草河群区域变质带及石榴石的研究

辽东草河群由北向南,可以分出比较完整的中压型巴罗式变质带、变质带的分界线或等变质度线和面基本上与地槽褶皱的构造方向一致,显示出带型区域变质作用和复合变质作用的特点。区域变质相带的矿物共生组合、斜长石号码、岩石类型、矿物的物理化学性质都具独自的特征。变质相带的变泥质岩石中的石榴石均属铁铝榴石,随变质度的增高,石榴石成分中的Al2O3、MgO、FeO Fe2O3含量增加,CaO、MnO含量降低。     

梯级水库运行期设计洪水理论和方法

人类活动和气候变化显著地改变了河川径流及洪水的时空分配过程，直接影响下游断面的设计洪水。本文综述水库对下游水文情势的影响，提出梯级水库运行期设计洪水理论方法和研究内容；重点探讨非一致性洪水频率分析和基于Copula函数的最可能地区洪水组成法，比较各种方法的实用性；推荐采用运行期设计洪水及汛控水位指导水库调度运行，建议进一步加强水库运行期设计洪水计算理论和方法研究。     

A note on some early radiosonde temperature observations in the Antarctic lower stratosphere

The behaviour of the Southern Hemisphere stratosphere has attracted considerable interest, and been compared with the Northern Hemisphere, since the International Geophysical Year (1957–58) when the sudden (explosive or accelerated) springtime warming phenomenon in the Antarctic was first observed. Over the years studies of upper air temperature and wind observations have been made, principally through the spring months when the polar vortex breakdown occurs, utilising both ground-based (rawinsonde, rocket) and more recently, satellite-derived data. Although the radiosonde-derived temperature data are limited both by the number of reporting stations, and the practical difficulty of securing observations much above the 100 hPa level, useful records exist from 1956 or 1957. These have shown that in the 1959 southern spring, the lower stratosphere was relatively colder, and the warming rate through the season was essentially more regular, with little evidence of the marked but short-lived temperature fluctuations usually found. Similar, but not quite such wide-spread conditions occurred again in the 1961 spring. In another study, 30 hPa temperature fields over the Antarctic continent, which could be drawn for the 1967 spring, showed the complexity of the polar vortex breakdown. These features are recalled because extension of the 100 hPa springtime temperature series for the Australian Antarctic station at Casey (66.3°S, 110.5°E) shows that in 1985 and part of 1986, the temperature behaviour there was similar to, but not quite so extreme as that which occurred at Mirny (66.5°S, 93.0°E) in 1959.     

CHINA''S REGIONAL DEVELOPMENT IN THE 1980s

l.Introducti0nIntheseveraldecadestilltheendofthe1970s,therewasnoanyleastd0ubtthatChinahadbeenfollOwingabalancedregi0naldevelopmentstrategy.0bligedtotlledolnesticandinternationalsituationofthattime,capitalinvestlnentxvasn1ost1yf0rcedt0beputintotheundevel0pedarea(westeconomiczone),thisstrategyprovedtobelesseffectiveandincurredahugelossofinvestmentbenefit.Althoughthewestzoneisabundantinnatllralresources(mineral,energyresourcesetc.),thelevelofregionaldevel0pmentfromeastzonet0westzoneisgradua1lydec…     

ECONOMIC COOPERATION BETWEEN CHINA AND PAN-PACIFIC COUNTRIES:IMPLICATIONS FOR ECONOMIC AND REGIONAL DEVELOPMENT OF CHINA

1ntroductionSincel978ChinaembarkedonitsmodemiZaionprogramadopingtheopnDoorPOliCy.Sincethen,cooperationbe~nChinaandtheho-forificcountriesews)havebeenintensifiedandextensified.Noonlybilateraltradeactivitieshavebeenburgeoning,therehasalsobeenPhenomenatgrOWthinthedirectinvestmentineachothefseconomy.Besides,therehasbeenemergingsomenewtypesofmultinationalcoopefationtopromOtefullexploitationofmralandhumanresourcesandtoutilizeeachOther'scomParativeadvantags.TwoPedicularareaswhichmaybelookedaspoe…     

区域化探资料在提高农作物产量上的应用成果

1991年,利用冀东地区已有1:20万区域化探资料,进行了在农业中的开发应用研究,在此基础上,选择区内微量营养元素和有益元素缺乏区,开展了增施微量元素Zn、Mn、Mo、B和Co肥料提高水稻、玉米、花生和苹果产量的应用研究。试验结果表明,增施微肥后,水稻、玉米、花生产量提高,平均增产10%以上,亩增收入平均40元以上,苹果增产30%以上,亩增收入大于1000元,增产效果和经济效益是明显的。这项成果如在整个冀东地区推广,其经济效益将是巨大的。     

成矿模式研究的几个问题

成矿模式是当代矿床学研究的重要内容和发展方向，是矿床地质科学在描述性基础上发展到高度理论性的必然产物。成矿模式是在区域成矿学研究和典型矿床研究的基础上建立的，它不仅有助于人们深化对矿床特征和矿床成因的认识，而且对矿产预测和勘查工作具有日益重要的指导作用。作者根据成矿模式的概念和研究成果，提出了新的矿床分类设想，并就成矿模式与成矿系列的关系等问题进行了有益的探讨。     

Blockage of regional seismic waves by the Teisseyre-Tornquist zone

During the Group of Scientific Experts Technical Test (GSETT, second experiment, 22 April-2 June 1991), several hundred seismic events were located in Europe. Associating these events with the detecting stations-altogether 28 European stations including seven arrays participated in the GSETT-2 experiment-clearly shows that the Teisseyre-Tornquist Zone (TTZ) influences the propagation of regional seismic phases. Large explosions in the Bay of Gdańsk, for example, were observed by the well-established Scandinavian arrays'NORSAR (Δ 830km) and ARCESS (Δ 1650km), but not by the Polish station KSP (Δ 470km) nor by the new highly sensitive GERESS array (Δ 750km), both situated south-west of the TTZ. For events in central Europe with comparable magnitudes, we observe a similar increase of the detection threshold at stations located north-east of the TTZ in Scandinavia. to explain these observations, the wave propagation of P_n and P_g perpendicular to the TTZ was modelled for a profile from the Estonian/Russian border region to GERESS with Gaussian-beam seismograms. Published crustal and uppermost mantle models for Poland and for Europe were used as a starting point for developing a model of the TTZ. the observations cannot be explained only by a graben-like crustal structure with a jump in Moho depth from 30km to 50km. to defocus the seismic energy, the TTZ as a structural anomaly between eastern and western Europe must reach down into the upper mantle to a depth of at least about 200 km. the proposed model has such a deep-reaching root of the TTZ.     

全球增暖下我国旱涝灾害可能情景的初步研究

在全球变暖的情况下,我国东南沿海、西南、西北、内蒙古和东北部分地区,洪涝灾害可能增加;而黄河中游以南和华北平原干旱可能增加.这一变化特征与本世纪暖期降水分布变化,以及与CO_2倍增情况下气候模似结果基本一致.