Download or read book A Study of Coso Geothermal Field California Using Local Seismic Data and Landsat Image Data written by Qiuchun Feng and published by . This book was released on 1996 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Increasing Efficiency of Geothermal Energy Generation with High Resolution Seismic Imaging written by Dimitri Bevc and published by . This book was released on 2003 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geothermal Exploration in Eastern California Using ASTER Thermal Infrared Data written by and published by . This book was released on 2010 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Monitoring at the Geysers Geothermal Field California written by Geological Survey (U.S.) and published by . This book was released on 1979 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Flow and Microearthquake Studies Coso Geothermal Area China Lake California Final Report written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present research effort at the Coso Geothermal Area located on the China Lake Naval Weapons Center, China Lake, California, was concerned with: (1) heat flow studies and (2) microearthquake studies associated with the geothermal phenomena in the Coso Hot Springs area. The sites for ten heat flow boreholes were located primarily using the available seismic ground noise and electrical resistivity data. Difficulty was encountered in the drilling of all of the holes due to altered, porous, faulted, and sometime highly fractures zones. Thermal conductivity measurements were completed using both the needle probe technique and the divided bar apparatus with a cell arrangement. Heat flow values were obtaned by combining equilibrium temperature measurements with the appropriate thermal conductivity values. Heat, in the upper few hundred meters of the subsurface associated with the Coso Geothermal Area, is being transferred by a conductive heat transfer mechanism with a value of approximately 15 .mu.cal/cm2-sec. This is typical of geothermal systems throughout the world and is approximately ten times the normal terrestrial heat flow of 1.5 HFU. The background heat flow for the Coso region is about 3.5 HFU.
Download or read book Physical Properties of Two Core Samples from Well 34 9RD2 at the Coso Geothermal Field California written by C. A. Morrow and published by . This book was released on 2006 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Gravity Model for the Coso Geothermal Area California written by and published by . This book was released on 1990 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two- and three-dimensional gravity modeling was done using gridded Bouguer gravity data covering a 45 x 45 km region over the Coso geothermal area in an effort to identify features related to the heat source and to seek possible evidence for an underlying magma chamber. Isostatic and terrain corrected Bouguer gravity data for about 1300 gravity stations were obtained from the US Geological Survey. After the data were checked, the gravity values were gridded at 1 km centers for the area of interest centered on the Coso volcanic field. Most of the gravity variations can be explained by two lithologic units: (1) low density wedges of Quarternary alluvium with interbedded thin basalts (2.4 g/cm3) filling the Rose Valley and Coso Basin/Indian Wells Valley, and (2) low density cover of Tertiary volcanic rocks and intercalated Coso Formation (2.49 g/cm3). A 3-D iterative approach was used to find the thicknesses of both units. The gravity anomaly remaining after effects from Units 1 and 2 are removed is a broad north-south-trending low whose major peak lies 5 km north of Sugarloaf Mountain, the largest of the less than 0.3 m.y. old rhyolite domes in the Coso Range. Most of this residual anomaly can be accounted for by a deep, low-density (2.47 g/cm3) prismatic body extending from 8 to about 30 km below the surface. While some of this anomaly might be associated with fractured Sierran granitic rocks, its close correlation to a low-velocity zone with comparable geometry suggests that the residual anomaly is probably caused a large zone of partial melt underlying the rhyolite domes of the Coso Range. 12 refs., 9 figs.
Download or read book Geothermal Energy Update written by and published by . This book was released on 1978 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Monitoring at the Geysers Geothermal Field California written by Geological Survey (U.S.) and published by . This book was released on 1979 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prehistoric Use of the Coso Volcanic Field written by Amy J. Gilreath and published by . This book was released on 1997 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Aperture Radar Interferometry Analysis of Ground Deformation Within the Coso Geothermal Site California written by Erik Vaughn Brawner and published by . This book was released on 2016 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earth's surface movement may cause as a potential hazard to infrastructure and people. Associated earthquake hazards pose a potential side effect of geothermal activity. Modern remote sensing techniques known as Interferometric Synthetic Aperture Radar (InSAR) can measure surface change with a high degree of precision to mm scale movements. Previous work has identified a deformation anomaly within the Coso Geothermal site in eastern California. Surface changes have not been analyzed since the 1990s, allowing a decade of geothermal production impact to occur since previously assessed. In this study, InSAR data was acquired and analyzed between the years 2005 and 2010. Acquired by the ENVISAT satellite from both ascending and descending modes. This provides an independent dataset from previous work. Incorporating data generated from a new sensor covering a more modern temporal study period. Analysis of this time period revealed a subsidence anomaly in correlation with the extents of the geothermal production area under current operation. Maximum subsidence rates in the region reached approximately 3.8 cm/yr. A similar rate assessed from previous work throughout the 1990s. The correlation of subsidence patterns suggests a linear source of deformation from measurements spanning multiple decades. Regions of subsidence branch out from the main anomaly to the North-Northeast and to the South where additional significant peaks of subsidence occurring. The extents of the deformation anomaly directly correlate with the dispersal of geothermal production well site locations. Depressurization within the geothermal system provides a leading cause to surface subsidence from excessive extraction of hydrothermal fluids. As a result of minimal reinjection of production fluids.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1979 with total page 1696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 3D Magnetotelluric Characterization of the COSO GeothermalField written by Philip E. Wannamaker and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of the subsurface electrical resistivity/conductivity can contribute to a better understanding of complex hydrothermal systems, typified by Coso geothermal field, through mapping the geometry (bounds and controlling structures) over existing production. Three-dimensional magnetotelluric (MT) inversion is now an emerging technology for characterizing the resistivity structures of complex geothermal systems. The method appears to hold great promise, but histories exploiting truly 3D inversion that demonstrate the advantages that can be gained by acquiring and analyzing MT data in three dimensions are still few in number. This project will address said issue, by applying 3D MT forward modeling and inversion to a MT data set acquired over the Coso geothermal field. The goal of the project is to provide the capability to image large geothermal reservoirs in a single self-consistent model. Initial analysis of the Coso MT data has been carried out using 2D MT imaging technology to construct an initial 3D resistivity model from a series of 2D resistivity images obtained using the inline electric field measurements (Zxy impedance elements) along different measurement transects. This model will be subsequently refined through a 3D inversion process. The initial 3D resistivity model clearly shows the controlling geological structures possibly influencing well production at Coso. The field data however, also show clear three dimensionality below 1 Hz, demonstrating the limitations of 2D resistivity imaging. The 3D MT predicted data arising from this starting model show good correspondence in dominant components of the impedance tensor (Zxy and Zyx) above 1Hz. Below 1 Hz there is significant differences between the field data and the 2D model data.
Download or read book Structural Interpretation of the Coso Geothermal Field written by C. F. Austin and published by . This book was released on 1987 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Coso Geothermal Field, located east of the Sierra Nevada at the northern edge of the high Mojave Desert in Southern California, is an excellent example of a structurally controlled geothermal resource.
Download or read book Reconnaissance Study of Coso Volcanic Field California and Pickel Meadow California written by W. Ian Ridley and published by . This book was released on 1988 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Coso Volcanic Field, California, and the Caldera at Bridgeport, California, of which Pickel Meadow is a part, have great potential for geothermal energy and associated byproduct metals development.
Download or read book An Integrated Geothermal Exploration Program for Northern California Southern Oregon written by Eureka Resource Associates and published by . This book was released on 1980 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: A broad zone characterized by recent volcanism and active hot springs extends northwards from the latitude of Lassen Peak in northern California through Oregon and Washington. These indications of abnormally high crustal temperature have stimulated commercial efforts to explore the geothermal energy potential of the region. These efforts to date have met with only limited success due to the geologic complexity of the area, rough terrain, and high rainfall which make exploration difficult and expensive. As part of an on-going program to examine the geothermal potential of the Cascades region, Eureka has recently completed a study of an area centered on the High Cascades in central Oregon (described in proposal P-8100). As a follow on to that project, we propose to conduct a second comprehensive study of the geothermal potential of an area located in northern California and southern Oregon (Figures 1 and 2). Using both published and proprietary geological and geophysical data, as well as skills developed in searching for geothermal targets in complex volcanic areas, experienced interpreters will produce tectonic and composite prospect maps of a region covering 25,900 sq.km. (approximately 10,000 sq.mi.) The project area encompasses three major geothermal resource areas (KGRA's): Klamath Falls, Klamath Falls Hills, Glass Mountain as well as Mt. Shasta, a young volcanic system believed to be underlain by a magma chamber within 10 km of the surface. (Smith & Shaw, 1978). The use of a digitally enhanced Landsat image, custom flown aeromagnetic data, gravity data and Curie point isotherm determinations, in combination with published geological and geophysical data, is a cost effective approach for evaluating and rating geothermal prospects. The resultant Geothermal Prospect Evaluation Table will help participants to decide the best locations for exploration and land acquisition. The results of this project will also help participants to select additional BLM acreage since, if the H.R.740 Amendment to the Geothermal Steam Act passes, the total allowable company land limit will be increased to 51,200 acres from the present 20,000 acres.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
