Geophysical inverse methods for waveform data

波形数据的地球物理反演方法

• 批准号: 203101-2007
• 负责人: Pratt, Gerhard
• 金额: $ 3.67万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=366393
• 关键词: Geophysical; inverse; methods; waveform; data

Using geophysical waveform data to form images of the subsurface is akin to computer tomography methods used in medical tomography. However, due to the limitations imposed by the earth's surface, by the dramatic complexities of structural geology, and other difficulties such as waveform attenuation and anisotropy, the geophysical imaging problem is inherently difficult.The more rigourous our modelling methods are, the better the quality of the information we discover about the subsurface. By using advanced forward and inverse modelling methods we can achieve unprecedented resolution from a wide range of geophysical experiments.Practical applications for these methods include deep crustal imaging (to learn about the roots of the continental and oceanic crust), exploration for hydrocarbons and mineral resources, and high resolution engineering surveys. Most recently, some of our geophysical methods are finding application in medical tomography (in the early detection of breast cancers).

使用地球物理波形数据来形成地下的图像类似于医学断层摄影中使用的计算机断层摄影方法。然而，由于地球表面的限制，由于构造地质的巨大复杂性，以及诸如波形衰减和各向异性等其他困难，地球物理成像问题固有地困难，我们的建模方法越严格，我们发现的关于地下的信息的质量就越好。通过使用先进的正演和反演模拟方法，我们可以从广泛的地球物理实验中获得前所未有的分辨率。这些方法的实际应用包括深部地壳成像（了解大陆和海洋地壳的根源），碳氢化合物和矿产资源勘探以及高分辨率工程测量。最近，我们的一些地球物理方法正在医学断层扫描（乳腺癌的早期检测）中得到应用。