선구조선과 하계망 패턴간의 관계에 관한 연구 - 미원·속리산 일대를 중심으로 -

Abstract

This study deals with the spatial relationship between lineament and drainage pattern in Miwon and Sokni area of Chungbuk Province, Central Korea, with methodology including DEM constructed by digital map for analysis of local watershed basin and drainage networks. The results of the study present that Bakdaecheon has highest stream order as 7th order, and next 6th order streams includes Boganfcheon, Musimcheon, Bocheongcheon, Hojeongae, Miwoncheon, Guryongcheon, Sinwuolcheon, and Yangsancheon. Bifurcation of the streams shows that Musimcheon is highest as 7.26, and average is 4.35 in study area. Though generally bifurcation may be higher as stream orders higher, bifurcation of those areas an irregular oscillation because of tectonic effects with erosional processes. Densities of drainage network and lineament structure show indicates relatively high correlation, approximately due to drainage networks which are effected by geological lineament. The lineament direction in study area presents that directions of NE-SW, NNW-SSE, E-W are more distinct in both scale and continuum with some parallel lines. This study may suggest the clue to understand geomorphological processes combining tectonic, litholgic, and climatic elements.