Direct Inversion of Polarization Anomalies for the LaterallyHeterogeneous Velocity Structure of the Lithosphere

本研究是利用短脉冲的偏振方向 周期P波，以调查横向不均匀性， 岩石圈 最近对偏振方向的测量 已经表明，可以获得稳定的结果，精度为 大约5度，这些方向有时 系统地不同于射线理论的预测， 横向均匀的压缩速度结构。 横向 偏振方向非均匀性 异常具有描绘速度异常的潜力 与活跃的断层带有关 这项研究是 国家地震减灾计划。

This research is to utilize the polarization direction of short period P waves to investigate lateral heterogeneities in the lithosphere. Recent measurements of the polarization direction have shown that stable results can be obtained with a precision of about 5 degrees, and that these directions are sometimes systematically different from ray theoretical predictions based on a laterally homogeneous compressional velocity structure. Lateral heterogeneities mapped by means of the polarization direction anomalies have the potential to delineate velocity anomalies associated with active fault zones. This research is a component of the National Earthquake Hazard Reduction Program.