Application of reflection seismology to advanced and nontraditional problems

反射地震学在高级和非传统问题中的应用

• 批准号: 138032-2007
• 负责人: Hurich, Charles
• 金额: $ 1.06万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=422203
• 关键词: Application; reflection; seismology; advanced; nontraditional

Reflection seismology is a method of imaging the Earth's interior by introducing waves into the subsurface and timing the waves that are reflected back to the surface by changes in the Earth's properties. The process is similar that used by bats for echo location and to ultrasound used in medical imaging. Our research involves adapting present seismic techniques and developing new approaches to applying reflection seismology and similar geophysical tools to a range of nontraditional problems. One such problem is the characterization of heterogeneity in underground aquifers and oil reservoirs to help understand the flow of fluids through these systems. Another problem that we are working on is the need to develop new, more economical approaches for locating and evaluating deeper minerals deposits. To address this problem, we are taking advantage a state-of-the-art data acquisition system and applying antennae theory to develop a near real-time detection system designed to identify high quality targets for test drilling. At a larger scale we are developing approaches aimed at mapping the plumbing of large-scale magmatic systems with the objective of increased understanding of the evolution of the Earth's crust and the development and distribution of minerals deposits. This ongoing work has led to the first high-resolution images of large-scale intrusive bodies in the middle crust and combined with geological data provides strong evidence of significant crustal melting during the last stages of the continental collision in the Grenville orogen.

反射地震学是一种对地球内部进行成像的方法，方法是将波引入地下，并对地球性质变化反射回地表的波进行定时。这个过程类似于蝙蝠用于回声定位和用于医学成像的超声波。我们的研究包括调整现有的地震技术，并开发新的方法来应用反射地震学和类似的地球物理工具来解决一系列非传统问题。其中一个问题是表征地下含水层和油藏的非均质性，以帮助理解流体在这些系统中的流动。我们正在努力解决的另一个问题是需要开发新的、更经济的方法来定位和评价更深的矿藏。为了解决这个问题，我们正在利用最先进的数据采集系统，并应用天线理论开发一种近实时检测系统，旨在识别测试钻井的高质量目标。在更大的范围内，我们正在发展旨在绘制大型岩浆系统管道图的方法，目的是增加对地壳演化以及矿藏的发展和分布的了解。这项正在进行的工作已经产生了第一张中地壳大型侵入体的高分辨率图像，并结合地质数据提供了在格伦维尔造山带大陆碰撞的最后阶段发生重大地壳融化的有力证据。