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Document Type : Latin Dissertation
Language of Document : English
Record Number : 149706
Doc. No : ET21498
Main Entry : Antony Patrick Mossop
Title Proper : SEISMICITY, SUBSIDENCE AND STRAIN AT THE GEYSERS GEOTHERMAL FIELD
Note : This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract : The Geysers is the site of a large geothermal energy project ( 1 GW) and also one ofthe most seismically active regions in northern California. In addition there has beensubstantial surface deformation in the region. Significant correlations ( 99.9th ile)are found between industrial operations and seismicity, i. e-between steam productionand shallow seismicity ( z 5 1 km), as well as between both water injection and deepseismicity (I 2 1 h), and steam production and deep seismicity. The distributionof shallow earthquakes closely matches mapped low pressures in the reservoir and theareas of maximum volume st rain inferred from surface deformat ion data, suggestingthat these events are caused by poroelastic stressing. The deep injection correlatedseismicity appears inconsistent with simple models based on changes in fracture fluidpressure. Localised t hermoelastic stress perturbations due to Liquid injection predictsresults that are more consistent with the observations. Deep production inducedseismicity is consistent with highly localised t hermoelastic stressing caused by evap-orative cooling. The inverted volume strain closely matches the mapped pressuredrops within the reservoir; the reservoir scale strain magnitudes are inconsistent witha dominant thermal contraction mechanism,tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject : Electericl tess
: برق
electronic file name : TL44670.pdf
Title and statement of responsibility and : SEISMICITY, SUBSIDENCE AND STRAIN AT THE GEYSERS GEOTHERMAL FIELD [Thesis]
 
 
 
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