Moeck, Inga S.

[["dc.bibliographiccitation.firstpage","228"],["dc.bibliographiccitation.journal","Geothermics"],["dc.bibliographiccitation.lastpage","239"],["dc.bibliographiccitation.volume","51"],["dc.contributor.author","Brehme, Maren"],["dc.contributor.author","Moeck, Inga"],["dc.contributor.author","Kamah, Yustin"],["dc.contributor.author","Zimmermann, Guenter"],["dc.contributor.author","Sauter, Martin"],["dc.date.accessioned","2018-11-07T09:38:41Z"],["dc.date.available","2018-11-07T09:38:41Z"],["dc.date.issued","2014"],["dc.description.abstract","In this study tectonic structural features and their hydraulic characteristics of fault zones were integrated into a consistent hydrotectonic model of the Lahendong geothermal reservoir, Indonesia. Moreover, these elements were analysed with respect to their relevance for the operation of the geothermal power plant at initial conditions, i.e. before the start of operation. The complex tectonic setting with volcanic activity provides evidence for relevant structural and hydrogeological elements, such as fault zones, surface spring discharge and joints at different spatial scales. The study area is highly variable with respect to hydraulic properties and chemical composition of the fluids. It consists of two types of fluids. Acid brine water with a pH of around 3 and an electrical conductivity ranging between 462011 mu S/cm and 9700 p,S/cm is characteristic for the reservoir in the North with temperatures up to 274 C. A moderate pH between 4 and 7, an electrical conductivity in the range of 400-1730 mu S/cm and temperatures of up to 340 C characterise the southern study area. The Lahendong geothermal field is subdivided into two sub-reservoirs. Faults are less permeable perpendicular to the strike of the faults than parallel to the strike. The characteristics of the complex reservoir system could be explained by the combination of hydrotectonics and hydrogeological parameters. Understanding the permeability distribution along fault zones is crucial to investigate subsurface fluid pathways as well as to sustainably use the reservoir. A compartmentalisation of the reservoir was derived from a stress field analysis of the tectonic elements and from hydrogeological observations. The information on underground fluid flow is essential to understand the subsurface flow of geothermal fluids. Here, the permeability of structures is identified as the limiting factor. (C) 2014 Elsevier Ltd. All rights reserved."],["dc.description.sponsorship","German Federal Ministry for Education and Research (BMBF) [03G0753A]"],["dc.identifier.doi","10.1016/j.geothermics.2014.01.010"],["dc.identifier.isi","000336778700019"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33121"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","1879-3576"],["dc.relation.issn","0375-6505"],["dc.title","A hydrotectonic model of a geothermal reservoir - A study in Lahendong, Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Geothermal Energy"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Deon, Fiorenza"],["dc.contributor.author","Förster, Hans-Jürgen"],["dc.contributor.author","Brehme, Maren"],["dc.contributor.author","Wiegand, Bettina"],["dc.contributor.author","Scheytt, Traugott"],["dc.contributor.author","Moeck, Inga"],["dc.contributor.author","Jaya, Makky S."],["dc.contributor.author","Putriatni, Dewi J."],["dc.date.accessioned","2019-07-09T11:41:55Z"],["dc.date.available","2019-07-09T11:41:55Z"],["dc.date.issued","2015"],["dc.description.abstract","Magmatic settings involving active volcanism are potential locations for economic geothermal systems due to the occurrence of high temperature and steam pressures. Indonesia, located along active plate margins, hosts more than 100 volcanoes and, therefore, belongs to the regions with the greatest geothermal potential worldwide. However, tropical conditions and steep terrain reduce the spectrum of applicable exploration methods, in particular in remote areas. In a case study from the Lamongan volcanic field in East Java, we combine field-based data on the regional structural geology, elemental and isotopic composition of thermal waters, and the mineralogical and geochemical signatures of volcanic rocks in exploring hidden geothermal systems. Results suggest infiltration of groundwater at the volcanoes and faults. After infiltration, water is heated and reacts with rocks before rising to the surface. The existence of a potential heat source is petrologically and geophysically constrained to be an active shallow mafic-magma chamber, but its occurrence is not properly reflected in the composition of the collected warmed spring waters that are predominantly meteoric in origin. In conclusion, spring temperature and hydrochemistry alone may not always correctly reflect the deep geothermal potential of an area."],["dc.identifier.doi","10.1186/s40517-015-0040-6"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12588"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58549"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","2195-9706"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Geochemical/hydrochemical evaluation of the geothermal potential of the Lamongan volcanic field (Eastern Java, Indonesia)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]