GEOLOGIC AND GEOPHYSICAL CHARACTERIZATION

地质和地球物理特征

• 批准号: 6239442
• 负责人: HERBERT H EINSTEIN
• 金额: $ 17.51万
• 依托单位: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-04-01 至 1998-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6239442
• 关键词: computer program /software; computer simulation; data collection; environmental stressor; environmental toxicology; environmental transport; field study; fresh water environment; ground water; hazardous substances; industrial waste; mathematical model; model design /development; soil; toxicant interaction; water flow; water pollution

Description: This project consists of three interconnected efforts: 1)"3-D Representation of Subsurface Conditions and Rock Fracture Flow in the Aberjona Valley"; 2)"Electromagnetic and Seismic Subsurface Characterization"; 3)"Chemical Contaminant Detection and Monitoring". The three efforts are integrated with each other and with the other Aberjona projects. The three-dimensional representation of conditions provides the link between the subsurface information obtained in the context of the Aberjona project and the planned predictive work regarding contaminant transport and contaminant interaction. This will be accomplished by using a computerized Kriging-Bayesian updating procedure. Since fracture flow is potentially very significant in the Aberjona Valley, this work will be continued through the creation of a three-dimensional fracture system model combined with individual fracture flow models and field observations. Geophysical measurement techniques will be used to extrapolate from point-wise exploration (boreholes); ground-penetrating radar and electrical resistivity techniques will be used to image subsurface electrical properties. These electrical properties can then be related to physical properties such as fluid content and orientation in the bedrock. At Mystic Lakes, ground-penetrating radar will be used to determine sedimentary layers and disturbances in the sedimentation process. Other geophysical techniques consisting of electric resistivity monitoring will be used to detect and image heavy metal contaminants in the groundwater. Since the measurement profiles can be observed at different times, it will also be possible to observe changes with time, i.e. to actually measure the contaminant transport.

描述：该项目由三项相互关联的工作组成： 1)“地下条件和岩石裂隙流的3-D表示 在阿伯霍纳山谷”；2)“电磁和地震地下 表征”；3)“化学污染物检测和监测”。 这三项努力是相互结合、相互促进的 阿伯霍纳项目。条件的三维表示 提供了获得的地下信息之间的联系 Aberjona 项目的背景和计划的预测工作 关于污染物传输和污染物相互作用。这将 通过使用计算机化的克里金-贝叶斯更新来完成 程序。由于裂缝流在 阿伯霍纳谷，这项工作将通过创建一个 三维骨折系统模型结合个体 裂缝流模型和现场观察。地球物理测量 技术将用于从逐点探索中推断 （钻孔）；探地雷达和电阻率 技术将用于对地下电特性进行成像。 这些电气特性可以与物理特性相关联 例如基岩中的流体含量和方向。在神秘湖， 探地雷达将用于确定沉积层 以及沉淀过程中的干扰。其他物探 将使用电阻率监测技术 检测地下水中的重金属污染物并对其进行成像。自从 可以在不同时间观察测量曲线，它将 也可以观察随时间的变化，即实际测量 污染物输送。