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前言雨量站网规划的任务是要寻求最经济的站数,满足推求一定精度的流域平均面雨量,或内插任何地点一定精度的雨量特征值,为国民经济各部门提供必要的资料。雨量站网规划工作的关键是确定合理的雨量站网密度。为了确定合理的雨量站网密度,目前各地采用了各种不同的分析计算方法,如积差法、锥体法、暴雨中心控制法和抽站法等。这些方法各有其优缺点,所得成果常不一致。近年来,国外学者卡甘(B.L.Kagan)提出采用相关统计法来确定雨量站网的合理密度。这是一种较新的分析途径,我国有些省区已采纳应用。
Foreword Rainfall station network planning task is to find the most economical number of stations to meet the accuracy of the basin to find a certain amount of rainfall, or to interpolate a certain accuracy of rainfall characteristics of any location for the various sectors of the national economy to provide the necessary information. The key to rainfall network planning is to determine the reasonable rainfall network density. In order to determine a reasonable rainfall station network density, various analytical methods have been adopted all over the country, such as the accumulative difference method, the cone method, the rainstorm center control method and the pumping station method. These methods have their own advantages and disadvantages, the results obtained often inconsistent. In recent years, foreign scholar B.L.Kagan proposed the use of relevant statistics to determine the reasonable density of rainfall network. This is a newer approach to analysis. Some provinces and autonomous regions in China have adopted the application.