Hydrochemical properties of groundwater samples in Semarang area, Java Island, Indonesia (1992, 1993, 2003, 2006, and 2007), supplement to: Putranto, Thomas Triadi; Rüde, Thomas (2016): Hydrogeological model of an urban city in a coastal area, case study: Semarang, Indonesia. Indonesian Journal on Geoscience, 3(1), 17-27

DOI

In Semarang City, groundwater has been exploited as a natural resource since 1841. The groundwater exploited in deep wells is concentrated in confined aquifers. The previous hydrogeological model was developed in one unit of aquifer and refined then by using several hydrostratigraphical units following a regional hydrogeological map without any further analysis. At present, there is a lack of precise hydrogeological model which integrates geological and hydrogeological data, in particular for multiple aquifers in Semarang. Thus, the aim of this paper is to develop a hydrogeological model for the multiple aquifers in Semarang using an integrated data approach. Groundwater samples in the confined aquifers have been analyzed to define the water type and its lateral distribution. Two hydrogeological cross sections were then created based on several borelog data to define a hydrostratigraphical unit (HSU). The HSU result indicates the hydrogeological model of Semarang consists of two aquifers, three aquitards, and one aquiclude. Aquifer 1 is unconfined, while Aquifer 2 is confined. Aquifer 2 is classified into three groups (2a, 2b, and 2c) based on analyses of major ion content and hydrostratigraphical cross sections.

The following dataset contains hydrochemical properties of groundwater samples taken from well points around Semarang area, Mid Java Province, Indonesia. All of 58 samples were taken in 1992, 1993, 2003, 2006, and 2007 using well point data from several reports from Ministry of Energy and Mineral Resources and independent consultants. We measured 20 parameters in each samples (sample id, coord X, coord Y, well depth, water level, water elevation, TDS, pH, EC, K, Ca, Na, Mg, Cl, SO4, HCO3, year, ion balance, screen location, and chemical facies). The chemical composition were tested in the Water Quality Laboratory, Universitas Diponegoro using mass spectrofotometer method.

Identifier
DOI https://doi.org/10.1594/PANGAEA.862987
Related Identifier https://doi.org/10.17014/ijog.3.1.17-27
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.862987
Provenance
Creator Putranto, Thomas Triadi; Rüde, Thomas; Irawan, Dasapta Erwin
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2016
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1131 data points
Discipline Earth System Research
Spatial Coverage (110.289W, -7.071S, 110.724E, -6.869N); Java Island, northern coast
Temporal Coverage Begin 1992-01-01T00:00:00Z
Temporal Coverage End 2007-12-31T23:59:00Z