Modelling landslide hazards under global changes: the case of a Pyrenean valley

Bernardie, Séverine; Vandromme, Rosalie; Thiery, Yannick; Houet, Thomas; Grémont, Marine; Masson, Florian; Grandjean, Gilles; Bouroullec, Isabelle

doi:https://doi.org/10.5194/nhess-21-147-2021

Articles | Volume 21, issue 1

https://doi.org/10.5194/nhess-21-147-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-21-147-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 1

Research article

|

18 Jan 2021

Research article |

| 18 Jan 2021

Modelling landslide hazards under global changes: the case of a Pyrenean valley

Séverine Bernardie, Rosalie Vandromme, Yannick Thiery, Thomas Houet, Marine Grémont, Florian Masson, Gilles Grandjean, and Isabelle Bouroullec

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Final revised paper (published on 18 Jan 2021)
Preprint (discussion started on 30 Jan 2020)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Reviewer comments', Anonymous Referee #1, 28 Feb 2020
- AC1: 'Answer to referee #1', Séverine Bernardie, 11 Jul 2020
RC2: 'Review NHES-2019-311', Anonymous Referee #2, 08 Apr 2020
- AC2: 'Answer to referee #2', Séverine Bernardie, 11 Jul 2020

Peer-review completion

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

ED: Reconsider after major revisions (further review by editor and referees) (15 Jul 2020) by Andreas Günther

AR by Séverine Bernardie on behalf of the Authors (25 Aug 2020)

ED: Referee Nomination & Report Request started (16 Sep 2020) by Andreas Günther

RR by Anonymous Referee #1 (25 Sep 2020)

Suggestions for revision or reasons for rejection

Dear Authors,
I've carefully read the revised version of your manuscript.
Overall, the paper has been improved during the review phase. It gained homogeneity and clarity. All comments and suggestions made by both reviewers were addressed. There are a few last correction suggestions listed below.
I’m still doubtful about using the Factor of Safety directly as an index for landslide hazard. I see that in the mentioned references, in some cases of deterministic analysis, is suggested to determine landslide hazard using slope stability models, resulting in the calculation of factors of safety.
Therefore, I accept the answer proposed by the Authors and I leave the decision to the Editor.

List of minor corrections:
Title: I would say “changes”
Page 1, line 18: I would say “emission scenarios”
Page 1, line 22: I would say “statistically significant”
Page 1, line 28: I would say “increasing rate”
Page 2, line 4: I would say “changes”
Page 2, line 10: I would say “Climate change affected and will affect…”
Page 2, line 13: a point is missing
Page 2, line 14: I would say “types” instead of “typologies” here and elsewhere in the text.
Page 3, line2 1-2: I would sort the references chronologically, as in the other cases.
Page 4, line 27: please define “FoS” since it is the first time it is mentioned in the text (do not consider the abstract)
Page 5, line 1: here you can use only “Fos”
Page 6, lines 18 onward: these indices should be defined. Alternatively add some references. However, the whole section 2.4 is not very clear. I would suggest another check.
Page 7, lines 2-20: I think this part could be shortened again.
Page 8, line 5: I would say “346 landslides” instead of “different landslides”
Page 9, Table 2: again, landslide type is not a predisposing factor so I suggest removing this row from the table.
Page 11, line 6: not clear the meaning of “narrative”
Page 13, Figure 3: the sum of the values related to Scenario 2 and 2100 is 100.1%. Please correct.
Page 15, lines 12-14: not very clear.
Page 27, line 26: “occurrence frequency landslide events” is not clear. Please check.
Page 29, line 13: please correct “succion”
Page 30, line 14: please correct “It imply”
Page 30, line 21: I would say “the evolution of FoS variations range from…”
Figures: In some figures, comma is used instead of point as decimal separator (e.g. in the scalebar, 2,5 km). I would suggest correcting it.

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ED: Publish subject to technical corrections (10 Oct 2020) by Andreas Günther

AR by Séverine Bernardie on behalf of the Authors (20 Oct 2020) Author's response Manuscript

Short summary

The present study evaluates the impacts of land use and climate change, based on scenarios, on landslide hazards in a Pyrenean valley from the present to 2100. The results demonstrate the influence of land cover on slope stability through the presence and type of forest. Climate change may have a significant impact because of the increase of the soil water content. The results indicate that the occurrence of landslide hazards in the future is expected to increase.