红粘土的磁学性质研究

本文对陕西宝鸡剖面红粘土上部进行了详细的岩石磁学研究，确定了该地区红粘土的主要磁性矿物是磁铁矿。赤铁矿相对含量很少，对剩余磁性贡献较小。磁性质不稳定的磁赤铁矿存在于红粘土中，但不影响剩磁稳定性。特征剩磁载体主要是磁铁矿。磁性矿物的粒度是以准单畴为主。红粘土的短时间弛豫粘滞剩磁很强，因此在零磁空间进行退磁和剩磁测量是非常重要的。     

长沙黄花国际机场水源地的水文地质条件

长（沙）－平（江）白垩系红层盆地，公认为贫水地区。我院在机场附近找到了单井日产水量〉５３００ｍ＾３的优质地下水，一举解决了长沙黄花国际机场的供水问题。这项勘察成果，不仅解决了机场的水源地，而且对长－平红层盆地的水文地质研究、勘查和找水建井等，均具有现实意义。     

极谱催化波测定天然水中微量锗的研究

系统研究了Ｇｅ－ＡＲＳ－Ｈ２Ｃ２Ｏ４－Ｖ体系报道极谱催化波的影响因素，测定了Ｇｅ－ＡＲＳ－Ｈ２Ｃ２Ｏ４三元配合物的配合比为１：２：１。实验初步证明了该体系催化波为具有吸附性质的平行催化波。本法检出限为０．１４ｍｇ．ｍＬ＾－１，相对标准偏差小于９．８９％，标准回收率为９３．７０％－１０９．０％，０－５０ｍｇ．ｍＬ＾－１的锗具有良好的线性关系。     

时间剖面上小断层的计算机自动检测

煤田地震勘探一直探寻着对小断层的自动检测方法，因受各种因素的影响，至今尚无良策。本文介绍了多元地震参数的模式识别方法，并通过模型及实测资料成功地检测到１０ｍ以下小断层。     

武宁陆相红盆沉积特征与演化浅析

本文依据1:5万区调资料,扼要介绍了武宁陆相红盆填图单位的拟定、表示方法及工作原理的应用,重点叙述了红盆内多个冲积扇体特征及其之间的叠覆关系,阐明了盆缘断裂是控制红盆成生、发展演化的主导因素。对红盆成生及演化、时代也作了初步探讨。     

Early Estimation of Strong Aftershock Duration Time

In order to solve the problem of early estimation of moderately strong aftershock duration time in an earthquake sequence,this study has been conducted.First,the definition of the strong aftershock has been given.It is pointed out that there is a difference in the strong aftershock duration time between the main shock type sequence and the strong earthquake swarm sequence.After dividing the three cases,i.e.,a strong aftershock duration time larger than 1 day,smaller than 1 day,and no strong aftershock occurred in a main shock type sequence by using the pattern recognition method,we gave the rough correlation relation between strong aftershock duration time and first large shock magnitude for two types of sequences.Finally,the judgment index and method of estimating strong aftershock duration times for different sequence types have been given.     

Assimilating data into open ocean tidal models

The problem of deriving tidal fields from observations by reason of incompleteness and imperfectness of every data set practically available has an infinitely large number of allowable solutions fitting the data within measurement errors and hence can be treated as ill-posed. Therefore, interpolating the data always relies on some a priori assumptions concerning the tides, which provide a rule of sampling or, in other words, a regularization of the ill-posed problem. Data assimilation procedures used in large scale tide modeling are viewed in a common mathematical framework as such regularizations. It is shown that they all (basis functions expansion, parameter estimation, nudging, objective analysis, general inversion, and extended general inversion), including those (objective analysis and general inversion) originally formulated in stochastic terms, may be considered as utilizations of one of the three general methods suggested by the theory of ill-posed problems. The problem of grid refinement critical for inverse methods and nudging is discussed.     

滇西下关温泉水化观测项目的主成分分析及有关地震异常研究

根据对下关温泉１９９２年８个水化观测项目主成分进行的分析及影响因素的研究，发现氡和气压、水温和ＰＨ值、氩和氮、二氧化碳分别构成独立性较强的４个主成分．气压和流量是化学组分的主要影响因素     

甘肃省东南部未来地震危险区的模式识别

在综合分析甘肃省东南部地震地质特征的基础上，利用模式识别方法判定未来地震危险区的可能位置．结果表明，本区易发生地震的地点与全新世断裂强烈活动段相吻合，从而提高了对未来地震危险区判定的可信度