A New Development of Inversion Technique to Estimate 3-D Ground Structure using Microseism, Gravity, and Magnetic Surveys

为估计三维深部构造，提出了一种基于地脉动、重磁联合分析的新方法。为了实现快速、准确的观测，研制了观测系统和降噪算法。此外，还开发了联合反演技术，以同时分析三个不同的物理量。所提出的技术被应用到真实的领域和他们的适当性得到证实。

To estimate 3-D deep structures, a new technique for survey is proposed based on simultaneous analysis of microtremor, gravity and magnetics. Observation systems and algorithm for noise reduction are developed for quick and accurate observation. Furthermore, techniques are also developed for joint inversion to analyze three different physical quantities simultaneously. The proposed techniques are applied to real fields and their adequacies are confirmed.