滇东重点监视区Q值随时间变化的研究

本文根据Ａｋｉ的尾波散射理论，在前几年圈定的滇东重点监视区范围内量取了１１个台近站２５００个地震尾波资料，计算了各台在研究的大区域及６个小区域内的随时间变化的Ｑ值，并分析了其随时间变化的特征，得出滇东重点监视区在未来３至５年内不会有７级以上大震发生的危险性。     

B模式产品业务应用价值的总结分析

在总结江苏省台近１０年ＭＯＳ预报业务效果的基础上，提示了Ｂ模式产品在省级台天气预报中的应用价值，包括产品对江苏的释用水平．释用经验和如何取得最大业务效益的途径。     

攀西地区重力均衡异常的研究

研究表明,康滇地轴及其东部地区属均衡补偿平衡区,西部属强烈上升的异常区。上升的原动力为板块碰撞的构造力与均衡调整力的综合。     

Characteristics of air flow over Andaman islands including precipitation

The characteristics of simulated air flow over Andaman Islands are studied with a two-dimensional version of the University of Virginia meso scale model (UVMM). Using the observed synoptic data as initial conditions, 24 hr simulations are obtained for a day each in April and November. These days are chosen to study the variations in the simulated flow pattern under different synoptic conditions including precipitation effects. A large scale condensation scheme is employed to consider the effect of latent heat release on the perturbations. The results show that the latent heat released by condensation strengthens the intensity of perturbations and the topography accelerates the arrival of sea breeze by about an hour. The model-simulated results, given in graphical form, are discussed and compared with available observations.     

“准地籍测量”—一种有效的地籍测量模式

“准地籍测量”是在已有的地形图上根据地籍台帐于实地标绘宗地界域线,划分街道、街坊、调查区及编号,调查宗地座落、地名、门牌号码、房屋结构及层数等;基于这种测量模式,其成果以传统的图、表展示已很难适应。实践运用MGE地理信息基础平台开发出的地籍信息管理系统,其准地籍测量约70％的宗地成果与实际确权一致,不失为一种快速、经济有效的地籍测量模式。     

贵州省矿业开发引起的环境问题及其成因探讨

矿业开发给贵州省造成严重的生态环境问题,主要包括环境污染,矿业荒漠化和环境地质灾害。虽然贵州省矿产开发的历史比较悠久,但解放前的生态破坏和矿业污染仅局限在个别地区,解放后出现的三次大规模资源环境破坏,给贵州省矿业可持续发展带来严重影响,特别是改革开放以来矿山资源的无序开发对环境的危害最重。导致贵州省矿业环境问题的主要因素包括：矿产资源价值的严重扭曲,乡镇企业的超常规发展,部分政府官员的权力寻租,以及资源导向型的脱贫模式等。     

由“撤县建区”引起对中国城市郊区化的思考

江苏省最近一轮的城镇体系规划中提出的“撤县建区”方案,这一方案引起了笔者对有中国郊区化的思考。在本文中作者主要阐述了四个方面的内容,首先指出中国的大城市已经进入了郊区化阶段;其次将中外郊区化进行了系统比较;接着论述了郊区化的利与弊,最后,在前文基础上,提出了走中国特色的城市郊区化道路需采取的一系列措施。     

关中地区地磁比值Rq的变化与地震关系的分析

应用小波分析空间差分法分析了泾阳台、乾陵台、周至台和郑州台的Z分量的地磁磁静日Rg值的变化规律，结果显示，各台的磁静日Rg值有较一致的年变规律。分析泾阳台与其它各台的磁静日R。差值分析和小波变换，发现1998年1月5日泾阳4．8级地震前4个月内存在较明显的异常变化。可能反映了泾阳地震的震磁效应。对远离泾阳台、乾陵台的青海昆仑山口西8．1级地震，震前也有明显异常变化。     

The Relative Impact of Regional Scale Land Cover Change and Increasing CO2 over China

A series of 17-yr equilibrium simulations using the NCAR CCM3 (T42 resolution) were performed to investigate the regional scale impacts of land cover change and increasing CO2 over China. Simulations with natural and current land cover at CO2 levels of 280,355, 430, and 505 ppmv were conducted. Results show statistically significant changes in major climate fields (e.g. temperature and surface wind speed) on a 15-yr average following land cover change. We also found increases in the maximum temperature and in the diurnal temperature range due to land cover change. Increases in CO2 affect both the maximum and minimum temperature so that changes in the diurnal range are small. Both land cover change and CO2 change also impact the frequency distribution of precipitation with increasing CO2 tending to lead to more intense precipitation and land cover change leading to less intense precipitation-indeed, the impact of land cover change typically had the opposite effect versus the impacts of CO2. Our results provide support for the inclusion of future land cover change scenarios in long-term transitory climate inodelling experiments of the 21st Century. Our results also support the inclusion of land surface models that can represent future land cover changes resulting from an ecological response to natural climate variability or increasing CO2. Overall, we show that land cover change can have a significant impact on the regional scale climate of China, and that regionally, this impact is of a similar magnitude to increases in CO2 of up to about 430 ppmv. This means that that the impact of land cover change must be accounted for in detection and attribution studies over China.     

望儿山金矿生产勘探超前期限与范围合理性的选择和应用

望儿山金矿浅部生产已接近尾声,其生产正向深部转移,但望儿山金矿深部地质条件十分复杂,为使其生产能更好的延续下去,通过对生产勘探的超前期限与范围合理性的研究和探讨,在总结前人经验的基础上,根据望儿山金矿实际,采用价值法的分析,得出其现有生产勘探合理的超前期限与范围.