Wavelet Spectrum and Self-Organizing Maps-Based Approach for Hydrologic Regionalization -a Case Study in the Western United States
- 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.
| Author details: | Ankit AgarwalORCiDGND, Rathinasamy MaheswaranORCiD, Jürgen KurthsORCiDGND, R. Khosa |
|---|---|
| DOI: | https://doi.org/10.1007/s11269-016-1428-1 |
| ISSN: | 0920-4741 |
| ISSN: | 1573-1650 |
| Title of parent work (English): | Water Resources Management |
| Publisher: | Springer |
| Place of publishing: | Dordrecht |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2016 |
| Publication year: | 2016 |
| Release date: | 2020/03/22 |
| Tag: | K-means technique; Regionalization; Self-organizing map; Ungauged catchments; Wavelet power spectrum |
| Volume: | 30 |
| Number of pages: | 15 |
| First page: | 4399 |
| Last Page: | 4413 |
| Funding institution: | Deutsche Forschungsgemeinschaft (DFG) within the graduate research training group "Natural risk in a changing world (NatRiskChange) at the University of Potsdam [GRK 2043/1]; Department of Science and Technology, India, through the INSPIRE Faculty Fellowship |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
| Peer review: | Referiert |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften |
