地理系统定位站研究的原则和方法(三)

6.地理系统的数学模拟原则人们对地理学有个陈旧的概念,认为地理学最有社会价值的成分就是描述事实,它主要靠经验思维。地理学是研究地理系统的科学。过去地理学家们研究的是系统的表现,而不是引起这种或那种现象的机理和原因。要研究现象的机理和因果联系也可利用逻辑推理作定性分析,但是只有对它进行了定量分析后才更有说服力,这就必须运用数学方法。在与数学有传统联系的学科,如物理学中,电子计算机的出现并没引起任何形式的“数不热潮”。     

热异常技术——一种勘探油气的新方法

swift能源公司是位于休斯敦的一个独立的美国油气生产者,几年前它就意识到在90年代的前5年中原油和天然气的价格周期将导致油品价格有较大幅度提高。因此它就开始研究把一种专门技术发展成一些新的勘探技术,以便为勘探和开发美国油气储量提供一种有竞争力的手段。用于水平钻井和先进地震资料处理的一些技术已引起了广泛的注意。此外,swift公     

苏联低层次经济区划问题

苏联在阐述有关生产力发展任务时,要求充分考虑全国的空间特点。只有充分重视空间分布特征才能在不同程度上实现国家多种多样的发展计划,提高劳动生产率,合理利用资源,保护环境,改善工作和生活条件。在这些与调查研究区综合体相互联系的工作中,地理学理应起重要作用。     

Surface Pressure and Summer Monsoon Rainfall over India

The relationship between the all-India summer monsoon rainfall and surface pressure over the Indian region has been examined to obtain a useful predictor for the monsoon rainfall. The data series of all-India monsoon rainfall and the mean pressures of three seasons before and after the monsoon season as well as the winter-to-spring pressure tendency (MAM-DJF) at 100 stations for the period 1951-1980 have been used in the analysis.The all-India monsoon rainfall is negatively correlated with the pressure of the spring (MAM) season preceding the monsoon and winter-to-spring seasonal difference as pressure tendency (MAM-DJF), at almost all the stations in India, and significantly with the pressures over central and northwestern regions. The average mean sea level pressure of six stations (Jodhpur, Ahmedabed, Bombay, Indore, Sagar and Akola) in the Western Central Indian (WCI) region showed highly significant (at 1% level) and consistent CCs of-0.63 for MAM and -0.56 for MAM-DJF for the period 1951 - 1980. T     

Demography and cultural ecology of the Atlas Mountains of Morocco: some new hypotheses

The hypothesis is developed that the concentration of population in the mountains of Morocco is due to the existence of considerable resources in the region, and not because of its attraction as a place of refuge. The need to include the mountain region in today's development process is stressed. (SUMMARY IN FRE AND GER)