1997年4月6日、11日、16日新疆伽师4次6.3～6.6级地震烈度分布及震害特征

1997年4月6日、11日、16日新疆伽师继1月21日和3月1日3次6级以上地震之后又连续发生了4次6级以上地震。极震区烈度达Ⅷ度．极震区内的英买里乡所有Ⅰ类房屋几乎全部倒塌或严重破坏；江巴孜乡、和夏阿瓦提乡、克孜勒苏乡和巴仁镇的大部分房屋倒塌或严重破坏。在地下水位高、土质松散地区出现大面积喷水冒砂与地裂缝。根据震害评估与宏观考察资料，介绍了各烈度区的震害特征。     

湖南东江水库诱发地震

东江水库自蓄水前约半年起就开始进行地震监测，发震后通过密集台网强化观测、震源机制解及地震地质等多项工作，综合研究该库诱发地震发震原因，认为由于库水渗透引起的多种局部性应力调整导致水库诱发地震活动．其发展趋势将表现为逐渐衰减，今后不致于发生破坏性地震．     

AN EVALUATION OF SEVERAL TURBULENCE SCHEMES FOR THE PREDICTION OF MEAN AND TURBULENT FIELDS IN COMPLEX TERRAIN

A prognostic three-dimensional mesoscale model has been developed andused in one- and two-dimensional modes to evaluate ten local turbulenceclosure schemes. The schemes ranged from first-order to the two-equationprognostic schemes. Predictions by the models were compared for aone-dimensional convective boundary layer using mixed layer scaling andmeasurements to interpret the results. Two-dimensional simulations were alsoperformed for a sea-breeze flow and for flow over a hill. The results showedthat for all of the models considered, minor differences were produced in themean meteorological fields and in the vertical scalar fluxes, but majordifferences were apparent in the velocity variances and dissipation rate.Predicted tracer concentrations were very sensitive to the turbulence modelformulation for dispersion from a point source in the convective boundarylayer, particularly for the prediction of maximum concentrations. Predictedtracer concentrations from a surface volume source for the two-dimensionalsimulations were similar for all models, although the degree of mixing in themorning growth period produced some differences. Generally, good results forthe mean meteorological fields can be obtained with first-order schemes, evenif they underpredict the magnitude of turbulence in the convective boundarylayer, and reasonable tracer concentrations can also be obtained with thesemodels provided near-source effects are not important. The two-equationprognostic models performed best for the prediction of turbulence in theconvective boundary layer.     

Mercury mobility at the Carson River Superfund Site, west-central Nevada, USA: Interpretation of mercury speciation data in mill tailings, soils, and sediments

The Carson River Superfund Site in west-central Nevada is an area of Hg-contaminated soil, sediment, water, air, and biola resulting from the amalgamation milling of Ag-Au ores of the Comstock lode worked approximately a century ago. In order to develop an understanding of the behavior, transport, and fate of Hg at this site, a technique was developed to estimate the proportions of total, elemental, exchangeable, organic, and sulfide Hg in soils, sediments, and tailings.Results of this analysis performed on active Carson River sediments indicate that Hg is selectively dissolved out of Hg-Au amalgam particles and subsequently adsorbed to fine-grained sediments which are then deposited in downstream, low-energy reaches of the Carson River and Labontan Reservoir. In the relatively more-reducing environment of the reservoir Hg appears to be converted, in large part, to relatively-insoluble HgS.The original elemental form of Hg released to the environment is the chemical form which is still dominant in most highly-contaminated soils, sediments, and tailings. Deeper, more-reducing soil horizons, however, appear to fix a significant portion of the Hg as HgS, analogous to the Lahontan Reservoir example described above. This fixation as HgS is documented to be largely limited to higher-sulfur areas where sulfide minerals from the Comstock ores increase the total sulfur concentrations of contaminated soils, sediments, and tailings.     

边坡及其它类工程地质问题研究

本文提出有关边坡工程地质研究方面的一些新概念，看法和问题，并概述了属地这一专题的边坡及其它各类工程地质问题的研究成果。     

场论理论在经济客体地位评价中的应用：以河南省城市地位为例

一个 经济客体地位的评价不能单从该经济客体本身来考虑，它还与评价区域周围其它观察经济客体有关，会受到其它经济客体的衬托作用。经济客全的地位应包括评价经济客体在其它经济客体的“势”和其它经济客体在评价经济客体处的“势”两部分。     

红壤丘陵小区域水平上不同时段土壤质量变化的评价和分析

引相相对土壤质量指数的概念，应用地理信息系统技术，为小区域水平上土壤质量时空变化的评价提供了一种方法，并用于千烟洲试验站开垦利用１１ａ后土壤质量变化的评价。统计分析服农田，桔园，牧草地，人工林，天然林等多种土地利用方式下土壤质量变化的特征。     

渗流场与应力场耦合分析在地质科学中的应用

论述了渗流场与应力场耦合分析的基本原理及其在石油勘探、成矿预测及斜坡稳定性评价中应用的理论基础和技术路线。     

大气氡测量影响因素探讨

本文介绍了地壳中放射性元素的分布规律及大气中氡的来源，并着重讨论了测量大气氡浓度的影响因素，以便更好地进行放射性环境的评价及防止，避免氡对人体的危害。     

评价储层含油性的热解参数校正方法及其应用

评价储层含油性时，热解参数Ｓ１＋Ｓ２是一项有效参数。其中Ｓ２相对稳定，Ｓ１则随样品类别或露置时间的不同而发生变化。岩心样品的随钻解分析值比较接近真实，岩屑和井壁取心样品的Ｓ１会明显损失。而目前多数探井心进尺少，大多为岩屑录井。