Statistical modelling of co-seismic knickpoint formation and river response to fault slip

Steer, Philippe; Croissant, Thomas; Baynes, Edwin; Lague, Dimitri

doi:https://doi.org/10.5194/esurf-7-681-2019

Articles | Volume 7, issue 3

https://doi.org/10.5194/esurf-7-681-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/esurf-7-681-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 7, issue 3

Research article

|

24 Jul 2019

Research article |

| 24 Jul 2019

Statistical modelling of co-seismic knickpoint formation and river response to fault slip

Philippe Steer, Thomas Croissant, Edwin Baynes, and Dimitri Lague

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Final revised paper (published on 24 Jul 2019)
Preprint (discussion started on 14 Feb 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'A very nice contribution; minor revisions', Anonymous Referee #1, 11 Mar 2019
RC2: 'My', Wolfgang Schwanghart, 11 Mar 2019
RC3: 'Review of Statistical modelling of co-seismic knickpoint formation and river response to fault slip, P. Steer, et al.', Robert Sare, 27 Mar 2019
RC4: 'Review of "Statistical modelling of co-seismic knickpoint formation and river response to fault slip" by Steer et al.', George Hilley, 04 Apr 2019
AC1: 'Response to the referee's comments', Philippe Steer, 07 Jun 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Philippe Steer on behalf of the Authors (10 Jun 2019) Manuscript

ED: Publish as is (12 Jun 2019) by Richard Gloaguen

ED: Publish as is (03 Jul 2019) by Andreas Lang (Editor)

AR by Philippe Steer on behalf of the Authors (03 Jul 2019) Manuscript

Short summary

We use a statistical earthquake generator to investigate the influence of fault activity on river profile development and on the formation of co-seismic knickpoints. We find that the magnitude distribution of knickpoints resulting from a purely seismic fault is homogeneous. Shallow aseismic slip favours knickpoints generated by large-magnitude earthquakes nucleating at depth. Accounting for fault burial by alluvial cover can modulate the topographic expression of earthquakes and fault activity.