Articles | Volume 13, issue 3
© Author(s) 2022. This work is distributed underthe Creative Commons Attribution 4.0 License.
Earthquake ruptures and topography of the Chilean margin controlled by plate interface deformation
- Final revised paper (published on 01 Apr 2022)
- Supplement to the final revised paper
- Preprint (discussion started on 20 Dec 2021)
- Supplement to the preprint
Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor |
: Report abuse
RC1: 'Comment on se-2021-148', Anonymous Referee #1, 13 Jan 2022
- AC1: 'Reply on RC1', Nadaya Cubas, 15 Feb 2022
RC2: 'Review of manuscript se-2021-148', Anonymous Referee #2, 25 Jan 2022
- AC2: 'Reply on RC2', Nadaya Cubas, 15 Feb 2022
Peer review completion
AR: Author's response | RR: Referee report | ED: Editor decision
AR by Nadaya Cubas on behalf of the Authors (15 Feb 2022)  Author's response Author's tracked changes Manuscript
ED: Publish as is (18 Feb 2022) by Stefano Tavani
ED: Publish as is (22 Feb 2022) by Federico Rossetti(Executive Editor)
Review of the manuscript ”Earthquake ruptures and topography controlled by plate interface deformation” by Nadaya Cubas and coauthors
Cubas and coauthors present a study that focuses on interplate deformation along the Chilean subduction zone. Applying the critical taper theory, Cubas and coauthors are capable of mapping plate interface deformation. Then, they compare it with a series of long-term and short-term observables of subduction dynamics including coastal uplift, historical record of large interplate earthquakes and geodetically derived coupling. At the end of the manuscript the Authors provide a conceptual model where large megathrust earthquakes are triggered and stop in correspondence of areas of interplate deformation. This model is crucial for seismic hazard assessment as it can be potentially used for mapping areas of the megathrust that might be prone to hosting large earthquakes in the future. The subject is of course very interesting.
This paper will be of interest for the structural geologists, and geoscientists specialized in tectonics, geodynamics and seismology and I think it will be a valuable contribution for SE.
The analysis is based on the critical taper theory. The Authors use an inversion procedure that allow them to retrieve friction of the wedge, the pore pressure ratio of the wedge and the effective friction of the megathrust as described in an earlier paper.
The manuscript is well structured and clearly written. Figures are clear and supporting material is helpful for complementing this study. Motivation, procedures and quantitative analysis are clearly explained.
I have only one minor concern and few technical corrections reported below.
Authors claim that “Once nucleated, large earthquakes propagate along well localized planes”. A reader can see that for the vast majority of the cases this is true but there are also some exceptions (independently from the slip model). Slip maps of Antofagasta, Maule and Iquique show some degree of overlap with areas of distributed deformation. Even near the location of highest slip as for Maule… This observation is against the model shown in figure 6. I suggest to add a few sentences in the discussion and/or in paragraph 3.3 where Authors justify the existence of such exceptions.