A 3D Spherical ETAS Model: A Case Study in the Alaska-Aleutian Region

DOI PDF 被引用文献1件 参考文献27件 オープンアクセス
  • Yongbo Li
    1Institute of Geophysics, China Earthquake Administration, Beijing, China
  • Jiancang Zhuang
    3The Institute of Statistical Mathematics, Research Organization of Information and Systems, Tokyo, Japan
  • Shi Chen
    1Institute of Geophysics, China Earthquake Administration, Beijing, China
  • Yicun Guo
    5Key Laboratory of Computational Geodynamics, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
  • Ziyao Xiong
    6Institute of Geology, China Earthquake Administration, Beijing, China

書誌事項

公開日
2024-02-28
資源種別
journal article
DOI
  • 10.1785/0220230440
公開者
Seismological Society of America (SSA)

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説明

<jats:title>Abstract</jats:title> <jats:p>This study proposes a hypocentral version of the spherical epidemic-type aftershock sequence (ETAS) model by incorporating hypocentral depth information into the spherical ETAS model and applies it to earthquake data from the Alaska-Aleutian area. We validate the model using the stochastic reconstruction techniques and illustrate the rationale behind selecting the spatial probability density function. Subsequently, we estimate the 3D spatial variations of the background and offspring seismicity in the study region, revealing that the majority of clusters are located in shallow regions. We also identify an apparent temporal change in the background seismicity caused by artificial effects. Compared with the 3D-ETAS and spherical version of the epidemic-type aftershock sequence (SETAS) models, the new 3D-SETAS model provides a better description of 3D seismicity in high-latitude regions globally.</jats:p>

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