The 410‐ and 660‐km discontinuities define the top and bottom of the mantle transition zone (MTZ). The properties of these mineralogical phase transformation interfaces provide critical constraints on the dynamics, temperature, and composition of the MTZ. Triplicated body waves that bottom near these discontinuities carry rich information about them. To streamline the modeling of upper‐mantle triplications recorded at regional distances (13°–30°), we have developed a (Fast) Message Passing Interface (MPI)‐accelerated 1D (Tr)iplication Waveform (I)nversion (P)ackage (FastTrip). With triplication waveform data as input, FastTrip uses a global search method to output a set of acceptable 1D velocity models. Quantitative estimation of the model uncertainties can be further derived based on the range of acceptable models. FastTrip supports central processing unit (CPU) parallel acceleration (15,000 models within 2 hr with 100 CPUs) and is portable to other inversion problems that can be described by a relatively small number of model parameters.

中文翻译：

---

FastTrip：用于限制地幔过渡带不连续性的快速 MPI 加速一维三次波形反演包

410 公里和 660 公里的不连续性定义了地幔过渡带 (MTZ) 的顶部和底部。这些矿物相变接口的特性为 MTZ 的动力学、温度和组成提供了关键约束。在这些不连续点附近底部的三次体波携带有关它们的丰富信息。为了简化在区域距离（13°–30°）记录的上地幔三次重复的建模，我们开发了（快速）消息传递接口（MPI）加速一维（Tr）重复波形（I）反转（P）封装（快速旅行）。以三次波形数据作为输入，FastTrip 使用全局搜索方法输出一组可接受的一维速度模型。基于可接受模型的范围，可以进一步推导出模型不确定性的定量估计。