Collaborative Research: CMG: Imaging Earth Structure with Elastic Waves by Application of the Inverse Scattering Series

在地球表面上记录的来自地震和/或人造源产生的波的信号在其特征信息中编码了关于波所经历的地下的信息。 勘探地震学的最新进展使得能够在不了解这些反射体上方介质的情况下消除混响事件并绘制地下目标的物理特性。 本计画探讨利用被动式地震台阵所记录之弹性波，以逆散射级数法直接成像深层地下构造之可行性。 将采用超越目前三维地震处理水平的高性能计算;最后，新的地震成像和反演概念和算法的这种扩展和应用将显著地推进对深部地球过程和结构的理解和知识。本研究的目的是扩展和适应最近开发的用于油气勘探和生产的地震方法，在相对较浅的地下，利用地震和地表或地表附近的人造能源来调查和确定更深的地球结构。

Signals that are recorded on the earth's surface from earthquake and/or man-made source generated waves have encoded within their character information about the subsurface the waves have experienced. Recent advances in exploration seismology allow for both removal of reverberant events and mapping of the physical characteristics of subsurface targets without knowledge of the medium above those reflectors. This project investigates the feasibility of using an inverse scattering series approach to perform direct imaging of deeper subsurface structure with elastic waves recorded by passive seismic arrays. High performance computation at a level beyond that in current three dimensional seismic processing will be employed; ultimately, this extension and application of new seismic imaging and inversion concepts and algorithms will significantly advance understanding and knowledge of deep earth processes and structure.The objective of this research is to extend and adapt recently developed seismic methods designed for hydrocarbon exploration and production, in the relatively shallow subsurface, to investigate and define much deeper earth structure using both earthquakes and man-made energy sources on or near the surface.