Millennial-scale denudation rates in  the Himalaya of Far Western Nepal

Ojha, Lujendra; Ferrier, Ken L.; Ojha, Tank

doi:https://doi.org/10.5194/esurf-7-969-2019

Articles | Volume 7, issue 4

https://doi.org/10.5194/esurf-7-969-2019

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

https://doi.org/10.5194/esurf-7-969-2019

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

Articles | Volume 7, issue 4

Research article

|

11 Oct 2019

Research article |

| 11 Oct 2019

Millennial-scale denudation rates in the Himalaya of Far Western Nepal

Lujendra Ojha, Ken L. Ferrier, and Tank Ojha

Download

Final revised paper (published on 11 Oct 2019)
Supplement to the final revised paper
Preprint (discussion started on 26 Feb 2019)
Supplement to the preprint

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'Review', Anonymous Referee #1, 28 Mar 2019
- AC1: 'Response to Reviewer 1', Lujendra Ojha, 04 Jun 2019
- AC6: 'Response to Reviewer 1', Lujendra Ojha, 04 Jun 2019
RC2: 'Review of Ojha et al.', Anonymous Referee #2, 29 Mar 2019
- AC2: 'Response to Reviewer 2', Lujendra Ojha, 04 Jun 2019
- AC5: 'Response to Reviewer 2', Lujendra Ojha, 04 Jun 2019
RC3: 'Review notes “Millennial-scales denudation rates in the Himalaya of Far Western Nepal” by Ojha et al.', Maarten Lupker, 02 Apr 2019
- AC3: 'Response to Reviewer 3', Lujendra Ojha, 04 Jun 2019
AC4: 'Response to Reviewer 1', Lujendra Ojha, 04 Jun 2019

Peer-review completion

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

AR by Lujendra Ojha on behalf of the Authors (04 Jun 2019) Author's response Manuscript

ED: Referee Nomination & Report Request started (26 Jun 2019) by Sebastien Castelltort

RR by Maarten Lupker (12 Jul 2019)

Suggestions for revision or reasons for rejection

This is the second time I see this manuscript. I am mostly satisfied with the revisions and responses the authors made to my own comments. I also think that they have made fair and constructive responses to the two other reviewers’ comments (many of which were common to the 3 reviews). I, therefore, think that this paper is clear, well written and is in a good state to be published even though the dataset remains of modest size and the study not as ambitious as could have been.

I have a few remaining comments:
- I don’t think that analyzing all sampled Qz grain-sizes for 10Be is necessarily more representative or better than a given fraction in particular as mentioned in the response to the reviewers. If the aim is to integrate the entire transported sediment load, pebble grain-sizes and above should be considered which remains difficult. A single sample from a bar is also unlikely to be a good representation of the transported load as it will be strongly dependent on local hydrological conditions. On the other hand, a unique grain-size class allows for better comparison between studies since it has been shown on different occasions that 10Be concentrations are grain-size dependent.
- “We are unaware of measurements of erodibility of each lithology in these basins”: Attal and Lavé, 2006 (GSA Special paper 398) provide bedload abrasion rates of various lithologies from very nearby central Nepal…
- This has probably a very minor impact on the final values but upon reading the paper again I wondered if the permanent snow cover assumed for elevation above 4920m is justified. I am mainly thinking of the northern part of the catchments on the dry Tibetan plateau.

Looking forward to seeing the final paper published.

Maarten Lupker

Hide

ED: Publish subject to minor revisions (review by editor) (21 Jul 2019) by Sebastien Castelltort

AR by Lujendra Ojha on behalf of the Authors (02 Aug 2019) Author's response

ED: Publish as is (12 Aug 2019) by Sebastien Castelltort

ED: Publish as is (16 Aug 2019) by Niels Hovius (Editor)

AR by Lujendra Ojha on behalf of the Authors (27 Aug 2019) Manuscript