The geomorphologic structure of hydrologic response

Abstract

A unifying synthesis of the hydrologic response of a catchment to surface runoff is attempted by linking the instantaneous unit hydrograph (IUH) with the geomorphologic parameters of a basin. Equations of general character are derived which express the IUH as a function of Horton's numbers RA, RB, and RL; an internal scale parameter LΩ and a mean velocity of streamflow v. The IUH is time varying in character both throughout the storm and for different storms. This variability is accounted for by the variability in the mean streamflow velocity. The underlying unity in the nature of the geomorphologic structure is thus carried over to the great variety of hydrologic responses that occur in nature. An approach is initiated to the problem of hydrologic similarity.

Generalized hydraulic geometry: Derivation based on a multiscaling formalism

“…This is due to the fact that basin response is expressed in terms of the sum of exponential functions and the higher-order moments are expressed as the sum of power law functions (for details, see RodriguezIturbe and Valdes [1979], Rodriguez-Iturbe and Rinaldo [1997], and Kumar [2002a, 2002b]). In the case of GNRN, due to the nonlinear nature of this routing scheme, derivation of the emerging power laws from the theoretical point of view is even more intractable.…”

A Research on a Revised Application of Unit Hydrograph Variant According to Rainfall Intensity in a Rainstorm

“…국내 적용되는 단위유량도에는 Snyder(1938), Clark(1945), Nash(1957), Dooge(1959), HYMO (Williams and Hann, 1972), SCS(1975), Nakayasu (佐藤勝夫, 1982), GIUH (Rodriguez-Iturbe and Valdes, 1979), 한국건설기술연구원(2000) 등이 있다. 이는 선형적 특성을 갖는 단위유량도 이론의 유용성과 적용의 간편성 으로 인하여 국내 도입 초창기 연구 (김상용, 1972; 건설 부, 1974; 윤용남과 선우중호, 1975; 윤용남과 심순보, 1976; 김재한과 이원한, 1980 등) 이후부터 최근 연구 (안 태진 등, 2000; 정성원과 문장원, 2001; 허창환과 이순탁, 2002; 김주철 등, 2003; 전민우, 2003; 성기원, 2008; 김홍 태와 신현석, 2009 등)까지 이어 온 것이다.…”

Génèse des débits dans les petits bassins versants ruraux en milieu tempéré : 2 - Modélisation systémique et dynamique

“…-pour la propagation des débits, le concept d'hydrogramme unitaire instantané géomorphologique (GIUH), prenant en compte explicitement la structure du réseau hydrographique (RODRIGUEZ-ITURBE et VALDÈS, 1979 ; RINALDO et RODRIGUEZ-ITURBE, 1996) : surtout intéressant pour les grands bassins, il ne sera pas davantage détaillé ici ; -pour la genèse des débits, les indices de similitude hydrologique comme les indices topographiques (KIRKBY, 1975 ;BURT et BUTCHER, 1986 ;O' LOUGHLIN, 1986) utilisés dans des modèles topo-hydrologiques pour représenter explicitement l'effet de la topographie sur les écoulements, dominant souvent celui de l'hétérogénéité des propriétés hydrodynamiques (TOPMODEL : BEVEN et KIRKBY, 1979 ;BEVEN étal., 1995).…”