Open Access
Subscription Access
Open Access
Subscription Access
Geomorphic Modelling for Small Watersheds using Principal Component Analysis
Subscribe/Renew Journal
Principal Component Analysis was carried out for grouping the different parameters into the Principal Components. To understand the behaviour of all the parameters pertaining to study areas, and to reduce the dimensionality of database, the data pertaining to twelve parameters of ten small watersheds were submitted for Principal Component Analysis. The method of components analysis, then, involves the rotation in the total variable space - an orthogonal or uncorrelated transformation wherein each of the n original variables is describable, in terms of the n new principal components. An important feature of the new components is that they account, in turn, for a maximum amount of variance of the variables. Analysis extracted three components as a Principal Components with 10 parameters, accounting for a total variance of 97.256 per cent. The first component is highly correlated with Re, Rc, Sb and Lbw accounting for 68.52 per cent variance. Second component is strongly correlated with RN accounting for 18.60 per cent variance and Third with Sc, accounting for 10.13 per cent variance. Finally, these extracted 10 parameters were used for modeling for prediction of sediment yield and runoff from selected small watersheds of Tapi basin, Maharashtra, India.
Keywords
Principal Component Analysis, Geomorphological Parameters, Morphometric Model, Small Watersheds
Subscription
Login to verify subscription
User
Font Size
Information
- Decoursey, D.G. and Deal, R.B. (1974). General aspect of multivariate analysis with applications to some problems in hydrology. Proceedings of symposium on statistical hydrology, USDA, miscellaneous publication No. 1275, Washington D.C.: 47-68.
- Haan, C.T. and Allen, D.M. (1972). Comparison of multiple regression and principal component regression for predicting water yields in Kentucky. Water Resources Research, 8(6): 1593-1596.
- Haan, C.T. and Read, H.R. (1970). Prediction of monthly seasonal and annual runoff volumes for small agricultural watersheds in Kentucky, Bulletin 711, Kentucky Agricultural Experiment Station, University of Lexington, Kentucky.
- Pondzic, K. and Trninic, D. (1992). Principal component analysis of a river basin discharge and precipitation anomaly fields associated with the global circulation. J. Hydrol.,132(1– 4):343–36.
- Kumar, V. and Satyanarayana, T. (1993). Application of principal component analysis in grouping geomorphic parameters for hydrologic modeling. J. Indian Water Resour Soc., 13(1–2):50–59
- Singh, P.K., Virendra, K., Purohit, R.C., Kothari, M. and Dashora, P.K. (2009). Application of principle component analysis in grouping geomorphic parameters for hydrological modelling.Water Res. Management, 23: 325-339 Singh, R.V. (2000). Watershed planning and management.
- Yash Publishing House, Bikaner: 470. Singh, S. (1992). Quantitative Geomorphology of the Drainage Basin, Readings on Remote Sensing Applications, T. S. Chouhan and K. N. Joshi, Eds., Scientific Publishers, Jodhpur, India.
Abstract Views: 523
PDF Views: 0