Fundamental and applied studies in seismic data preconditioning and inversion

我们开发技术以获得高分辨率和准确的地下地质构造图像的能力，对于加拿大能源资源的可持续发现和管理以及对二氧化碳地质封存地点的监测至关重要。利用从活动震源地震勘测获得的波的方法目前是地下成像和监测最有效的地球物理攻击线。该研究计划的目标包括：(1)地震数据成像前预处理的数学方法和(2)地震波形反演问题的系统研究。 数据预处理定义了一组用于增加用于成像地球内部的地震波场的信息含量的技术。这些技术包括地震勘探正则化、噪声衰减和反褶积。本质上，对原始地震数据进行预处理，以产生可以很容易地映射成地球内部图像的信息。这一旅程需要定量地球物理中的数值方法和地球物理逆理论中的工具。最终目标是开发和研究先进的地球物理分析技术，以更好地成像地球内部。 拟议的研究计划对加拿大能源资源的开发、管理和监测具有重要意义。该计划试图结合波传播和地球物理信号理论中更基本的问题来回答应用地球物理中的实际问题。最后，拟议的研究计划考虑与正在攻读应用地球物理学专业的毕业生和本科生进行密切互动。

Our capacity to develop technologies to obtain highly resolved and accurate images of subsurface geological formations is essential for the sustainable discovery and management of Canadian energy resources and for monitoring of sites for geological sequestration of carbon dioxide. Methods that utilize waves acquired from active-source seismic surveys are at present time the most effective geophysical line of attack for subsurface imaging and monitoring. The goal of the proposed research program involves a methodical study of (1) mathematical methods for seismic data preconditioning prior to imaging and (2) problems of seismic waveform inversion. Data preconditioning defines a group of technologies used to increase the information content of seismic wavefields acquired for imaging the earth interior. These technologies include seismic survey regularization, noise attenuation and deconvolution. In essence, raw seismic data are preprocessed to produce information that can be easily mapped into an image of the earth interior. This journey requires numerical methods in quantitative geophysics and tools from geophysical inverse theory. The ultimate goal is to develop and study advanced geophysical analysis techniques to better image the earth interior. The proposed research program is of substantial importance for the development, management, and monitoring of Canadian energy resources. The program attempts to answer practical problems in applied geophysics in conjunction with more fundamental questions in wave propagation and geophysical signal theory. Finally, the proposed research program contemplates close interaction with graduates and undergraduates pursuing studies in applied geophysics.