南海珠江口盆地陆坡稳定性评价

In nature, a slope stability is determined by the ratio of a sliding resistance to a slide force. The slide force of a marine deep-water continental slope is mainly affected by sediment mechanics properties, a topography, and a marine seismic. However, the sliding resistance is mainly affected by sedimentary patterns and a sedimentary stress history. Both of these are different from case to case, and their impact can be addressed when the data are organized in a geographic information system（GIS）. The study area on the continental slope in Zhujiang River Mouth Basin in South China Sea provides an excellent opportunity to apply GIS spatial analysis technology for the evaluation of the slope stability. In this area, a continental slope topography and a three-dimension（3-D） topography mapping show a sea-floor morphology and the distribution of a slope steepness in good detail, and the sediment analysis of seabed samples and an indoor appraisal reveals the variability of a sediment density near the sea-floor surface. On the basis of the results of nine geotechnical studies of submarine study areas, it has worked out that an equivalent cyclic shear stress ratio is roughly between 0.158 and 0.933, which is mainly depending on the initial water content of sediment. A regional density, slope and level of anticipated seismic shaking information are combined in a GIS framework to yield a map that illustrates a continental slope stability zoning under the influencing factors in Zhujiang River Mouth Basin in the South China Sea. The continental slope stability evaluation can contribute to north resources development in the South China Sea, the marine functional zoning, the marine engineering construction and adjust measures to local conditions, at the same time also can provide references for other deep-water slope stability analysis.     

分组交换网与市-县气象业务实时系统

通过对沈阳市市－县气象业务实时系统的介绍，给出了公用分组交换网应用于气象业务的实例。由于分组交换网是当代数据通信的重要手段之一，故该系统所采用的方法可推广到其他类似的系统中。     

南大港湿地旅游信息系统的功能模块与应用

南大港湿地旅游信息系统 (简称 NWTIS)是适应南大港湿地生态旅游需要而精心设计与开发的。系统采用 Visual Basic的语言编辑及可视化数据库管理和 Map Info的图元输出功能进行系统集成 ,开发了基于 Windows风格的 NWTIS,实现了大量属性和空间数据的查询、分析和图文显示。     

差分雷达干涉测量原理及其在形变测量中的应用

介绍了差分雷达干涉测量的原理，说明了差分雷达干涉测量的几何条件，分析了雷达卫星的基线条件、图像的相关性和相位一致问题。介绍了利用这项技术在波恩地区进行的验证实验和兰德斯地震研究的结果。建议尽快开展对差分雷达干涉测量技术的研究。     

县、市、省三级气象信息自动传输系统

气象信息自动传输系统通过借助无线电台和有线电路，利用微机和调制解调器，可以实现县、市、省三级气象信息的自动传输。作者较为详细地说明了该系统硬件的安装方法，给出了有关的电路图和程序设计框图，并简要地介绍了系统的主要功能。     

福建九龙江河口第四纪沉积物特征及沉积环境演变

根据福建九龙江河口ZK1孔及ZK7孔沉积物AMS(Accelerator Mass Spectrometry,加速器质谱测年技术) ¹⁴C测年、古地磁和剖面特征分析,进行该地区的第四纪地层划分,依据粒度特征,结合磁化率、微体古生物和Sr/Ba等环境代用指标进行沉积相分析,重建了该区晚第四纪的古环境演变历史。结果表明:(1)九龙江河口第四纪沉积时代为晚更新世中期至全新世晚期。(2)上更新统沉积可划分为下部龙海组洪冲积相和上部东山组河漫滩相沉积,中间有10 ka的沉积间断,末次冰期又再遭受风化剥蚀作用,推测有5～6 ka的风化剥蚀期。(3)全新统最早沉积年代约为14 ka BP,依次出现河口湾相、河口砂坝—分汊河道相、潮滩相沉积。(4)根据年代学数据和沉积相变化,重塑了该区晚第四纪沉积环境变化过程,为该区的第四纪研究和工程地质工作提供了参考依据。     

如何解地下水重重危机

6月26日,国土资源部、水利部向各省、自治区、直辖市及副省级城市国土资源主管部门、水利（水务）厅（局）下发关于贯彻落实《全国地面沉降防治规划（2011-2020年）》的通知。《通知》第五条指出,严格地下水资源管理,加快推进地下水超采治理。事实上,随着社会经济的发展,关于地下水资源出现的问题日渐引起公众的关注。