淄博市人工影响天气作业决策指挥系统

根据当地地理和气候特点建立的人工影响天气作业指挥系统，体现了智能化、积累型的特点，使人工影响天气作业指挥向客观化、自动化迈进了一步，提高了人工影响天气的作业效果。     

Tectonic implications from sapphirine-bearing lithologies, south-west Grenville Province, Canada

Sapphirine has been found in two types of magnesian, metabasic lenses from tectonite zones within the Central Gneiss Belt of the south-west Grenville Province, Canada. The first type (association I) comes from a lenticular mafic lens within highly tectonized anorthosite, the second type (association II) comes from meta-eclogitic pods with foliated amphibolite rims. In each case the sapphirine-bearing assemblages record a wealth of reaction textures. The primary mineralogy in association II is represented by high alumina clinopyroxene, garnet and kyanite ± plagioclase and records pressures of around 14-16 kbar; in association I the primary mineralogy is represented by plagioclase, two pyroxenes and possibly olivine but here the equilibrium pressure is unknown.
The host gneisses equilibrated at approximately 8 to 10 kbar and 700-750°C by continuous cation exchange reactions during and after the culmination of the Grenvillian orogeny at 1.16-1.0 Ga. It is unlikely that the higher pressures recorded in the meta-eclogitic pods represent an earlier high-pressure metamorphism as the pods are restricted to shear zones. A tectonic mode of emplacement into a crust undergoing granulite facies metamorphism is more likely. Sapphirine formed by discontinuous decompression reactions; in association II this involved a reaction between garnet and kyanite and resulted in the formation of magnesian granulite facies assemblages. At the same time primary clinopyroxene became much less aluminous by evolving plagioclase. Pressures and temperatures from coexisting phases, that are believed to have equilibrated at the same time as sapphirine formation, are estimated as 11 to 12 kbar and 750°C. These probably represent the peak conditions for granulite facies metamorphism in the south-west Grenville Province.     

STUDY ON AIR-SEA HEAT EXCHANGE MECHANISM IN EL NINO AND LA NINA EVENTS

2°×2° mean monthly COADS grid data in 1974 and 1987 of E1 Nino and La Nina years are used to compute thesensible and latent heat fluxes,the net longwave radiation,the incident solar radiation and heat budget on the tropicalPacific surface(30°S—30°N).The difference of the heat budget between El Nino and La Nina mainly occurred on theequatorial ocean surface,especially the water area west of Ecuador and Peru.During El Nino,the sensible and latentheat exchange increased,the net longwave radiation and incident solar radiation decreased and the net gain(loss) of heatreduced(increased) on the ocean surface.During La Nina,the circumstances were opposite.Finally an ideal model ofair-sea heat exchange mechanism for the El Nino-La Nina cycle is summarized. Key words:El Nino,La Nina,air-sea heat exchange,COADS grid data     

地震层析成像在工程勘测中的应用

目前,地震层析成像在许多工程勘测和矿产勘探部门开始试用,迫切需要有这方面的指南性的文章。本文综合介绍地震层析成象的原理、数据采集技术、图象重建的理论和方法,并通过一个成功的应用实例说明方法的应用效果。作为一种新的物探方法,地震层析成象的应用仍然存在许多问题,如非线性图像重建,文章对存在问题及对策作了详细讨论。     

行运算和二维数字滤波技术在钻孔电磁波层析成像中的应用

本文给出一种适用于现场实时处理的钻孔电磁波层析成像方法。该方法的特点是：（1）利用行运算（Row-Ation）技术，使得层析处理在仅有640K容量的DOS环境下也能运行自如；（2）反演过程中，采用直方图增强技术对灰度图进行后处理，提高信噪比和分辨率，改善了图像的质量。所设计的层析处理软件包在模型反演和野外实际资料处理中得到了比较满意的结果。     

电偶源频率电磁测深中比值视电阻率和阻抗相位的联合反演

本文论述了电偶源频率电磁测深中，利用比值视电阻率和相应阻抗相位进行联合反演的必要性和可能的应用前景及具体实施方法。理论模型和实际观测资料的反演试验表明这一联合反演是可行和有效的，且明显地优于视电阻率和阻抗相位的单参量反演。