Continued Development and Application of 3-D Numerical Modeling and Imaging of Earth Structure and Earthquake Source

这项研究继续开发、实施、测试和应用用于地球结构和震源的声学和弹性三维有限差分和伪谱模拟和成像的程序。该模型的应用包括同时模拟记录在弯曲折射剖面上的体波和面波数据、记录在钻孔中的数据以及全地球模拟。成像的应用包括叠加和叠前形式的三维受控震源数据的偏移，以及在时间和空间上的震源成像。这些能力将用于石油和矿产行业以及地震和构造调查。

This research continues the development, implementation, testing and application of codes for both acoustic and elastic 3- D finite-difference and pseudo-spectral modeling and imaging of both earth structure and earthquake sources. Applications of the modeling include simultaneous simulation of both body and surface wave data recorded on crooked refraction profiles, data recorded in bore-holes, and whole-earth simulations. Applications of the imaging include migration of 3-D controlled source data in both stacked and pre-stack form, and imaging of earthquake sources in both time and space. These capabilities will be used by oil and mineral industries and by earthquake and tectonic investigations.