Instructions for Authors

Instructions for Authors

Instructions for Authors     

太阳γ及β_γ黑子磁埸区大耀斑的地磁效应

本文研究了1938—1958年间,太阳γ及βγ黑子磁場区的3級与3~+級大耀斑的地磁效应。用相关及迴归分析法,計算了太阳赤緯、日軸方位角及耀斑的日面經緯度等因素对于磁扰的彭响。根据分析結果,繪出了日面地磁扰动等值图。利用水手2号飞船上量譜仪測出的太阳风速度和相应的地磁A_p指数,算出了相关关系,并用此和上述日面地磁扰动等值图配合,推算了在耀斑发生以后,太阳风的径向分量沿地球軌道的分布。参考文內各相应的曲线,可以約略估計出耀斑发生后地磁A_p指数的大小。     

Late Paleozoic Fluid Systems and Their Ore-forming Effects in the Yuebei Basin, Northern Guangdong, China

Based on detailed and systematic researches of the geology of ore deposits, fluid inclusions and isotope geochemistry etc., and regarding the Late Paleozoic fluid system of the Yuebei Basin as an integrated object in this paper, we have revealed the temporo-spatial evolution law of the basin＇s fluid system and discussed its ore-forming effects by simulating and analyzing the distribution of ore-forming elements, the fluid thermodynamics and dynamics of evolution processes of this basin. The results show that Late Paleozoic ore-forming fluid systems of the Yuebei Basin include four basic types as follows. （1） The sea floor volcanic-exhalation system developed during the rapid basin slip-extension stage in the Mid-Late Devonian, which affected the Dabaoshan region. It thus formed the Dabaoshan-type Cu-Pb-Zn-Fe sea floor volcanic-exhalation sedimentary deposits. （2） The compaction fluid system developed during the stable spreading and thermal subsidence-compression stage of the basin in the Mid-Late Devonian. The range of its effects extended all over the whole basin. It resulted in filling-metasomatic deposits, such as the Hongyan-type pyrite deposits and pyrite sheet within the Fankou-type Cu-Pb-Zn-S deposits. （3） The hot water circulation system of sea floor developed during the stage of basin uplifting and micro-aulacogen from the late Late Carboniferous to Middle Carboniferous. The range of its effects covered the Fankou region. It thus formed MVT deposits, such as the main orebody of the Fankou-type Pb-Zn-S deposits. （4） The gravity fluid system developed during the stage of fold uplifting and the basin closed from Middle Triassic to Jurassic, forming groundwater hydrothermal deposits, e.g. the veinlet Pb-Zn-calcite orebodies of the Fankou-type Pb-Zn- S deposits. Migration and concentration of the ore-forming fluids were constrained by the state of temporo-spatial distribution of its fluid potential. Growth faults not only converged the fluids and drove them to move upwards, but also the fluids often crossed the faults to the edges of the basin at the bottom of these faults and the lithologic interfaces, and even migrated to the basin＇s edges from top to bottom along the faults, which may be one of the basic reasons for the stratabound deposits to cluster mainly along the contemporaneous faults on the inner border of the basin. The superposed mineralization resulting from the multi-stage activity of contemporaneous faults and ore-forming fluid systems in the basin may be one of the key factors for forming superlarge ore deposits.     

容量法测定水样中硫酸根

本文对EDTA滴定过量Pb间接测定SO_4~(2-)的方法作了改进。加入乙醇抑制PbSO_4沉淀的溶解,使滴定不需分离沉淀而直接进行。用六次甲基四胺调节控制pH为5.2—5.4,可避免大量共存Ca~(2+)、Mg~(2+)的干扰。改进后的方法简单、快速,准确度和精密度均好,可适用SO_4~(2-)含量高于1mg/L的天然水分析。     

云南省制造业的地区专业化研究

长期以来,制造业是云南省新型工业化进程和经济发展的重要引擎,发挥规模经济效应、提升生产效率、改进产业结构的专业化分工将是云南省进一步推进"桥头堡"建设下制造业发展的重要方式。文章运用云南省第二次经济普查数据,选用樊福卓的地区专业化系数,从地区和行业两个角度研究云南省制造业的地区专业化状况。结果表明,云南省制造业整体的地区专业化水平较低,制造业发达州市的地区专业化水平低,欠发达州市的地区专业化水平高;区位条件、行业规模与特征是影响地区专业化水平的重要因素。在此基础上,根据各州市的区位条件、资源禀赋和城市规模给出相应的制造业专业化分工方式,以期为云南省新型工业化建设和经济发展提供理论和实践依据。     

泥岩有水热解产生低分子量有机酸实验研究

直接采用泥岩岩屑进行有水热解,测定实验后水溶液中几种常见低分子量有机酸.结果表明,在实验的水溶液中检测到了丰富的低分子量有机酸,组成上主要为一元羧酸,其中又以乙酸占优势.讨论了不同热解条件对有机酸产率以及组成的影响.实验结果表明,有机酸总量随加热温度和时间增加而增加,并且溶液中不同有机酸相对组成也发生变化.当温度高于1...     

从上海城市建筑密度看城市用地效率与生态环境

建筑密度是城市规划的定额指标之一,也间接反映出城市用地效率,同时又和城市生态环境的保护密不可分。从上海地区的建筑密度现状分析,了解建筑密度同城市用地效率和生态环境保护之间是密切相关的,在借鉴国外城市用地规划方面,上海应加强政策调控与科学规划,最后提出了一些建议。     

Normalization of Hydrodynamic Coefficients in Morison Equation

-The hydrodynamic coefficients C_d and C_m are not only dependent on the size of slender cylin-der,its location in water,KC number and Re number,but also vary with environmental conditions,i.e.,in regular waves or in irregular waves,in pure waves or in wave-current coexisting field.In this paper,thenormalization of hydrodynamic coefficients for various environmental conditions is discussed.When aproper definition of KC number and proper characteristic values of irregular waves are used,a unified re-lationship between C_d,C_m and KC number for regular waves,irregular waves,pure waves and wave-cur-rent coexisting field can be obtained.     

一种基于时延的水下声基阵坐标估算方法

阵形估算是水听器阵列应用中的关键问题,基于时延的水下声基阵大地坐标标定方法利用声源发射和声阵接收的CW脉冲之间的时延获得空间中的三个声源发射点到阵元的距离,并以这三个声源发射点为圆心,以声源发射点到阵元的距离为半径做球面,得到的交点即为阵元的大地坐标.通过实验数据分析结果可以得出如下结论:基于时延的球面交汇法得到的阵形标定结果的绝对误差均值为0.13 m,可以把该方法运用于实际的工程测量当中.     

Estimation of Turbulent Fluxes Using the Flux-Variance Method over an Alpine Meadow Surface in the Eastern Tibetan Plateau

The flux-variance similarity relation and the vertical transfer of scalars exhibit dissimilarity over different types of surfaces,resulting in different parameterization approaches of relative transport efficiency among scalars to estimate turbulent fluxes using the flux-variance method.We investigated these issues using eddycovariance measurements over an open,homogeneous and flat grassland in the eastern Tibetan Plateau in summer under intermediate hydrological conditions during rainy season.In unstable conditions,the temperature,water vapor,and CO2 followed the flux-variance similarity relation,but did not show in precisely the same way due to different roles(active or passive) of these scalars.Similarity constants of temperature,water vapor and CO2 were found to be 1.12,1.19 and 1.17,respectively.Heat transportation was more efficient than water vapor and CO2.Based on the estimated sensible heat flux,five parameterization methods of relative transport efficiency of heat to water vapor and CO2 were examined to estimate latent heat and CO2 fluxes.The strategy of local determination of flux-variance similarity relation is recommended for the estimation of latent heat and CO2 fluxes.This approach is better for representing the averaged relative transport efficiency,and technically easier to apply,compared to other more complex ones.