Articles | Volume 16, issue 7
https://doi.org/10.5194/se-16-593-2025
https://doi.org/10.5194/se-16-593-2025
Research article
 | 
02 Jul 2025
Research article |  | 02 Jul 2025

Importance of forearc topography for the triggering of aftershocks of megathrust earthquakes: insights from mechanical models and the Tohoku-Oki and Maule earthquakes

Armin Dielforder, Gian Maria Bocchini, and Andrea Hampel

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-3592', Kelin Wang, 18 Dec 2024
    • AC1: 'Reply on RC1', Armin Dielforder, 07 Feb 2025
  • RC2: 'Comment on egusphere-2024-3592', Romain Jolivet, 15 Jan 2025
    • AC2: 'Reply on RC2', Armin Dielforder, 07 Feb 2025

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Armin Dielforder on behalf of the Authors (07 Feb 2025)  Author's response 
EF by Katja Gänger (10 Feb 2025)  Manuscript   Author's tracked changes 
ED: Referee Nomination & Report Request started (13 Feb 2025) by Stefano Tavani
ED: Publish as is (01 Apr 2025) by Stefano Tavani
ED: Publish as is (05 Apr 2025) by Florian Fusseis (Executive editor)
AR by Armin Dielforder on behalf of the Authors (07 Apr 2025)  Manuscript 
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Short summary
Subduction zones feature a large elevation difference between the deep oceanic trench and the high mountains on land, which causes stress in the upper plate. We investigate how the topographic stress affects the aftershock seismicity of large subduction earthquakes using analytical and numerical stress models. We show that topographic stress has a large influence on aftershock seismicity and promoted most of the seismicity after the Tohoku-Oki (Japan) and Maule (Chile) earthquakes.
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