MAPGIS在遥感解译中的应用

MAPGIS是国内优秀的、集GIS功能与遥感图像处理功能于一体的软件平台。本文简要介绍了其专业图像处理子系统的基本功能，并根据笔者工作体会，总结出利用该软件开展遥感解译、制作数字化专题图的工作流程。     

DMO方法综述

DMO（倾角时差校正）是一种将非零偏移距地震道转换为零偏移距地震道的数据处理方法，主要针对地层倾角不为零的情况。通过应用DMO，共中心点道集变成以自激自收（垂直入射）定义的共深度点道集。DMO是地震资料处理中一个非常重要的流程，对DMO的发展状况和一些主要算法进行总结，各向异性DMO将有望成为今后的发展方向。     

成都数字遥测地震台网地震速报几个定位软件的比较与讨论

应用成都数字遥测地震台网数据,通过对震中距大于300千米的55次地震重新定位,对比研究成都数字遥测地震台网数据处理软件提供的几种地震定位程序以及原模拟台网使用的地震定位程序,初步认为震中距在300千米<Δ≤10°时,Genetic、Gerlor-P、Gelor-I程序优于Front和loc212程序,而Telloc、loc312程序基本不能用;震中距在10°<Δ≤20°和20°<Δ≤50°时的地震定位,Front优于loc212程序,而Telloc程序不能用.     

中子仪数据处理分析系统

针对农业气象观测站使用中子仪测定土壤湿度的有关技术问题进行了研讨，建立了仪数据处理分析系统，方便和规范了中子仪测土湿工作，并具有很强的服务功能。     

Spatial Integration,Adjustment, and Structural Transformation in Sub‐Saharan Africa: Some Linkage Pattern Changes in Ghana

In 1983, Ghana embarked on a program of structural adjustment under the auspices of the World Bank and the International Monetary Fund, to resuscitate the economy and to foster development. This paper utilizes the Lagos Plan of Action, a comprehensive, continent‐wide effort and African‐led policy strategy for the economic development of the African continent, to examine the contribution of adjustment to the development of an integrated economy in Ghana. Adjustment is examined as a form of structural transformation, as evidenced by the emergent intranational (intra‐ and inter‐sectoral) and international linkages in the formal wood processing industry, a key sector with tremendous potential for such linkages. Intranationally, this study shows that, as in the pre‐adjustment years, inter‐sectoral linkages, although important, were not dynamic enough to play a significantly galvanizing role in the nation's economic development. However, intra‐sectorally, a dramatic expansion in lumber exports led to an unprecedented constriction in the traditional forward linkage between sawmills and downstream processors. This forced the latter to depend on the informal sector for inputs. Internationally, Ghanaian firms operated as subcontractors of convenience for firms overseas (particularly in Europe) via an expanded forward linkage, reflecting a new “colonial relationship” under the program.     

地球物理勘探技术的进展

近年来，地球物理技术发展非常快，其重点可从下列几个方面进行综述：１）电子和计算机技术的迅猛发展是推动物探技术发展的源泉。２）地震装备和采集技术的时展是基于三维和高分辨率勘探的需求。３）地震资料处理从传统批处理向勘探、开发交互处理方向演变。４）面临当今信息爆炸的情况下，地震解释将综合更多的信息以降低石油勘探开发的风险。５）开采地球物理和地震反演近年来有长足的进展。６）其他学科的一些新理论和新算法已在     

新一代CDSN地震事件盘的生成

向广大地震研究人员提供数字化地震事件数据，是ＣＤＳＮ最重要的任务之一。本文详细阐述了新一代ＣＤＳＮ数据管理中心提取地震事件数据的处理过程，及地震事件盘生成程序的研制与使用方法，该程序的研制极大提高了产生ＣＤＳＮ地震事件盘的效率，并确保了其操作的正确性。     

SEED格式台站卷及带有可变头段节数据记录的实例剖析

地震数据交换标准（ＳＥＥＤ）是国际地震数据交换的一种标准格式。本文简要介绍了台站磁带的ＳＥＥＤ格式，详细分析了带有可变头段节的数据记录的结构，并给出了从带有可变头段节的数据记录中提取地震数据的实例。     

Experimental and theoretical determination of concentration profiles and influence of particle characteristics in blowing snow

Snow drift transport may cause avalanches on the roads during the periods of snowfall and strong wind. To better understand the factors influencing transport we have developed a theoretical model. This model is based on the boundary layer theory, where the particle mass conservation is considered. Assuming that the saturation is reached, the concentration profile can be represented by a negative exponential law. By means of this analysis, the influence of particle characteristics is explored through the roles of threshold friction velocity and fall velocity. Using fluid mechanics laws, an analysis of the concentration profile resulting from the effect of the wind on a particle bed was also developed. For several velocities of flow and for different kinds of particles an experimental determination of the concentration profile was achieved. We used a laser visualisation and image processing technique to carry out these experiments. The obtained results fit with the values predicted by the theoretical model.     

四点组斜率信息标准化方法的进一步应用及其物理意义的探索

本文提出了四点组斜率异常信息标准化法及其二次应用，并给出了实例的具体计算和分析结果，对其物理意义进行了探索笥的解释，量后提出了广义相空间，广义速率，广义加速率和广义力的概念，供各种地震前兆观测资料分析处理时参考。