Characteristics of debris avalanche deposits inferred from source volume estimate and hummock morphology around Mt. Erciyes, central Turkey

Hayakawa, Yuichi S.; Yoshida, Hidetsugu; Obanawa, Hiroyuki; Naruhashi, Ryutaro; Okumura, Koji; Zaiki, Masumi; Kontani, Ryoichi

doi:https://doi.org/10.5194/nhess-18-429-2018

Articles | Volume 18, issue 2

https://doi.org/10.5194/nhess-18-429-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

The use of remotely piloted aircraft systems (RPAS) in monitoring...

https://doi.org/10.5194/nhess-18-429-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 18, issue 2

Research article

|

07 Feb 2018

Research article |

| 07 Feb 2018

Characteristics of debris avalanche deposits inferred from source volume estimate and hummock morphology around Mt. Erciyes, central Turkey

Yuichi S. Hayakawa, Hidetsugu Yoshida, Hiroyuki Obanawa, Ryutaro Naruhashi, Koji Okumura, Masumi Zaiki, and Ryoichi Kontani

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Final revised paper (published on 07 Feb 2018)
Preprint (discussion started on 23 Mar 2017)

Interactive discussion

Status: closed

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

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RC1: 'Comments', Anonymous Referee #1, 15 May 2017
RC2: 'Comments on Morphological analysis of hummocks in debris avalanche deposits around Mt Erciyes, central Turkey Yuichi S. Hayakawa et al.', Anonymous Referee #2, 16 May 2017
AC1: 'final author comments', Yuichi S. Hayakawa, 07 Jun 2017

Peer-review completion

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

ED: Reconsider after major revisions (further review by Editor and Referees) (10 Jul 2017) by Paolo Tarolli

AR by Yuichi S. Hayakawa on behalf of the Authors (30 Sep 2017) Author's response Manuscript

ED: Referee Nomination & Report Request started (05 Oct 2017) by Paolo Tarolli

RR by Anonymous Referee #2 (17 Oct 2017)

RR by Anonymous Referee #1 (23 Oct 2017)

RR by Anonymous Referee #3 (30 Oct 2017)

Suggestions for revision or reasons for rejection

Dear editor, dear authors,
I was asked to review the article “Characteristics of debris avalanche deposits inferred from source volume estimate and hummock morphology around Mt Erciyes, central Turkey” by Hayakawa Y. S. et al. submitted for final publication in NHESS after the interactive discussion and public commenting by two referees and the editor. The paper presents a very interesting morphometric approach to characterize and analyze debris avalanche deposits in a study case in Turkey. The methodological approach seems sound and robust resulting in a promising workflow that could be very useful for other researchers dealing with the morphologic characterization of hummocks. I think the authors have strengthened considerably their work in the last version of the manuscript by addressing all the issues raised by the reviewer and especially those raised by the editor. In my opinion, in the current version of the manuscript, the relation of this study with natural hazards is emphasized and information on the accuracy of the used topographic data have been provided.
Before publication, I suggest some minor additional changes:
P. 2, L. 1: add “in” before “a different…”
P. 6, L. 29-30: Why did you use contour lines to trace the mound boundaries and not directly a shaded relief map? Is there any specific reason (e.g., shaded area…)? If so, please clarify this point
P. 7 L. 9-14: here you are stating that you used two directionality indices but, from the text, it is difficult to distinguish them. Especially the sentence “The main direction of the DAD in the study site is the north” could be misinterpreted because of the second index (displacement angle against the flow direction of DAD), if the direction is North, is identical to the first index. Could you please rephrase this paragraph?
P. 9, L. 3-16: All this paragraph, reporting accuracy evaluation through GCPs of the UAV-DEM, seems more appropriate in the methods chapter than in the results section.

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ED: Publish subject to minor revisions (review by editor) (14 Nov 2017) by Paolo Tarolli

AR by Yuichi S. Hayakawa on behalf of the Authors (05 Dec 2017) Author's response Manuscript

ED: Publish as is (13 Dec 2017) by Paolo Tarolli

AR by Yuichi S. Hayakawa on behalf of the Authors (14 Dec 2017)

Short summary

This study assesses the applicability of the RPAS-based photogrammetric approach for a high-definition geomorphometry of hummocks, i.e., characteristic morphological features in the surface of debris avalanche deposits caused by a gigantic sector collapse of a volcanic mountain body. Satellite-based topographic data were also utilized to estimate the source volume of the sector collapse. We provide new, detailed insights into the characteristics of the debris avalanche and potential hazards.