Identification of Precipitation Zones within Indus River Basin (Pakistan) by Global Wavelet Power Spectra
Identification of Precipitation Zones within Indus River Basin (Pakistan) by Global Wavelet Power Spectra
Kamran Zakaria1*, Noreen Munawar1 and Shafqat Ejaz2
ABSTRACT
Water plays same role to earth as oxygen to body. In order to safe this Globe from droughts and floods, it is essential to design a strategy for the balanced usage of water resources for urban uses and agriculture. For such purpose, Precipitation regions were recognized in river Indus basin in Pakistan by examining the rainfall frequencies with the help of global wavelet power spectra. Records from 52 rain gauges were studied and the outcomes of the whole power spectra exhibited a low annual frequency all over the basin; whereas additional frequencies are present with major significance that indicate changes in the rainfall system. While, the calculated global wavelet power spectra showed variable frequencies, they presentedodd patterns (symbolized by A and B) that might be used to portray the region. Therefore, three sub-regions with consistentprecipitation patterns were recognized as: Region A (not apparent) and Region B (south and north part of the basin) and Transition zone (central portion of basin), having both the frequencies are identified.
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