초록

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한 유역의 하천형태학적 특성은 유역의 강수-유출 관계해석에 중요한 영향을 미치며 이의 양적 서술은 유역의 물리특성 구명에 필수적인 것이라 하겠다. 본 연구에서는 금강의 3대 지류중의 하나인 갑천수계에 대해 Horton-Strahler의 방법에 의해 형태학적 특성만을 고찰하였으며 대체로 Horton의 법칙에 따라 수계조직이 발달되어 있음이 판명되었다. 본 연구에서 다룬 주 내용은 Horton의 하천 차수와 하천수, 평균하천연장 및 경사간의 관계와 누가하천연장-유역면적관계, 상대고도-상대면적관계, 비례하천차수-배수면적관계 등으로서 이들 형태학적 특성변수와 유량간의 상관성은 갑천유역내에 유량측점이 전혀 없어 분석이 불가능하였다.

Abstract ▼ AI-Helper

The stream morphological characteristics of a watershed play a significant role in the analysis of rainfall-runoff relations in a river basin and a quantitative description of these characteristics is essential for determining the appropriate values of physical parameters of a watershed which usuall...

The stream morphological characteristics of a watershed play a significant role in the analysis of rainfall-runoff relations in a river basin and a quantitative description of these characteristics is essential for determining the appropriate values of physical parameters of a watershed which usually are input data for rainfall-runoff simulation models. In this study the stream morphological characteristics of the Gab River basin, which is one of the three major tributaries of Geum River, was determined quantitatively by the Horton-Strahler's method. The result showed that the Gab River System was developed very closely to the patterns generally described by the laws of Horton. The basic relations concerning the morphological characteristics deriveed in this study are the relations of stream length, and average stream slope, the stream length-drainage area relation, relative height-relative drainage area relation, and the relation between the proportional stream order and drainage area. No correlation analysis was possible between the morphological parameters and the streamflow due to non-existence of the stage gauging stations on the Gab River System.