Long Term Fluctuations and Global Teleconnections in the Monsoonal Rainfall and Associated Floods of the Mahi Basin : Western India

Authors(2) :-Uttam V. Pawar , Pramodkumar S. Hire

This paper examines the long term fluctuations and global teleconnections in the monsoonal rainfall and associated floods of the Mahi Basin from western India. In order to analyze rainfall and associated floods, the rainfall data for monsoon season of the Mahi Basin have been obtained for last 149 years (1857-2005) from India Meteorological Department (IMD), Pune. The discharge data of the Wanakbori site, procured from Kadana Dam flood control cell, have been used to show its association with the monsoonal rainfall. Time series analysis, percent departure from mean, Normalized Accumulated Departure from Mean (NADM), Mann-Kendall test and conditional probability technique for El Nino and Southern Oscillation (ENSO) have been used for the analyses of monsoonal rainfall data of the Mahi Basin and its effect on floods. The results indicate year to year variations in the monsoon rainfall with significant departure from mean rainfall of the Mahi Basin. It is observed that majority of the floods are associated with positive departure from mean rainfall. The NADM shows epochal behavior of high and low monsoon rainfall of the basin and the Mann-Kendall test reveals statistically significant decreasing trend in the monsoon rainfall of the basin. The analysis of ENSO reveals that the probability of the occurrence of the floods in the Mahi basin is high during cold (La Nina) event than warm (El Nino) event.

Authors and Affiliations

Uttam V. Pawar
Department of Geography, HPT Arts and RYK Science College, Nashik, Maharashtra, India
Pramodkumar S. Hire
Department of Geography, HPT Arts and RYK Science College, Nashik, Maharashtra, India

Mahi Basin, monsoonal rainfall, global teleconnection, rainfall trend, floods

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Publication Details

Published in : Volume 5 | Issue 1 | January-February 2018
Date of Publication : 2018-01-20
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 240-242
Manuscript Number : IJSRST185147
Publisher : Technoscience Academy

Print ISSN : 2395-6011, Online ISSN : 2395-602X

Cite This Article :

Uttam V. Pawar , Pramodkumar S. Hire, " Long Term Fluctuations and Global Teleconnections in the Monsoonal Rainfall and Associated Floods of the Mahi Basin : Western India, International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 5, Issue 1, pp.240-242, January-February-2018. Available at doi : 10.32628/IJSRST185147
Journal URL : http://ijsrst.com/IJSRST185147

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