SSM／I微波辐射计数据中国陆地覆盖特征季节变化分析

利用星载微波辐射计SSM／I多通道、多时相亮温数据开展了中国陆地覆盖特征的季节变化研究。通过对国内外星载微波辐射应用研究分析，提出了归一化极化指数(NDPI)的概念。处理了1997年4月、7月、10月和1998年1月的(每月的20、24日各两天)多通道SSM／I数据，在此基础上计算形成了第一幅中国陆地区域的归一化微波极化指数图，开展了中国陆地区域覆盖特征随季节变化的研究。研究结果表明，不同的陆地覆盖特征有特征的NDPI值，NDPI随季节而变化，植被、水分是引起NDPI变化的主要因子。     

新汶矿区协庄矿11煤层瓦斯含量预测

分析了协庄矿11煤层已采区30个煤样的瓦斯含量及其等值线图，以数量化理论Ⅰ为建模工具，运用Visual C 6．0编制了瓦斯含量预测软件，对未采区瓦斯含量进行了预测，绘制了未采区的瓦斯含量等值线图。对于指导矿井的通风设计和采掘部署，有重要的理论和实际意义。     

Developing an Erosion Risk Map Using Soft Computing Methods (Case Study at Sifnos Island)

The erosional processes depend on various variables such as lithology, topography,drainage system, rock structure and climatic conditions. The quantitative evaluationof some of the above geological and geomorphological parameters is of primaryimportance for the purpose of developing erosion risk maps. These maps can becomeuseful tools for developing appropriate strategies on environmental protection, hazardassessment and regional planning.The island of Sifnos, in Cyclades, was chosen as a case study, where in the final map of the sub-basins of this island, erosion risk distribution is presented.     

RETRIEVING OVER-OCEAN PRECIPITABLE WATER FROM THE SSM/I MEASUREMENTS WITH SEVERAL REGRESSION ALGORITHMS

A collocated SSM/I and radiosonde measurement data set provided by the NASDA(Japan)was used to retrieve the total precipitable water(PW)over oceans.The retrieval results obtainedwith several regression algorithms were compared against the radiosonde measurements.It isshown that:(a)the routinely operational algorithm of Alishouse et al.(1990)yields significantunderestimation in high PW regime and overestimation in low PW regime;(b)a cubic correctionby Colton and Poe(1994)is not sufficient and globally improves slightly the retrieval results;and(c)the regression algorithm with the form of brightness temperature(T_b)function In (280-T_b)gives a little largely scattered retrievals in whole PW range but without considerable over-andunderestimates in low and high PW regimes.To improve the estimation of the oceanic precipitablewater from the SSM/I measurements,a composite algorithm with different forms of T_b function inlow.medium and high PW regimes is proposed and tested.     

用碘化铵活化光谱法连续测定多元素

用碘化铵为活化剂降低探样品中多元素的活化能，使其在氩气氛围中形成稳定、小背景的激发状态，再通过目视谱线强度比较法，连续测定化探样品中Sb、As、Pb、Cu、Bi、Mo、Ag、Zn。该方法可以替代原子荧光、原子吸收和极普3种综合方法，对标样GBW07401和GBW7403的8种元素平等测定4次，相对标准偏差小于2．7％。     

Book Reviews

Books reviewed:
M. Petrou and P. Bosdogianni, Image Processing, The Fundamentals
S. N. Lane, K. S. Richards and J. H. Chandler, Landform Monitoring, Modelling And Analysis
T. M. Lillesand and R. W. Kiefer, Remote Sensing And Image Interpretation
A. S. Câmara and J. Raper, Spatial Multimedia And Virtual Reality
M. N. Demers, Fundamentals Of Geographic Information Systems
J. L. Casanova, Remote Sensing In The 21st Century: Economic And Environmental Applications
G. McGrath and L. M. Sebert, Mapping A Northern Land: The Survey Of Canada
A. S. Milman, Mathematical Principles Of Remote Sensing: Making Inferences From Noisy Data
K. Kraus, Photogrammetrie Band 3: Topographische Informations-systeme
E. M. João, Causes And Consequences Of Map Generalisation
R. B. Parry and C. R. Perkins, World Mapping Today
P. M. Mather, Computer Processing Of Remotely Sensed Images: An Introduction
M. E. Schaepman, Calibration Of A Field Spectroradiometer
J. C. Iliffe, Datums And Map Projections For Remote Sensing, Gis And Surveying     

大别山地区三个花岗岩体的地球化学特征及其成因学意义

大别山地区的主薄原，天柱山，白马尖三个花岗岩体主要由花岗闪长岩和二长花岗岩组成，岩石为准铝质到弱过铝质（ACNK＝0．78－1．05），为轻稀土富集型，富含大离子亲石元素Rb,Th，以及稀土元素La,Ce,Nd,Sm，通过花岗岩地质学，岩石学和地球化学研究，认为这在个岩体的地球化学特征相似，属I型花岗岩，其构造背景为碰撞后环境。     

国外^129I在水文地质中应用综述

本文讨论了~(129)Ⅰ的三个起源:大气起源、地下起源和人工起源,通过三个实例,介绍了~(129)Ⅰ在石油勘探、水文地质研究和环境监测中的应用进展,并且指出了未来研究方向。     

碱性红13分光光度法测定氰化物浸出液中金(Ⅰ)的研究及应用

本文研究和确定了碱性红13显色、乙酸异戊酯萃取光度法,直接测定氰化物浸出液中金(I)的条件和方法。Au(CN)_2离子与显色剂形成1:1的离子缔合型配合物被乙酸异戊酯萃取,在有机相中至少稳定22h,配合物在540nm波长处有最大吸收,表观摩尔吸光系数ε_((?)40)=4.4×10~4L·mol~(-1)·cm~(-1)。金含量在0～20ug/5ml乙酸异戊酯范围内符合比尔定律。方法具有简便、快速、重现性好、毒性较小、成本低、实用性较强等优点,用于金矿浸出液的分析,结果令人满意。