인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract Natural catchments are supposed to obey both energy and mass conservations. As two conservation principles are related through evapotranspiration, the ideal energy partitioning at the equilibrium state also determines the mass partitioning. A fundamental question is how the incoming energy (solar radiation) and mass (precipitation) are distributed at the balancing state. We hypothesize that received energy and mass are distributed following the principle of maximum entropy production (MEP). Further, the resultant balancing state is anticipated to vary with environmental and physiographical settings, and vegetation phenology. This idea was thoroughly investigated, taking 14 humid catchments located over South Korea and Kyushu, Japan, covering wide ranges of precipitation, evapotranspiration, and temperature. Annual evapotranspiration estimated following the MEP principle indeed well agrees with evapotranspiration from global products, for every catchment. Annual Bowen ratio is found nearly invariant over years for a catchment, reflecting the phenological, physical, and physiographical characteristics of a humid catchment. The ratio exhibits the systematic variation following the climatic gradient of the region. In mass partitioning, clear 1:1 relationship between annual runoff Q and precipitation P , offset by the base loss L o which equals to the mean annual loss, was found. This relationship is restated as the one-to-one relationship between two dimensionless measures as Q / L o = P / L o − 1. The threshold of L o forms another characteristic constant of a catchment, and is associated with the mean annual Bowen ratio of the catchment.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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