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PATTERNS OF WATERSHED MONTHLY RUNOFF 1
Author(s) -
Snyder W. M.,
Thomas A. W.
Publication year - 1987
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1987.tb00865.x
Subject(s) - surface runoff , watershed , grid , mathematics , hydrology (agriculture) , node (physics) , statistics , environmental science , computer science , geology , geometry , ecology , physics , geotechnical engineering , machine learning , biology , quantum mechanics
Two dimensional sliding polynomials were adapted to pattern analysis of watershed monthly rainfall and runoff. Contours of runoff in the two‐dimensional space of time and rainfall are constructed on a grid of 16 nodes whose values are determined by least squares. This method is form free, hence derived patterns are not biased to selected functional forms, but can directly represent the smoothed data. Values of the nodes are localized averages of the data constrained by required mathematical continuity across the grid of values. An advantage of the method is that the standard deviation can be calculated for each node, thus producing patterns of uncertainty of the deterministic component revealed by the data.