Geothermal System in Parang Wedang, Yogyakarta, Indonesia

IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY

Journal of Engineering and Technological Sciences Pub Date : 2022-07-18 DOI:10.5614/j.eng.technol.sci.2022.54.4.6

M. Iqbal, B. R. Juliarka

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Abstract

Geothermal manifestations in Parangtritis, Indonesia, known as Parang Wedang Hot Spring, indicate a geothermal system in the subsurface. This circumstance motivated our research to model the Parang Wedang geothermal system in order to determine its subsurface conditions. Geological mapping, the geophysical method, and geochemical analysis were integrated to produce a conceptual model of the Parang Wedang geothermal system. The study area consists of structural hills, karst hills, and eolian plains with andesite breccias, limestone, andesite, and sand deposits as lithological variations. The results of magnetic modeling indicate that the research area is associated with the presence of an andesite intrusion and shows a NE-SW trending geological structure that is thought to be a path for hydrothermal fluid to the surface. Geochemical analysis was performed at two hot springs with temperatures of 47 °C and 49 °C. Geothermometer calculation showed that the geothermal reservoir in Parang Wedang has a temperature of 100 to 120 °C, a depth of about 180 to 285 m, and can be classified as a low enthalpy geothermal system.

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印尼日惹Parang Wedang的地热系统

印尼Parangtritis的地热表现被称为Parang Wedang温泉，表明地下有地热系统。这种情况促使我们对Parang Wedang地热系统进行建模，以确定其地下条件。地质测绘、地球物理方法和地球化学分析相结合，形成了巴朗-韦当地热系统的概念模型。研究区由构造丘陵、岩溶丘陵和风成平原组成，岩性变化包括安山岩角砾岩、石灰岩、安山岩和砂矿床。磁性建模结果表明，该研究区域与安山岩侵入体的存在有关，并显示出NE-SW走向的地质结构，这被认为是热液流到达地表的路径。对两个温度分别为47°C和49°C的温泉进行了地球化学分析。地质温度计计算表明，Parang Wedang的地热储层温度为100至120°C，深度约为180至285米，可归类为低焓地热系统。

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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来源期刊

Journal of Engineering and Technological Sciences ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.30

自引率

11.10%

发文量

审稿时长

24 weeks

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