Development of rainfall intensity-duration-frequency relationships and nomographs for selected stations in Maharashtra, India

IF 0.7 4区 地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES MAUSAM Pub Date : 2023-07-03 DOI:10.54302/mausam.v74i3.6302
Shikha G. Anand, Pravendra Kumar, Manish Kumar
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引用次数: 0

Abstract

The rainfall intensity-duration-frequency (IDF) relationship plays an important toolin planning,designing, evaluatingand operatingof water resource projects, water resources development and management.It is necessary to examine the location-specific relationship between rainfall components, intensity, duration and frequency due to their spatiotemporal variation. In this article, weinvestigate the relationship between the rainfall intensity and its components and develop nomographs for Washim, Chandrapur and Yeotmal districts in Maharashtra, India. We also studied the rainfall charts of various stations for maximum annual rainfall intensities of selected duration. The frequency lines are computed for the above locations.. An empirical studyisconducted to determine the value of constants ‘a’ and ‘b’ and that of ‘K’ (Nemec, 1973).The nomographs are also developed for the rainfall intensity-duration-frequency (IDF) relationships (Luzzadar, 1964). Adequacy of the results istested by statistical indices such as integral square error, correlation coefficient, percent absolute deviation and root mean square error. The variation between nomographic solutions and mathematical equations lies within the permissible limit, less than 20%.
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印度马哈拉施特拉邦选定站点的降雨强度-持续时间-频率关系和列线图的发展
降雨强度-持续时间-频率(IDF)关系在水资源项目的规划、设计、评估和运营、水资源开发和管理中发挥着重要作用。由于其时空变化,有必要研究降雨成分、强度、持续时间和频率之间的特定位置关系。本文研究了印度马哈拉施特拉邦Washim、Chandrapur和Yeotmal地区的降雨强度及其组成之间的关系,并绘制了列线图。我们还研究了不同站点在选定持续时间内的最大年降雨强度的降雨图。频率线是为上述位置计算的。。进行了一项实证研究,以确定常数“a”和“b”的值以及“K”的值(Nemec,1973)。还开发了降雨强度-持续时间-频率(IDF)关系的列线图(Luzzadar,1964)。结果的充分性通过积分平方误差、相关系数、绝对偏差百分比和均方根误差等统计指标来检验。列线图解和数学方程之间的变化在允许的限度内,小于20%。
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来源期刊
MAUSAM
MAUSAM 地学-气象与大气科学
CiteScore
1.20
自引率
0.00%
发文量
1298
审稿时长
6-12 weeks
期刊介绍: MAUSAM (Formerly Indian Journal of Meteorology, Hydrology & Geophysics), established in January 1950, is the quarterly research journal brought out by the India Meteorological Department (IMD). MAUSAM is a medium for publication of original scientific research work. MAUSAM is a premier scientific research journal published in this part of the world in the fields of Meteorology, Hydrology & Geophysics. The four issues appear in January, April, July & October.
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