STUDY ON DEPENDENCE PROPERTIES OF RAINFALL DISTRIBUTIONS ON TOPOGRAPHY CONSIDERING THE THREE DIMENSIONAL STRUCTURE AND TYPES OF RAINFALL

Abstract

The purpose of this study is to analyze the relation between rainfall distribution and topography using three dimensional rainfall information of weather radar. By analyzing the distributions of three indexes of accumulated rainfall amount, accumulated rainfall time and average rainfall intensity, it is made clear how the mechanism of topographic effects on rainfall distributions is different between the types of rainfall, stratiform rainfall and convective rainfall. Additionally the three dimensional properties of topographic effects are quantified using Dependence Line on Topographic Elevations (DLTE), which represents dependence properties of rainfall distribution on topographic elevation.