Analysis and interpretation of patterns within and between hydroclimatological time series in an alpine glacier basin

This paper explores patterns within and between climatological and hydrological time series from an alpine glacier basin. Time series recorded in the basin of the Haut Glacier d'Arolla over the 1989 ablation season are subdivided into five subperiods. Box-Jenkins ARIMA (AutoRegressive Integrated Moving Average) and TFN (Transfer Function-Noise) models are estimated for each of the five subperiods and differences between the models are interpreted in the context of changing glacier hydrology, particularly the changing nature and extent of the glacier drainage network.     

二态序列变差函数的定理及初步地质应用

提出并证明了一个关于二态序列变差函数的定理,即二元平稳标准化正态序列的变差函数与其以零为水平的0—1二元序列变差函数的关系式。该定理为通过对定性地质变量的空间序列变异性研究以达到对原定量地质变量空间变异性的研究提供了可能与方便。文中进行了数字仿真分析,并提供了一个地质方面的初步应用。     

信阳群的解体及其大地构造意义

通过对原信阳群标准地层剖面的深入研究,查明该岩石—地层单位实属变形十分复杂的构造地层体。古生物资料表明,原信阳群南湾组确属中—晚泥盆世地层;而同位素定年结果则显示,原信阳群龟山组纯系前泥盆纪变质杂岩组成的构造地层体。据此,笔者认为原信阳群应解体。本文着重从岩石、构造分析入手,对新解体出的不同地质体分别就其地层涵义、构造归属作了较系统的论述,并扼要阐明各自发展演化的大地构造意义。     

卓资孔兹岩系成因矿物学研究

内蒙古卓资一带孔兹岩系中的辉石、角闪石、石榴石、黑云母均形成于麻粒岩相条件。二辉石地质温度计和石榴石—黑云母地质温度计和压力计计算结果表明,孔兹岩系岩石的变质温度为750—850℃,变质压力为800—920 MPa,变质地温梯度为26.2—28.5℃/km,属中压麻粒岩相。     

采用双参考温度自动增益补偿体制的机载/陆基13mm成像微波辐射计的研制

本文对双参考温度自动增益补偿型微波辐射计的工作原理、性能及参数指标进行了详细分析,提出了对于双参考温度辐射计的定标特性进行校正的方法。设计研制出了用于实时遥感大气水汽含量及有关参数的机载/陆基13mm成像微波辐射计系统,采用微型计算机实现天线的扫描控制、实时数据采集、人机对话、假彩色成像及用磁盘记录数据。     

Gaussianity and linearity tests of hydrologic time series

Although the non-Gaussian nature of many hydrologic time series is well recognized and their nonlinearity is suspected, neither property is well tested. This situation has existed partly because of a lack of appropriate tests. Recently Hinich (1982) has developed a test to test the linearity of time series which is based on the bispectral characteristics of the series. This test is used in this study to investigate the linearity and non-Gaussian characteristics of annual and daily rainfall and runoff series. The annual series may be modeled by linear models with Gaussian inputs. The daily data, on the other hand, often demonstrate nonlinear characteristics and are non-Gaussian as well.     

东秦岭燕山期大陆内部挤压—俯冲背景的A型孪生花岗岩带

按照花岗岩浆形成的不同方式、条件和过程可将花岗岩分成同熔和改造两个不同的成岩系列。以此为前提,我们发现同时代两个系列花岗岩带常平行成对分布,并与相应时期的B型俯冲或陆内俯冲带构成有规律的平行排布序列;据此提出了孪生花岗岩带的概念,并确定有A型、B型和AB型三种分带型式。本文以东秦岭燕山期孪生花岗岩带为例,系统阐述了产于陆内挤压-俯冲背景下A型孪生花岗岩带的特征、成因及其形成的构造模式,提出A型孪生花岗岩带是陆内挤压-俯冲的必然产物。     

辽西南部中生代花岗岩类地球化学特征与成矿关系

辽西南部中生代花岗岩类呈北东向带状分布,由多期侵入的岩基、岩株和岩脉组成,具有从中性—中酸性—酸性的分异演化系列。固结指数SI=41.02～1.45,分异指数DI=42.84～95.45。随着岩浆分异程度的增高,酸度和碱度明显增高,碱度率AR=1.69～3.95,并由Na_2O>K_2O变为K_2O>Na_2O。同时,岩体中Sc、V、Cr、Co、Ni、Ba、Sr、Th、U、REE及Au、Cu、Pb、Zn等微量元素和成矿元素丰度逐渐降低,而Mo则主要富集在岩浆演化的晚期阶段。随着岩浆由中性—中酸性向酸性演化,相应地形成了Au、Cu→Pb、Zn→Mo矿床(矿化)类型组合,构成一有成因联系的成矿系列。     

西昆仑山加里东期花岗岩类浅识

西昆仑山可能有一个呈NW-SE向展布的加里东期花岗岩带存在.除了地质上的依据和判断以外.带内曾获得两个岩体单矿物钾-氩法年龄资料(445Ma、527.6Ma)及一个锆石铀-铅法年龄值(480.43±5Ma).岩体多属钙碱性系列,可能是一个铜、铅、金、稀有金属成矿远景区.岩带西侧的喀拉塔什—依萨克阿特—他龙深断裂可能是加里东期古板块的边界;而这一深断裂的西南侧的木吉—安大力达坂—康西瓦深断裂则是华力西期塔里木板块与伊朗—冈底斯板块间的界线.     

Expansions of (r/a)m cos jv and (r/a)m sin jv to high eccentricities

Expansions of the functions (r/a)^cos jv and (r/a)m ^sin jv of the elliptic motion are extended to highly eccentric orbits, 0.6627 ... <e<1. The new expansions are developed in powers of (e–e*), wheree* is a fixed value of the eccentricity. The coefficients of these expansions are expressed in terms of the derivatives of Hansen's coefficients with respect to the eccentricity. The new expansions are convergent for values of the eccentricity such that |e–e*|<(e*), where the radius of convergence (e*) is the same of the extended solution of Kepler's equation. The new expansions are intrinsically related to Lagrange's series.