth are investigated and compared. Alarge number of interior structureparameters are involved in the nutationcomputations. The comparison between the observations and the computationsprovides several constraints on these parmeters andtherefore allows a better understanding of the physics of the interior of theplanet. For the Earth, the high precision of the observations of the nutationshas led to a very good determination of interior properties of the planet. ForMars, observations of nutations are not yet available, and we review how theamplitude of the Martian nutations depends on the hypotheses consideredfor its interior. Although Mars is very similar to the Earth, its interior is not well known;for example, we don't knowif its core is liquid or solid. Only if the core is liquid,the Free Core Nutation (FCN) normal mode exists and can alter the nutationswhich are close to the resonance. From the observed geoids, it is known thatboth planets are not in hydrostatic equilibrium. The departure is larger forMars than for the Earth, and consequently, the implication of considering a convective mantle instead of a mantle in hydrostatic equilibrium described byClairaut's equation for the initial equilibrium state of the planet is largeron the Martian nutations than on the Earth nutations. The consequences of theuncertainty in the core dimensions are also examined and shown to be of a veryhigh influence for Mars if the core is liquid, due to the potential changes inthe FCN resonance. The influence of the presence of an inner core, which isknown to exist for the Earth, could be more important for Mars than for theEarth if the inner core is large. Due to the presence of Tharsis on Mars, thetriaxiality of this planet has, additionally, larger effects than on Earth. 相似文献
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The global database on the paleointensity, containing determinations of the virtual dipole moment (VDM) for a stable (normal) regime of the geomagnetic field in a time interval of up to 3.5 Ga, is supplemented by new VDM determinations and analyzed. The field generation process started no later than 3–3.5 Ga (earlier data are absent) at the stage of the Earth’s core formation. Since that time, the dipole value has differed from its present value by no more than an order of magnitude, and the deviations that have already been detected tend toward smaller values. The distribution of VDM values in the time interval 0–400 Ma is bimodal, which apparently reflects the presence of two different generation levels of the geomagnetic field distinguished by a relatively large value (close to the present field value) and a relatively small value (approximately half as large as the present value). The total duration of decreased VDM values appreciably exceeds that of increased VDM values (179.1 and 28.6 Myr, respectively). On the whole, data on the paleointensity do not contradict the hypothesis about the dipole nature of the field over the last 400 Myr; however, the number of determinations at high paleolatitudes is too small to draw decisive conclusions on the validity (or invalidity) of the dipole field approximation based solely on paleointensity data. 相似文献
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Geomagnetism and Aeronomy - The evolution of the magnetic configuration in the solar corona is studied. The curvature of the K-corona helmets obtained from an analytical approximation of the... 相似文献