苏州运河水质的TM分析

本文利用苏州地区陆地卫星TM数据和同期的地面水质监测资料建立了TM图像遥感水质模型,并将该模型应用于TM可见光彩色合成图像的分割处理,得到苏州地区水质空间分布图像。结合苏州运河水网的水文及水污染特征对遥感水质空间分布图像作了分析。结果表明TM数据真实地反映了苏州地区水质的空间分布规律,并得到当地环境监测部门的验证。     

中国地震报告数据处理系统

地震观测报告是一份具有广泛使用价值的地震基础资料。中国地震报告数据处理系统是提高中国地震报告质量的关键一环。其主要水平反映在:数据采集和处理自动化;采用最先进的数值计算方法;采用最先进的激光照排技术;用磁介质进行数据传递。     

地震预报实用化系统概况

近年来,国家地震局分析中心先后完成了一系列有地震预报的计算机处理系统。为了使这些计算机系统充分发挥作用。为了把这些分散的系统连接在一起,发挥整体效益,我们已把有关的系统连接在一起,构成统一的整体,称作地震预报实用化系统。本文介绍此系统的主要构成及主要功能,数据流程及全国数据库等情况。     

北京及其周围地区重力重复测量资料的研究

针对北京及其周围地区重复重力测量资料所进行的重力非潮汐信息的处理程式，对该区１９８４－１９８８年期间重力变化机制进行了研究。结果表明，地下水位的变化是１９８４－１９８８年期间北京及其周围地区影响重力重复测量的主要因素。校正后的重力资料显示出，１９８７－１９８８年在北京以西地区策略变化比东部地区的变化幅值大。据分析，这种变化可作为研究１９８９年大同地震的地震孕育场依据之一。     

用图像处理技术研究油气田的航磁航放异常

用图像处理技术对下述与油气田异常有关的问题进行了研究：快速提取高频弱磁异常，估算高频磁异常源的埋深，放射性异常性质的归一化处理，典型异常剖面的分析，以及油气远景评价，提出了４个有希望含油气的异常．经验证，这４个异常中有３个见到油气显示，其中１个为工业气流．     

G-856质子旋进式磁力仪-PC-1500计算机野外数据处理系统

本文介绍了G-856质子旋进式磁力仪-PC-1500计算机野外数据处理系统的通讯接口硬件设计原理,数据采集和数据处理方法。本系统是野外数据处理的综合软件,解决了当前野外磁法测量中大量的数据处理问题。     

Characterization of sediments in an abandoned mining area; a case study of Mansfeld region,Germany

The distribution of selected heavy metals, including some radionuclides, metalloids and non-metals was determined in stream sediments in a region influenced by abandoned copper mining and ore processing activities. A considerable amount of the ore processing waste with a very complex composition and highly elevated concentrations of zinc, sulfur, lead, copper, arsenic, and a lot of other elements in the range between 100 and 1,000 mg/kg (Sb, Mn, Ni, Cr, Cd, Hg, and Ag) was piled up on mine dumps. The dispersion of the pollutants originating from this source and their environmental impact were investigated. Both, sediments and original waste material were studied to indicate the pathways and the mobilization behavior of different pollutants. For this purpose, the process of the elution of pollutants by application of different fractionation schemes was studied. The capabilities of different analytical techniques are shown for the analysis of solid samples (X-ray fluorescence spectrometry, Gamma-spectrometry) and liquid ones (ICP-atomic emission spectrometry, ICP-mass spectrometry and different techniques of atomic absorption). Additionally, the coupling of ion chromatography and ICP-MS detection was used to study the distribution of arsenic species in the sediment cores of a lake which acts as a natural sink for the region.     

起伏地形剖面重磁异常半智能处理解释软件及应用

简要介绍了起伏地形剖面重磁异常半智能处理解释软件的基本原理和方法技术,及其系统实现方法和主要功能,并对云南某地的实测航磁剖面进行了最优化正反演计算。     

地球化学数据多元模式识别技术

地球化学数据多元模式识别技术能够实现“关系地球化学”的概念,来提取各种不同类型及不同元素组合的成矿异常信息。通过简要介绍模式识别的基本原理和应用于地球化学数据处理分析的数学模型和算法,探讨地球化学数据多元模式识别中几个重要的技术关键问题,并用实例来说明模式识别技术在地球化学数据计算分析中良好的应用效果。     

Optimization of Time Data Codification and Transmission Schemes: Application to Gaia

Gaia is an ambitious space observatory devoted to obtain the largest and most precise astrometric catalogue of astronomical objects from our Galaxy and beyond. On-board processing and transmission of the huge amount of data generated by the instruments is one of its several technological challenges. The measurement time tags are critical for the scientific results of the mission, so they must be measured and transmitted with the highest precision – leading to an important telemetry channel occupation. In this paper we present the optimization of time data, which has resulted in a useful software tool. We also present how time data is adapted to the packet telemetry standard. The several communication layers are illustrated and a method for coding and transmitting the relevant data is described as well. Although our work is focused on Gaia, the timing scheme and the corresponding tools can be applied to any other instrument or mission with similar operational principles.