River runoff evaluation for ungauged watersheds by SWAP model. 2. Application of methods of physiographic similarity and spatial geostatistics


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Abstract

The efficiency of the methods of spatial proximity and geostatistics, as well as physico-geographic similarity, is studied as applied to the evaluation of the key model parameters of ungauged watersheds to be used in river runoff calculation by SWAP model. The target geographic objects were 323 experimental watersheds of MOPEX project. The quality of model parameter estimates and reproduction of river runoff hydrographs was analyzed in the case of the use of different similarity methods, and the order of decisions to be made was developed for the problem of river runoff calculation from an ungauged watershed for the entire area under study.

About the authors

G. V. Ayzel

Water Problems Institute

Author for correspondence.
Email: hydrogo@yandex.ru
Russian Federation, Moscow, 119333

E. M. Gusev

Water Problems Institute

Email: hydrogo@yandex.ru
Russian Federation, Moscow, 119333

O. N. Nasonova

Water Problems Institute

Email: hydrogo@yandex.ru
Russian Federation, Moscow, 119333

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