垂直切变基流中东西向地形对惯性重力波稳定性的影响

利用分层浅水波方程和小参数(WKB)方法，考虑具有垂直切变的基流和地形的作用，求得惯性重力波的局地频率方程，并根据此方程分析讨论了在多种环境条件下波动的稳定性情况。     

Water Resources Planning and Climate Change Assessment Methods

This paper, which provides background for other papers in the volume, first reviews the nature and development of water resources planning and evaluation criteria at the Federal level in the United States. These criteria constitute a highly developed, complex set of guidelines for project planning and evaluation. The level of development of these criteria and their long historical development from theoretical foundations must be taken into account in relating global climate change to possible changes in planning criteria. Second, the essentials of water project planning and evaluation, including benefit-cost principles and more complex concepts of social decision-making, are outlined. Third, the paper provides an overview of global climate change assessment methods, including impact assessment and integrated assessment. Impact assessment uses a relatively straightforward comparison of with and without situations; integrated assessment attempts to improve on impact assessment by developing more complex models that incorporate a range of feedbacks and interrelationships.     

APPROACH TO KARST SOLUTION PROCESS RESPONSES ON CLIMATE

ＩｎｔｒｏｄｕｃｔｉｏｎＳｏｌｕｔｉｏｎａｓａｋａｒｓｔｇｅｏｍｏｒｐｈｏｌｏｇｉｃａｌｐｒｏｃｅｓｓｉｎｌａｎｄｆｏｒｍｄｅｖｅｌｏｐｍｅｎｔｈａｓｌｏｎｇｂｅｅｎｒｅｃｏｇｎｉｚｅｄ.Ｓｉｎｃｅｔｈｅｋａｒｓｔｐｒｏｃｅｓｓｅｓａｒｅａｌｍｏｓｔｅｎｔｉｒｅｌｙｓｏｌｕｔｉｏｎ,ｔｈｏｕｇｈｋａｒｓｔｌａｎｄｆｏｒｍｓａｒｅｎｏｔｏｎｌｙｃａｕｓｅｄｂｙｓｏｌｕｔｉｏｎｂｕｔａｌｓｏｂｙｅｒｏｓｉｏｎ,ｔｈｅｃｉｒｃｕｌａｔｉｏｎａｎｄｃｈｅｍｉｃａｌｃｏｍｐｏｓｉｔｉｏｎｓｏｆｋａｒｓｔｕｎ…     

四川盆地西部富钾卤水水文地球化学特征及其成因意义探讨

四川盆地西部宫钾卤水以深层卤水形式赋存于地下４０００余ｍ的中三叠统雷口坡组四段（Ｔ２ｌ４）盐系的碳酸盐岩储层中。富钾卤水与海水不同浓缩阶段相比，其中含Ｋ＋含量异常高，构成液态钾矿资源；Ｂｒ－、Ｉ－、Ｂ（３＋）、Ｌｉ＋等稀有组分也远超过综合利用工业品位，为优质化工原料水。富钾卤水为沉积变质和钾盐溶滤的复合成因，具有固夜态找钾的指示意义。本文为四川盆地固液态找钾提供了有价值的线索。     

华北地区石炭－二叠系煤系地层和轻质油关系研究

对华北地区石炭－二叠系、下第三系、中上元古界沉积物和油样的低环萜烷参数用因子分析方法进行油源对比，表明石炭－二叠系部分样品与该区轻质油的关系密切。进一步分析这套地层的有机地球化学特征后，提出壳质组含量和成熟度是决定石炭－二叠系能否生成轻质油的主要因素，并提出该区煤系地层生成轻质油的成熟度下限是镜质组反射率Ｒ０为１．１％。     

拉尔玛金矿矿源层──太阳顶群硅质岩的有机地球化学研究

拉尔玛金矿矿源层──太阳顶群硅质岩的有机地球化学研究林丽（成都理工学院，成都６１００５９）关键词有机地球化学，硅质岩，太阳顶群，拉尔玛金矿床拉尔玛金矿床赋存于寒武系太阳顶群中，该群的硅质岩是矿源层。本文探讨矿源层形成过程中与金关系密切的有机质的生物先...     

Petrogenesis of lavas from the AMAR Valley and Narrowgate region of the FAMOUS Valley, 36°–37°N on the Mid-Atlantic Ridge

Basaltic lavas from the AMAR Valley and the Narrowgate region of the FAMOUS Valley on the Mid-Atlantic Ridge (36° to 37°?N) range in texture from aphyric to highly plagioclase phyric (>25% large plagioclase phenocrysts). Based on ⁸⁷Sr/⁸⁶Sr and ¹⁴³Nd/¹⁴⁴Nd ratios, most of these lavas can be subdivided into two distinct, isotopically homogeneous, groups: Group I has lower ⁸⁷Sr/⁸⁶Sr (0.70288±1) and higher ¹⁴³Nd/¹⁴⁴Nd (0.51312±1) ratios; Group II has higher ⁸⁷Sr/⁸⁶Sr (0.70296±1) and lower ¹⁴³Nd/¹⁴⁴Nd (0.51309±2) ratios. Most Group II lavas are aphyric, whereas Group I lavas are primarily plagioclase phyric. Lavas from both groups show a wide range in incompatible element abundance ratios (e.g., Zr/Nb =6–29; (La/Sm)_n=0.6–1.7). Aphyric lavas have relatively constant Sc (40±1.5?ppm) abundances and CaO/Al₂O₃ ratios (0.80±0.02). Group I lavas are confined primarily to the AMAR rift valley floor whereas Group II lavas are found along the east and west marginal highs. We interpret the isotopic differences between the two groups as reflecting a temporal change in the upwelling mantle beneath this region of the Mid-Atlantic Ridge which is south of the Azore Islands. For each group, a petrogenetic model consistent with the geochemical data is multi-stage decompression melting of an initially enriched, homogeneous, mantle source region. If the early derived, incompatible-element enriched, melt increments are not always pooled with subsequent increments, the erupted magma batches may have the major element characteristics of melts derived by 10 to 20% melting, but with incompatible element abundance ratios reflecting the change from an enriched to depleted source during the incremental melting process. In this process an initially homogeneous source can generate primary magmas with the required range in incompatible element abundance ratios shown by each group. The nearly constant CaO/Al₂O₃ ratios and Sc contents of the aphyric lavas with decreasing Mg?? reflects subsequent polybaric fractionation of clinopyroxene, plagioclase and olivine over the pressure interval 8–6?kbar (24–18?km), followed by rapid transport to the surface and eruption. There is no geochemical evidence for a crustal magma chamber beneath this section of the Mid-Atlantic Ridge.     

X射线荧光测井的井液效应及其校正

本文从Ｘ射线的性质，以及Ｘ射线与物质作用的机理出发，对井液效应进行了研究，并对其影响过程进行模拟。在理想井液模型上，推导出Ｘ射线活度与钻孔参数的数理关系。在此基础上，进一步研究得到了能适应野外多变情况的井液效应校正公式（ＣＢＷＥ）和方法。     

谈调整构造

调整构造是伸展型沉积盆地和造山带中普遍存在的构造,它与走向构造一起,控制了沉积盆地或造山带的基本轮廓与内部结构。调整构造横切走向构造,并与之共同控盆、控岩、控矿,并间隔开两侧不同的构造样式。它以长时期、多阶段活动,具有高渗透性为主要特征,是控制矿带展布与矿床就位的重要构造,也是固定成矿预测区与找矿靶区的重要依据之一,本文以鲁西、中亚及乌拉山-大青山地区、兰坪─思茅盆地区及右江盆地区为例,论述了调整构造的基本特征及控矿作用。     

南极罗斯岛及泰勒谷地区火山岩的地球化学特征及成因讨论

利用微量元素和Ｓｒ，Ｎｄ，Ｐｂ同位素资料，得出了南极罗斯岛及泰勒谷地区火山岩来自于上地幔，五个地区火山岩具有相同的源区。岩石具有大洋岛屿玄武岩（ＯＩＢ）的特征。来自地幔的火山喷发的岩浆未遭受地壳物质的混染作用。地幔源区是具有高μ（＝２０６Ｐｂ／２０４Ｐｂ）比值的地幔组分ＨＩＭＵ与亏损地幔组分ＤＭＭ混合作用的结果，其中以ＨＩＭＵ组分为主，原生岩浆由具ＨＩＭＵ组分特征的深部地幔柱与浅部的ＤＭＭ混合而成。