• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Pure and Applied Geophysics >Utilizing 2D Electrical Resistivity Tomography and Very Low Frequency Electromagnetics to Investigate the Hydrogeology of Natural Cold Springs Near Virginia City, Southwest Montana
【24h】

Utilizing 2D Electrical Resistivity Tomography and Very Low Frequency Electromagnetics to Investigate the Hydrogeology of Natural Cold Springs Near Virginia City, Southwest Montana

机译：利用2D电阻断层扫描和非常低频电磁学，调查弗吉尼亚州西南蒙大拿州弗吉尼亚城附近的天然冷弹簧的水文

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Virginia City, Montana, is located in the northern Rocky Mountains of the United States. Two natural springs supply the city's water; however, the source of that water is poorly understood. The springs are located on the east side of the city, on the edge of an area affected by landslides. 2D electric resistivity tomography (ERT) and very low frequency electromagnetics (VLF-EM) were used to explore the springs and landslides. Two intersecting 2D resistivity profiles were measured at each spring, and two VLF profiles were measured in a landslide zone. The inverted 2D resistivity profiles at the springs reveal high resistivity basalt flows juxtaposed with low resistivity volcanic ash. The VLF profiles within the landslide show a series of fracture zones in the basalt, which are interpreted to be a series of landslide scarps. Results show a strong correlation between the inferred scarps and local topography. This study provides valuable geological information to help understand the source of water to the springs. The contact between the fractured basalt and the ash provides a sharp contrast in permeability, which causes water to flow along the contact and discharge at outcrop. The fracture zones along the scarps in the landslide deposits provide conduits of high secondary permeability to transmit water to the springs. The fracture zones near the scarps may also provide targets for municipal supply wells.
机译：弗吉尼亚州市蒙大拿州位于美国北罗基山区。两个天然泉水供应城市的水;然而，那种水的来源很糟糕地理解。泉水位于城市东侧，位于受山体滑坡影响的区域的边缘。 2D电阻率断层扫描（ERT）和非常低频电磁（VLF-EM）用于探索弹簧和滑坡。在每个弹簧处测量两个交叉的2D电阻率曲线，并在滑坡区测量两个VLF型材。弹簧处的倒置的2D电阻率曲线显示出用低电阻率火山灰并置的高电阻率玄武岩流。 Landslide内的VLF曲线显示玄武岩中的一系列骨折区域，这被解释为一系列滑坡围巾。结果表明推断轴和局部地形之间的强烈相关性。本研究提供了有价值的地质信息，以帮助了解水源到泉水。裂缝玄武岩和灰器之间的接触提供了透露性的鲜明对比度，这导致水沿着露头的接触和放电流动。沿滑坡沉积物中围绕围绕的裂缝区域提供高次级渗透性的导管，以将水传递到弹簧上。围巾附近的骨折区域还可为市政供应井提供目标。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号