Geochemical survey of thermal system in Northeast China and their geothermometric characters

The chemical composition of several thermal springs around Changbaishan area has been investigated. Cenozoic basaltic rocks are widely distributed in Northeast China and geothermal characteristics have been described. About one hundred hot springs exist around Changhaishan Volcano at the border between China and D.P.R.Korea with high temperature about 82~C. The pH values of the spring water range from 6.9 to 7.1 and the total flow rate is about 4.8 L/sec. The chemical composition of the thermal springs is sodium carbonate; the high-mineral contents of thermal water are believed to have medicinal properties. Bathhouses are already built along the hot springs to take the advantage of the supposed healing properties. The high quality of those hot springs is believed to be utilitized for mineral water. The chemical equilibrium temperatures were estimated at about 160℃ based on the Na-K-Ca geochemical thermometer.     

Size-Flux Relation in Solar Active Regions

We present a study of the relationship between integral area and corresponding total magnetic flux for solar active regions. It is shown that some of these relationships are satisfied to simple power laws. Fractal examination showed that some of these power laws can not be justified inside the simple models of stationary magnetic flux tube aggregation. All magnetic fluxes and corresponding areas were calculated using the data measured with the Solar Magnetic Field Telescope of the Huairou Solar Observing Station in Beijing.     

死海（约旦）里散半岛的重磁勘查

里散半岛位于非洲板块和阿拉伯板块交接处的死海盆地中。该盆地面积大，构造简单且有下沉运动，说明它是一拉张型盆地。由重力异常数据发现死海盆地可划分成沿南北延伸各约３０ｋｍ长的几个块体，里散半岛是其中最深的一个。中生代沉积厚度约６ｋｍ，更新世沉积厚度为９ｋｍ。死海盆地的拉张距离为２０ｋｍ，表明死海盆地的年龄约３．３Ｍａ。里散半岛下部的前寒武纪结晶基底磁化率较高，这与区内延续的构造活动性有关。     

一种简单方便的防拷贝程度设计方法：识别计算机的C语言程序…

本主要讨论一种特殊的Ｃ语言程序设计方法，这种程序能有效地对自身的关键模块加密，能运行是地完成动态解密。     

用鲑鱼的命换我们的美丽?

在芝加哥,有一位名叫拉姆的女士是化妆品推销员。每天的午饭,必定会有大马哈鱼(即鲑鱼)下肚。将鲑鱼身上涂抹少许奶油,再放到烤炉里不断调节电磁热辐射量,很快就能烹饪出味美色香的精制鲑鱼。拉姆说, “根据补充营养的标准,鲑鱼肉能使人返老还童。”而且她一直在实践鲑鱼的美容效果。由鲑鱼的价值连城而引发     

上一轮实施的基本评估和对新一轮的建议 龙泉市土地利用总体规划

土地利用总体规划是在一定区域内,根据国家社会经济可持续发展的要求和当地自然、经济、社会条件,对土地的开发、利用、治理、保护在空间上、时间上所作的总体安排和布局,是国家实行土地用途管制的基础。县、乡级土地利用总体规划属实施性规划,其主要任务是按照上级土地利用总体规划的指标和布局要求,划分土地利用区,明确各土地利用区的土地主要用途和区内土地使用条件,为单位和个人合理使用土地,进行土地开发、整理提供依据,为政府审批农     

层状铜矿床的金属备源

引言含铜页岩型层状铜矿床中,铜沉积定位在早期成岩期的新概念至少从60年代初有了发展,在过去的二十多年,多方面研究确认和加强了这个概念,研究人员现在不得不调查似乎可能的铜的补给来源以及搬运到成岩成矿目前所在地的金属机制,本文试图评述这些金属的某些潜在的来源,应特别强调注意的是在很多情况下,含金属溶液在某些方面肯定与活动裂谷带上升的喷气流体相类似的可能性。     

国际构造图:四十年的道路

本文回顾了国际构造图的创意及编制历史,揭示了该项工作对地质科学发展的重要性。它既反映了关于地球演化观念之变化,也反映了固定论地槽—造山带—地台说为活动论板块构造理论所取代的过程。 早在18世纪就有了编制地质图的最初尝试,但基本上是没有时代概念的岩性图。19世纪初,随着真正地质图的出现,地质学才真正成为科学。然而,普通地质图不能充分反映地壳构造     

利用射电源位置残差解算章动系数的改正

章动序列的不准确引起春分点和黄赤交角的变化，直接影响到射电源的赤经、赤纬。利用IRIS网五天一组的VLBI观测资料，我们解算了定组观测的13颗射电源的赤经、赤纬，从射电源的位置残差解算出黄经章动和交角章动的改正，并估算了章动周年项（365.3天）和半年项（182.6天）的系数改正及自由核章动的振幅。     

NORTHERN AND SOUTHERN HEMISPHERIC POLAR LOWS——A COMPARATIVE STUDY

Northern Hemispheric“polar lows”,i.e.maritime,small,but fairly intense cyclonic systems have been studied formore than two decades.Recently researchers have turned their attention towards the occurrence of polar lows and othersmall-scale cyclonic disturbances on the Southern Hemisphere.In this paper a short account of our present knowledgeof Northern Hemispheric polar lows will be given,followed by some preliminary results of an investigation of the natureand occurrence of polar lows on the Southern Hemisphere.