relation: https://episodesplatform.eu/eprints/1386/
title: Control of hazard due to seismicity induced by a hot fractured rock geothermal project
creator: Bommer, Julian J.
creator: Oates, Stephen
creator: Cepeda, José Mauricio
creator: Lindholm, Conrad
creator: Bird, Juliet
creator: Torres, Rodolfo
creator: Marroquín, Griselda
creator: Rivas, José
subject: Berlin field
subject: Geothermal energy production
subject: Method and procesing
description: In 2003 hydraulic stimulations were carried out in a geothermal field in eastern El Salvador, Central America, as part of a project to explore the feasibility of commercial hot fractured rock energy generation. A key requisite for this environmentally friendly energy source is that the fracturing of the hot rocks at depths of 1–2 km must not produce levels of ground shaking at the surface that would present a serious disturbance or threat to the local population. Thresholds of tolerable ground motion were inferred from guidelines and regulations on tolerable levels of vibration and from correlations between instrumental strong-motion parameters and intensity, considering the vulnerability of the exposed housing stock. The thresholds were defined in terms of peak ground velocity (PGV) and incorporated into a “traffic light” system that also took account of the frequency of occurrence of the induced earthquakes. The system was implemented through a dedicated seismograph array and locally derived predictive equations for PGV. The “traffic light” was used as a decision-making tool regarding the duration and intensity of pumping levels during the hydraulic stimulations. The system was supplemented by a small number of accelerographs and re-calibrated using records obtained during the rock fracturing.
publisher: Elsevier
date: 2006-03-03
type: Article
type: PeerReviewed
identifier:   Bommer, Julian J. and Oates, Stephen and Cepeda, José Mauricio and Lindholm, Conrad and Bird, Juliet and Torres, Rodolfo and Marroquín, Griselda and Rivas, José  (2006) Control of hazard due to seismicity induced by a hot fractured rock geothermal project.  Engineering Geology, 83 (4).  pp. 287-306. DOI: https://doi.org/10.1016/j.enggeo.2005.11.002 <https://doi.org/10.1016/j.enggeo.2005.11.002>     
relation: http://dx.doi.org/10.1016/j.enggeo.2005.11.002
relation: doi:10.1016/j.enggeo.2005.11.002