The Correlation of Southern Oscillation Index (SOI) with the Rainfall at Rainy and Dry Season Peak in Kintamani-Bangli Region period 1986-2015

Buletin Fisika Pub Date : 2019-09-01 DOI:10.24843/bf.2019.v20.i02.p02

Wayan Mita Restitiasih, I. K. Sukarasa, I. Yuda

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Abstract

A correlation study of the Southern Oscillation Index (SOI) on rainfall at the peak of the wet and dry season in the Kintamani-Bangli region has been carried out by taking SOI values and rainfall data for the period 1986-2015. The rainfall data used were recorded at 2 rain posts, namely Kembangsari and Kintamani. The research aimed to determine the relationship of fluctuations in the value of SOI with the intensity of rainfall, so that it can be used as a regional management plan when El Nino occurs. The method used in this study is correlation. The results obtained from the correlation that is the relationship between SOI value and rainfall in February were quite strong in the Kembangsari post with correlation coefficient of 0.409. Whereas for the Kintamani post the correlation obtained was weak with a correlation coefficient of 0.308. Then in August a weak correlation occurred in the Kembangsari post with a correlation coefficient of 0.2398 and was quite strong in the Kintamani post with a correlation coefficient of 0.4662. So that the influence of El Nino in the Kintamani area in February was more dominant in the Kembangsari post and in August at the Kintamani post.

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1986-2015年金塔马尼—邦里地区干雨季高峰降水与南方涛动指数的相关性

利用1986-2015年南方涛动指数(SOI)与降水资料，对金塔马尼-邦里地区干湿季高峰降水进行了相关性研究。所使用的降雨数据记录在两个降雨站，即肯邦萨里和金塔马尼。研究旨在确定SOI值的波动与降雨强度的关系，以便在厄尔尼诺现象发生时作为区域管理计划。本研究采用相关性分析方法。垦邦沙里哨所2月SOI值与降雨量的相关关系较强，相关系数为0.409。而对于Kintamani post，相关性较弱，相关系数为0.308。8月份，肯邦萨里哨所的相关性较弱，相关系数为0.2398，而金打马尼哨所的相关性很强，相关系数为0.4662。因此，2月和8月厄尔尼诺对金塔马尼地区的影响在肯邦萨里哨所和金塔马尼哨所更为明显。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Buletin Fisika

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24 weeks