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Document details - Drought vulnerability assessment and analysis for Vijaypura district, Karnataka state, India

Journal Volume 11, Issue 6, June 2022, Article 17513344 Avinash p, Anand V Shivapur , " Drought vulnerability assessment and analysis for Vijaypura district, Karnataka state, India" , International Journal of Application or Innovation in Engineering & Management (IJAIEM) , Volume 11, Issue 6, June 2022 , pp. 039-047 , ISSN 2319 - 4847.

Drought vulnerability assessment and analysis for Vijaypura district, Karnataka state, India

    Avinash p, Anand V Shivapur

Abstract

ABSTRACT Rainfall and its variations affect the cropping pattern throughout the monsoon season, and a dry spell occurs when precipitation is below normal. Rainfall is insufficient to fulfill the demands of human activities when this event happens over a prolonged period. As a result, its critical to monitor rainfall and conduct meteorological drought assessments to detect atmospheric and water availability patterns and, as a result, to estimate the likelihood of a dry spell and its severity. In the present study an effort is made to understand the drought experienced by the Vijaypura district through drought vulnerability assessment using drought codification based on the percentage of departure of rainfall from long term normal valve. The seasonal rainfall variation and meteorological drought is assessed using the monthly rainfall of Vijaypura district using 35 years (1985-2019) data. The maximum annual precipitation and monthly normal precipitation for Vijaypura district is found to be 1400 mm at Muddebihal taluk and 210 mm (August) at Vijaypura taluk. The annual precipitation is distributed as 87.98-91 mm in Pre-monsoon (January - May), 648.1-685 mm in South-west monsoon (June - September), 121.6-130 mm in North-east monsoon (October- December). Out of the average annual rainfall more than 905mm occurs during January – December of each year approximately and the coefficient of variation varies between 27.3-29% demonstrate that precipitation is pretty much stable throughout the years. The percentage of deviation from normal rainfall based on monthly rainfall data is used to measure meteorological drought, which is important for drought monitoring. The meteorological drought situation in the Vijaypura district is estimated using taluk-level rainfall data, with severe drought conditions in the B.Bagevadi, Vijaypura, Indi, Muddebihal, and Sindagi taluks. The kind of drought situation experienced in each of the talukas such as Bagewadi, Vijaypura, Indi, Muddebihal, Sindagi were determined. The study reveals that out of the 35 years the above talukas of the district experiences 16,16,18,19 and 18 years as no drought, whereas mild drought condition occurs 12, 9, 11, 10, and 7 years and moderate drought conditions 5,8,5,4 and 8 years, and severe drought conditions in 2, 2,1,2,2 years respectively. It has been found year was 1989that According to the survey, the wettest year 1989 as the wettest year with 61 percent of positive departure at Vijaypura taluk, while the driest year was 1986 with 59 percent. Keywords: ArcGIS, Meteorological drought, Vulnerability assessment, Drought mapping

  • ISSN: 23194847
  • Source Type: Journal
  • Original language: English

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