Wavelet Spectrum and Self-Organizing Maps-Based Approach for Hydrologic Regionalization -a Case Study in the Western United States

A. Agarwal, Maheswaran Rathinasamy, J. Kurths, R. Khosa

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Hydrologic regionalization deals with the investigation of homogeneity in watersheds and provides a classification of watersheds for regional analysis. The classification thus obtained can be used as a basis for mapping data from gauged to ungauged sites and can improve extreme event prediction. This paper proposes a wavelet power spectrum (WPS) coupled with the self-organizing map method for clustering hydrologic catchments. The application of this technique is implemented for gauged catchments. As a test case study, monthly streamflow records observed at 117 selected catchments throughout the western United States from 1951 through 2002. Further, based on WPS of each station, catchments are classified into homogeneous clusters, which provides a representative WPS pattern for the streamflow stations in each cluster.

Original languageEnglish (US)
Pages (from-to)4399-4413
Number of pages15
JournalWater Resources Management
Volume30
Issue number12
DOIs
StatePublished - Sep 1 2016

Fingerprint

Self organizing maps
regionalization
Catchments
wavelet
Power spectrum
catchment
Watersheds
streamflow
watershed
extreme event
homogeneity
prediction
station

Keywords

  • K-means technique
  • Regionalization
  • Self-organizing map
  • Ungauged catchments
  • Wavelet power spectrum

Cite this

Wavelet Spectrum and Self-Organizing Maps-Based Approach for Hydrologic Regionalization -a Case Study in the Western United States. / Agarwal, A.; Rathinasamy, Maheswaran; Kurths, J.; Khosa, R.

In: Water Resources Management, Vol. 30, No. 12, 01.09.2016, p. 4399-4413.

Research output: Contribution to journalArticle

Agarwal, A. ; Rathinasamy, Maheswaran ; Kurths, J. ; Khosa, R. / Wavelet Spectrum and Self-Organizing Maps-Based Approach for Hydrologic Regionalization -a Case Study in the Western United States. In: Water Resources Management. 2016 ; Vol. 30, No. 12. pp. 4399-4413.
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