川滇地区上地幔顶部Pn各向异性模型

该数据集为利用Pn波层析成像方法获得的川滇地区上地幔顶部Pn各向异性模型数据。首先，向国家测震台网数据备份中心申请，以及布设地震观测台站获得地震波形数据，按地震事件截取高信噪比的Pn波震相数据，并在去均值、去趋势、波形尖灭及滤波处理后，利用Pn波层析成像方法获得各个台站下方Pn各向异性，综合分析获得川滇地区上地幔顶部Pn各向异性模型。该模型数据集可用于进一步研究川滇地区大震孕震背景、岩石圈构造演化及青藏高原扩展等重要科学问题。

This dataset comprises the top-of-the-upper-mantle Pn anisotropy model data of the Sichuan-Yunnan region derived from Pn wave tomography. First, seismic waveform data were collected by submitting applications to the National Seismograph Network Data Backup Center and deploying dedicated seismic observation stations. High signal-to-noise ratio Pn wave phase data were clipped based on individual seismic events. After preprocessing procedures including demeaning, detrending, waveform tapering, and filtering, Pn anisotropy beneath each station was resolved using Pn wave tomography, and a comprehensive analysis was conducted to establish the final top-of-the-upper-mantle Pn anisotropy model for the Sichuan-Yunnan region. This dataset can support further research on critical scientific issues such as the seismogenic background of large earthquakes in the Sichuan-Yunnan region, lithospheric tectonic evolution, and the expansion of the Tibetan Plateau.