Research Paper
Geography
E-ISSN No : 2454-9916 | Volume : 9 | Issue : 1 | Jan 2023
SEASONAL TREND AND SPATIAL PATTERN OF RAINFALL IN MYSURU DISTRICT Dr. Saritha K. Associate Professor of Geography, Government First Grade College, K. R. Nagara, Mysuru District, Karnataka – 571602 ABSTRACT The term Rainfall refers to the amount of rain that falls in a place during a particular period. Mysuru district has receives on an average annual rainfall is 778.4mm from 1990 to 2018. It was varies with seasons as well as in Spatial. Therefore the present paper analyse the Seasonal and Spatial trend of Rainfall in Mysuru District, for this purpose 40 (2018) rain gauge locations Monthly rainfall data has been collected between 1990 to 2018 from District Statistical Office, Mysore. Here, Simple statistical tools like percent, average and statistical techniques like Index of concentration are used and the cartographic and Arc GIS software are used for the preparation of trend lines and maps respectively. The result found that in season wise on an average about 47% of annual rainfall occurs during the South west monsoon period, it is only less than 1 percent in winter or post monsoon season. The pre monsoon rainfall is more consistence than the post or winter season rainfall. In spatial level, all taluk receives the high and low rainfall in South west monsoon season and winter season respectively. Keywords: Rainfall, Season, Region, Index of concentration (IOC) 1.0: Introduction The term Rainfall refers to the “amount of rain that falls in a place during a particular period”. Rainfall is an important element of economic growth of an area or region, especially in a country like India, where a large number of people are occupied in agricultural activities. In our study area the amount of rainfall does not show an equal distribution, either in space/region, season or in time. It varies from heavy rain to scanty in different parts of Mysuru district. It also has great seasonal and spatial variations in distribution. Therefore, the study of rainfall spatial distribution and its seasonal rhythms is very important, as the district economy is highly dependent on agriculture. 2.0: Study area: The study area extends from 11° 44' to 12° 37' North latitudes and 75° 57' to 77° 12' East longitudes. It is bound on the North by Mandya and part of Hassan districts and on the East by Chamarajanagar. Kodagu forms its western boundary and the southern portion is covered by Kerala and part of Chamarajanagar district. The total geographical area of Mysore district is 6,241 km2. The district gets more rainfall during two seasons, namely, the Southwest monsoon or Rainy season during June to September and Northeast or retreating monsoon season during October and December. Map: Location map of Mysuru District
3.0. Objectives: The present paper has the following objects. Ÿ To analyse the Determine factors of rainfall in Mysuru district. Ÿ To examine the Seasonal trend and spatial patterns of rainfall in Mysuru District from 1990 to 2018. 4.0. Methods and Materials: The present study is purely based on the secondary source of information. The data related to the rainfall at rain gauge station level have been collect because the average annual or seasonal rainfall at a place does not give sufficient information regarding its capacity to support any decision-making process. Therefore, keeping that in mind 40 rain gauge stations rainfall data has been collected from 1990 to 2018 from the District Statistical Office, Mysore. But the Rain gauge stations numbers are varies in some years. Mysuru District has 49 (07) Rain gauge station in 1990, it was decreases to 48 (08) in 2010 and further decreases to 41 (02) in 2010. The researchers have been using various statistical methods and techniques for the analysis of Seasonal and spatial trends of rainfall in Mysuru district. Such as average, Index of Concentration etc. Use the cartographic techniques and Arc GIS software for the preparation of graphs and maps respectively. SL
H.D.K ote (07)
Huns ur (04)
K.R.N agara (07)
Mysu ru (06)
Nanja ngudu (04)
Periya patna (06)
T.Nar asipur a(06)
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H.D.K ote C
Huns ur. C
K.R. Nagar a .C
Mysu ru.C
Nanja ngudu .C
Periya patna C
T.nara sipura .C
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Banka vadi
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Bettad apura
Mugu ru
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Chilk unda
Saligr ama
Elaval a
Nagan apura
Bylak uppe
Talak adu
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Beech anahall i
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Hanas oge
Varun a
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Muttu ru
Hunas uru
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Saragu ru
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Hebba lu
Jayap ura
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Ravan duru
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Taarak a
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Source: District Statistical Office, Mysore. Note: C_ Centre (2018) Copyright© 2023, IERJ. This open-access article is published under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License which permits Share (copy and redistribute the material in any medium or format) and Adapt (remix, transform, and build upon the material) under the Attribution-NonCommercial terms.
International Education & Research Journal [IERJ]
35