三维重力内波和对流云街的启动机制

在一个下部为弱不稳定层、上部为稳定层的二层模式中，求解线性化的大气动力—热力学方程组，表明一个孤立山丘所引发的重力内波，在向下游传播过程中与边界层中对流相互作用，形成大气低层的涡漩活动，其图象与观测到的对流云街结构相似。     

中国夏季降水异常空间模与副热带高压的关系

本文用1959～1994年6、7、8月全国范围47个5°×5°经纬度网格降水资料分析了夏季降水异常空间模的月际差异，并在此基础上用西太平洋副高指数及青藏高原指数#FKB#FS分析降水异常空间模与环流的关系，为检验环流指数与降水相关场的整体信度，还对8月份降水资料进行了Monte-Carlo检验。结果表明，夏季总降水异常的空间模在每一月份中并非表现得同样清楚，江淮流域与河套及华南的反相关在8月份表现得最清楚。而青藏高原中东部南北两侧的负相关在6月及8月很清楚，7月份次之。8月份西太平洋副高北界异常对江淮流域与河套及华南地区降水异常反相关的产生有很大作用。副高稳定偏北时，河套、华南易涝，江淮易旱。反之亦然。青藏高原指数#FKB#FS与逐月降水的相关分析表明，青藏高原上高压及低涡活动对高原中东部南北两侧负相关的产生有一定作用。当高压活动偏多时，北侧易旱、南侧易涝。并且6月及8月的作用较大，7月较小。另外，8月份副高活动对这一降水异常空间模的产生也有一定影响。     

降雨对张家口地震台伸缩仪干扰特征的研究

张家口伸缩仅受降雨干扰，不但与降雨量有关，而且与季节和降雨的方式等也有密切的关系。夏、秋季节持续或突降大雨后，两天左右引起应变量明显的变化，可用2．5倍毫米应变均方差，识别干扰和异常，有较大的使用价值。     

分区经验性地震综合预报指标的初步研究

本文简要给出了滇，川及邻区近年短临地震综合预报的经验性作法和预报指标，从不同角度探索了进入强震短临阶段和强震三要素的经验性综合分析方法。     

The palaeolimnology of Lake Fidler, a meromictic lake in south-west Tasmania and the significance of recent human impact

Three meromictic lakes in the World Heritage Area of south-west Tasmania possess unusual microbiological communities. Their meromixis is maintained by periodic incursions of brackish water from the nearby Gordon River which, in its lower reaches, is a salt-wedge estuary. In 1977 the construction of a dam in the middle reaches of the river restricted penetration of the salt-wedge and meromixis rapidly declined in all three lakes. A palaeolimnological study was carried out on one of the lakes, Lake Fidler, firstly to determine the history of meromixis and its associated microbiological communities, and secondly to assess whether the recent and rapid decline of meromixis is inconsistent with natural rates of development of the Gordon River meromictic lakes. One part of this study included the analysis of the stratigraphy of fossil diatoms from a 17-metre sediment core dating back 8000 yrs. Detrended Correspondence Analysis and Analog Matching were used to compare diatom species assemblages in core samples with diatom samples from a reference dataset consisting of a selection of lake and river sites in the lower Gordon River valley. Five distinct stratigraphic zones were identified in the core. These zones indicated specific stages in the development of the Gordon River lakes from river backwaters to ectogenically-maintained meromictic lakes which will, finally, become terrestrialised by encroaching rainforest. The onset of a stratified water column was identified by the emergence of a dominant freshwater algal flora which suggested that the lake had developed a mixolimnion and become meromictic ca. 2070 ± 50 ¹⁴C yrs ago. In the context of this long history of meromixis, the rapid demise in meromictic stability following construction of the dam is judged to be inconsistent with natural rates of development. The palaeolimnological studies, of which this paper is one part, prompt recommendations for a management strategy to prevent the further decay of these meromictic lakes in the World Heritage Area.     

祁连山地区1310年以来湿润指数及其年际变幅的变化与突变分析

本文通过用树木年轮资料重建的祁连山地区5～7月份1310年以来的湿润指数序列，建立了一个反映该地区湿润指数年际变幅序列，对这两个序列分别进行了等级分类和干湿、强弱的时段分析，并用最大熵谱分析法对这两个序列的不同时段分别进行了周期分析。采用HK突变检验方法对这两个序列分别进行了突变分析，发现祁连山地区的湿润指数及其年际变幅存在明显的突变年份。     

分离的大陆板块边缘镁铁－超镁铁岩系Th／Hf—Ta／Hf判别

本文在论述了Ｔｈ／Ｈｆ－Ｔａ／Ｈｆ关系判别岩浆岩源区大地构造环境机理的基础上，根据世界上典型大地构造环境区岩浆岩系的Ｔｈ、Ｔａ、Ｈｆ特征，提出了分离的大陆板块边缘镁铁－超镁铁岩的Ｔｈ／Ｈｆ—Ｔａ／Ｈｆ判别标志：Ｔｈ／Ｔａ＝１．８～４．０，Ｔａ／Ｈｆ＞０．１。     

山西离柳矿区奥陶系灰岩水环境质量分区及成因研究

本文对离柳矿区奥陶系灰岩岩溶地下水的环境质量进行了评价和分区，结合地质条件简述了各区的特点；还用地质－水文地质学相结合的理论，对各环境质量区形成的原因，进行了分析和研究，进而从理论上证明环境质量分区和选用标准的合理性。     

Assessment of hydrogeological conditions in basement aquifers of the Precambrian Oban massif, southeastern Nigeria

A combined analysis of lineament length density from radar imagery and surface resistivity data is used to assess the hydrogeological conditions in the Oban massif, Nigeria. The results show that the data guided the qualitative and quantitative estimation of some aquifer parameters. These include resistivity of the water bearing formations (280–740 ω m), thickness (5–140 m), limited hydraulic conductivity (8.53-13.18 m/day) and transmissivity (410.65–725.88 m²/day) data. In addition, the lineament length density for the area ranged between less than 0.2 to slightly more than 0.4. Site evaluation for the location of productive boreholes/wells using a groundwater potential index (GWPI) indicates that areas with a GWPI of greater than 35 are consistent with relatively high yield.     

应用灰色系统理论进行地震灾害等级划分和灾情分析比较

通过对地震时人员死亡、受伤、房屋破坏和直接经济损失４个灾害损失指标的函数转换，使得用不同的损失指标判别灾害等级的标准取得了统一．然后，应用灰色聚类方法划分地震灾害等级，并用灰色关联度排序方法对不同的灾情进行分析比较．同时还对１９６６～１９８３年我国大陆７次重要地震和１９９５年我国大陆１７次地震进行了灾害等级划分和不同灾情的分析比较．结果表明，该方法基本可定量准确地评价地震灾情