新疆天格尔金矿成矿带矿物包裹体研究

天格尔金矿成矿带矿物包裹体的均一温度、爆裂温度、成矿压力、气相成分及物理化学条件的研究表明，金矿化可分为两个成矿阶段，矿化深度１～１．５ｋｍ，成矿热液具有酸性还原特性，金是以金硫络合物形式迁移沉淀的。     

磁层系统的能量输入、输出与日地耦合

用１９７８年和１９８２年３６个磁暴期间的太阳风、行星际磁场（ＩＭＦ）和地磁资料，分析和检验已有的两类太阳风－磁层能量耦合函数．结果表明：Ａｋａｓｏｆｕ提出的耦合函数ε能大致地预报亚暴和磁暴的发生。ε开始起重要作用时即出现亚暴；电离层能耗达到饱和值是发生磁暴的标志。ε与磁层体系能耗之间有接近于对数量的线性关系．用１９７８－１９８６年的资料，分析环电流和极光区电离层能耗在１２１个太阳自转周内的分布表明，日面上可能存在相对持久的活动区域     

合浦盆地——中国南方扭性盆地模式

位于广西南部的合浦盆地是中、新生代发育的小型沉积盆地，从该区的区域构造特征及大量地震资料揭示的盆地结构构造特征分析认为，合浦盆地的形成和发展始终受到区域性力偶的控制，表现出明显的张扭作用特征，后期（第三纪）受到压扭作用的强烈改造，合浦盆地这一发育特征在相当程度上反映了中国南方众多沉积盆地的共同特点。     

北太平洋海平面气压的EOF分析与北方涛动

本文利用自然正交函数(E0F)分析方法,对1951—1980年北太平洋月平均海平面气压距平场进行分解,讨论了自然正交函数前两个最重要的特征向量的空间分布及其年际变化的特征。指出第一特征向量的模型在西太平洋低纬地区有最大的凝聚,其时间系数序列与马尼拉站气压距平的年际变化很相似,而第二特征向量的模型在东太平洋副热带地区有最大的凝聚,其时间系数序列与 Ship N站气压距平的年际变化也很一致,并且由这两个特征向量的时间系数定义的北方涛动指数同由Ship N和马尼拉两个单站的气压距平定义的北方涛动指数之间有很好的对应关系。由于第一和第二特征向量的大尺度特征,及其表示了北太平洋气压年际变化总方差的30.5％,可以认为,马尼拉和Ship N站的气压距平在空间上是有代表性的,并且北方涛动在北太平洋大气环流年际变化中占有头等重要地位。     

重力滑动过程中蠕滑和松弛因素的作用及其与地震的关系

本文根据岩体自身的力学性质及其变化,讨论了具有挤压特征的正断层的成因。认为这些断层的形成有岩体本身的重力作用,同时也有应力松弛现象。岩体中的应力松弛现象是由流变学因素和非流变学因素引起的。由于松弛后岩体沿断层面滑动过程中,仍受到一定的挤压作用,因此易于出现粘滑现象,从而易于发生地震。     

甚高频时岩石介电常数的测试方法和特性

本文讨论20-200MHz频率范围内平行板电容法测量岩石介电常数和电导率的方法,指出常用的静电场公式的局限性,给出较精确的似稳场动态公式,并讨论20-50MHz频率范围内的岩石介电特性。     

BLOCKING EFFECT OF HIGH PRESSURE SYSTEM ON THE FORMATION OF EXTRA-INTENSE HEAVY RAIN

Commonly the centre of an intense heavy rain occurs in a very limited area,but for the three extra-intense heavy rains of the present study,63-8 in North China,75-8 in central China and 77-8 in the desertregion of Inner Mongolia,which all appeared under the environments of“Western Low and Eastern Blocking”(EB)pattern.From this study,the following effects of the EB are found:(1)It affects the precipitationsystems staggering in a local place and/or changes the trajectories of low votices and urges them into thesame raining areas intermittently.(2)It transports water vapour into raining areas.The air flows by thewest side of EB produce strong cyclonic vorticity behind EB frequently,which transports water vapour andforms mesoscale precipitation systems more favourably than the low level jets.(3)Air flows behind EB con-jugate with adequate topographic relief,which enhances the precipitation and makes the raining areas over-lapped.So that extra-intense heavy rains could occur in higher latitudes of semi-aird areas,and occasionallyeven in the desert region of North China.Such extra-intense heavy rains could not be explained by static local humidity and temperature only.This is also a principal discrimination between the prolonged extra-intense heavy rain and the short-rangeconvective precipitation and/or the common precipitation.     

断层蠕动的断裂力学模型

对于断层蠕动的仪器观测历史不长,但已取得不少有价值的资料。图1是1971年7月17日美国加利福尼亚中部卡拉维拉斯断层上记到的一次著名的蠕动事件。图中BRT、BLS、WRT、HLC、HLS和HLD是断层上自西北向东南排列的一组蠕变仪。图中可见17     

电导率日夜不均匀性对磁层-电离层电场耦合过程的影响

本文用随时间变化的对流模式,讨论了电导率日夜不均匀性对磁层-电离层耦合过程及大尺度场向电流日变化形态的影响,以Senior-Blanc随时间变化的简单模式为基础,计入电导率日夜变化加以发展,对驱动势随时间变化为阶梯函数的情况进行了讨论。修正模式表明电导率日夜不均匀性对磁层-电离层弛豫过程产生影响,在不同地方时,二区场向电流发展状况不同,达到平衡时间也各异。在某些条件下,中午前后甚至可能达不到平衡。模式计算给出的电位及场向电流图象与观测基本特点相符。这说明S-B模式反映了电场耦合中的主要物理过程,也表明电离层电导率日夜变化的调制作用。     

The Rapid Inversion of 3-D Potential Field and Program Design

The application of three-dimensional inversion of gravity and magnetic fields is very important not only in geophysical researches, but also in the study of geological structures. A formula of potential field in frequency-domain, developed by Parker in 1973, can be used as a rapid and effective algorithm in gravity and magnetic inversion. The technique has been improved then by Oldenburg, Sprenke, Feng and others.In addition to a brief introduction of Parker's algorithm and its applications, this paper includes the following five parts: basic computational techniques, inversion of single layer, convergence and constraints, simultaneous inversion for density and topography as well as inversion of multilayers. The authors present relevant practical iterative formulas and its varieties when density distribution varies with depth in linear or exponential relation. In order to maintain computation stability and speed up iteration convergence, some approaches are taken in the program design, for instance shifting lower interface of the studied layer, inverting corrections of topography, reducing grid boundary effects and utilizing low-pass filter. With the consideration of the nonuniqueness of the inversion, a method of using seismic data to constrain the range ofpossible models is discussed. It is pointed out that the density variation generates less effects than those of topography on the spectrum of gravity anomaly in second order. Therefore density contrast and topography can be inverted simultaneously by an alternative weighting iteration. By analogy, the inversion of multilayer model can be done in the above procedure. An approach of model decomposition is useful in the computation of multilayer model. The techniques discussed in the present paper for gravitational field are also valid for magnetic field.