Similaritas Jurnal: Sphericity Test in Hydrochemical Data, Case Study in The Southern Slope Merapi in Yogyakarta, Indonesia

Riswandi, Herry and Tania, Dina (2021) Similaritas Jurnal: Sphericity Test in Hydrochemical Data, Case Study in The Southern Slope Merapi in Yogyakarta, Indonesia. American Institute of Physics (AIP) Conference Proceedings. (In Press)

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Abstract

Multivariate statistical using ANOVA analysis on the catchment area, concentrations allow for interactions between groundwater and lithology. The analysis applies to time series data to develop the hydrochemical evolution of groundwater during the rainy and dry seasons. The hydrochemical data used is the interval data for the chemical properties of groundwater in the exact observer location. Samples were taken at the same place by sampling at different time intervals,and the selection takes at 30-day intervals in the dry season and 180-day intervals in the dry season. The method chosen is the Mauchly test, the Greenhouse-Geisser test, and the Pairwise Comparison test. The three methods are analyzed to determine how the groundwater chemical concentrations changed at 30 days and 180 days. The analysis process shows a change in the concentration value caused by time and lithology factors. The catchment area chemically in the dry season with a high SO42- and HCO3 and low K and Cl, indicating a high connectivity level. In the rainy season, with a high ratio
of HCO3 and low Cl, Rain that occurs during the rainy season is an essential mechanism for replenishing and maintaining groundwater quality. The approach used in this study allows for a practical interpretation of processes and can apply to various evaluations of hydrochemical data sets.

Item Type:	Other
Subjects:	Q Science > QE Geology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Dr., ST.MT HERRY RISWANDI
Date Deposited:	23 May 2023 13:36
Last Modified:	23 May 2023 13:36
URI:	http://eprints.upnyk.ac.id/id/eprint/35593

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