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首页> 外文学位 >Geothermal exploration with remote sensing from 0.45--2.5 mum over Brady-Desert Peak, Churchill County, Nevada.
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Geothermal exploration with remote sensing from 0.45--2.5 mum over Brady-Desert Peak, Churchill County, Nevada.

机译：内华达州丘吉尔县布雷迪-沙漠峰上方0.45--2.5毫米范围内的遥感地热勘探。

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摘要

The purpose of this study was to use the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Hymap (hyperspectral mapper) to remotely map unique geothermal identifiers over the Brady-Desert Peak geothermal fields. Both of these instruments detect reflected solar energy in the 0.45--2.5 mum wavelength region. Geothermal-related minerals display diagnostic characteristics in this wavelength region. The Brady-Desert Peak geothermal fields are located about 80 km east of Reno, Nevada in the Hot Springs Mountains. North-northeast-striking en-echelon faults act upon Tertiary volcanic and lacustrine rocks. The 20 MWe Brady geothermal plant is located in the hanging wall of the north-northeast-striking Brady's fault and is expressed by numerous fumaroles and mudpots for a distance of over 4 km. The 6.5 MWe Desert Peak geothermal plant is located in the hanging wall of the north-northeast-striking Rhyolite Ridge fault zone, which unlike Brady's fault shows no active thermal expression. Basalt, carbonate, and lacustrine units were discriminated with image transforms applied to ASTER bands covering the 0.45--2.5mu region. Known opaline sinter outcrops were also mapped with ASTER. The Hymap data was used to identify, gypsum, carbonate, kaolinite, and rocks composed of opaline silica, all serving as unique geothermal identifiers. Mapping results were synthesized with other spatial data in a geographic information systems (GIS) data base. This led to new structural interpretations Brady-Desert Peak. The same processing methods can be applied to new ASTER and Hymap data sets for future exploration in the Great Basin, especially in areas that lack active thermal expressions.
机译：这项研究的目的是使用先进的星载热发射和反射辐射计（ASTER）和Hymap（高光谱测绘仪）在布雷迪-沙漠峰地热场上远程绘制独特的地热标识符。这两种仪器都可以检测到0.45--2.5微米波长范围内的反射太阳能。与地热有关的矿物在该波长区域显示出诊断特征。布雷迪沙漠峰地热田位于内华达州里诺市以东约80公里的温泉山中。东北走向的梯级断层作用于第三纪火山岩和湖相岩石。 20 MWe布雷迪地热发电厂位于北东北部布雷迪断层的悬挂壁上，由众多的喷气孔和泥盆表现出来，距离超过4公里。 6.5 MWe的沙漠峰地热发电厂位于东北偏北的流纹岩山脊断裂带的悬挂壁上，与布雷迪断裂不同，该断裂带没有活跃的热力表达。玄武岩，碳酸盐和湖相单元通过对覆盖0.45--2.5mu区域的ASTER波段进行图像变换来区分。已知的乳白烧结矿露头也用ASTER作图。 Hymap数据用于识别石膏，碳酸盐，高岭石和由不透明硅石组成的岩石，所有这些都是唯一的地热标识符。映射结果与地理信息系统（GIS）数据库中的其他空间数据进行了合成。这导致了新的结构解释布雷迪沙漠峰。可以将相同的处理方法应用于新的ASTER和Hymap数据集，以供将来在大盆地中勘探，尤其是在缺少有效热力表达式的地区。

著录项

  • 作者

    Kratt, Christopher B.;

  • 作者单位

    University of Nevada, Reno.;

  • 授予单位 University of Nevada, Reno.;
  • 学科 Geology.; Remote Sensing.
  • 学位 M.S.
  • 年度 2005
  • 页码 110 p.
  • 总页数 110
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地质学;遥感技术;
  • 关键词

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