Correlation analysis of Standardized Precipitation Index (SPI) for the water debit and level of the Cisadane River during El Ni?o and La Ni?a years

2nd International Symposium on Marine and Fisheries Research

地球科学;农业科学

Khoir, A.N.^1 ; Rohmah, M.^1 ; Nuryadi, N.^1

Indonesian Collage State of Meteorology Climatology and Geophysics, Indonesia^1

关键词: Correlation analysis;    Downstream areas;    EL Nino;    Indonesia;    La nina;    Monthly rainfalls;    Standardized precipitation index;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/139/1/012022/pdf
DOI  :  10.1088/1755-1315/139/1/012022

学科分类：农业科学（综合）

来源: IOP

【 摘 要 】

Hydrometeorological factor causes most disaster in Indonesia, and two of them are drought and flood. This study aims to correlate Standardized Precipitation Index (SPI) 3-monthly to water debit and water level in the Cisadane River. The monthly rainfall data from Serpong and Pasar Baru rain station from 2009 to 2011 when moderate El Nino and moderate La Nina happened. The correlation analysis between debit and water level to SPI 3-monthly used rain post of Serpong to represent the condition of the upstream area and rain post of Pasar Baru to represent the condition of the downstream area. The results showed that during La Nina year, the rainfall on the upstream area of the Cisadane River influenced the increase and the decrease in water debit and water level. Meanwhile, the rainfall on the downstream area of the river has an opposite effect on the increase and the decrease of debit and water level of the Pasar Baru. On the upstream area, the correlation between rainfall and water debit is 0.8, and the correlation between rainfall and water level is also 0.8. During El Nino year, the correlation was less than 0.5.