Articles | Volume 26, issue 2
https://doi.org/10.5194/nhess-26-863-2026
https://doi.org/10.5194/nhess-26-863-2026
Research article
 | 
23 Feb 2026
Research article |  | 23 Feb 2026

Beyond and beneath displacement time series: towards InSAR-based early warnings and deformation analysis of the Achoma landslide, Peru

Benedetta Dini, Pascal Lacroix, and Marie-Pierre Doin

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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-2025-1945', Anonymous Referee #1, 11 Sep 2025
    • AC1: 'Reply on RC1', Benedetta Dini, 01 Dec 2025
  • RC2: 'Comment on egusphere-2025-1945', Maximillian Van Wyk de Vries, 13 Sep 2025
    • AC2: 'Reply on RC2', Benedetta Dini, 01 Dec 2025

Peer review completion

AR – Author's response | RR – Referee report | ED – Editor decision | EF – Editorial file upload
ED: Publish subject to minor revisions (review by editor) (17 Dec 2025) by Olivier Dewitte
AR by Benedetta Dini on behalf of the Authors (23 Dec 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (02 Feb 2026) by Olivier Dewitte
AR by Benedetta Dini on behalf of the Authors (03 Feb 2026)  Manuscript 
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Short summary
Landslides can occur without warning. Traditional satellite radar (InSAR) methods are valuable but have limitations. We show that lesser-used radar signals can act as early warning markers, revealing instability up to five years before failure in a Peruvian landslide, even when standard methods fail or underestimate displacement. These alternative radar approaches complement existing techniques and could transform early detection and targeted monitoring across large regions.
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