Global Search of PKP Precursors With Graph Neural Network: Implications for Scatterers in the Lowermost Mantle
发布时间:2025-08-31
点击次数:
- DOI码:
- 10.1029/2025gl115952
- 所属单位:
- 中国科学技术大学地球和空间科学学院
- 发表刊物:
- Geophysical Research Letters
- 刊物所在地:
- 美国
- 摘要:
- Seismic waves preceding the core phase PKIKP, known as PKP precursors, have been used to map small scatterers near the core‐mantle boundary (CMB). However, their low signal‐to‐noise ratio has required manual identification, hindering systematic and comprehensive analysis. Here, we develop GraphCursor, a model based on Graph Neural Networks (GNNs), to detect PKP precursors across multiple stations. Trained on manually picked precursors, GraphCursor identifies 37,512 precursor waveforms from 5,499 global earthquakes (2000–2024). We locate scatterers by stacking multistation probability functions
- 第一作者:
- Shang Ma
- 合写作者:
- 李泽峰, Daoyuan Sun, Yulong Su, Jiewen Li, Xu Si, Jun Zhu
- 论文类型:
- 期刊论文
- 通讯作者:
- 李泽峰
- 论文编号:
- 43
- 学科门类:
- 理学
- 一级学科:
- 地球物理学
- 文献类型:
- SCI
- 卷号:
- 52
- 期号:
- 17
- 页面范围:
- e2025GL115952
- ISSN号:
- 0094-8276
- 是否译文:
- 否
- 发表时间:
- 2025-08-31


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