Validation of digital elevation models (DEMs) and comparison of geomorphic metrics on the southern Central Andean Plateau

Purinton, Benjamin; Bookhagen, Bodo

doi:https://doi.org/10.5194/esurf-5-211-2017

Articles | Volume 5, issue 2

https://doi.org/10.5194/esurf-5-211-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/esurf-5-211-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 5, issue 2

Research article

|

13 Apr 2017

Research article |

| 13 Apr 2017

Validation of digital elevation models (DEMs) and comparison of geomorphic metrics on the southern Central Andean Plateau

Benjamin Purinton and Bodo Bookhagen

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Final revised paper (published on 13 Apr 2017)
Supplement to the final revised paper
Preprint (discussion started on 01 Feb 2017)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review: Validation of digital elevation models (DEMs) and comparison of geomorphic metrics on the southern Central Andean Plateau', Stuart Grieve, 07 Feb 2017
- AC1: 'Response to RC1 by S. Grieve', Benjamin Purinton, 24 Feb 2017
RC2: 'Review of "Validation of digital elevation models (DEMs) and comparison of geomorphic metrics on the southern Central Andean Plateau” by Benjamin Purinton and Bodo Bookhagen', Anonymous Referee #2, 10 Feb 2017
- AC2: 'Response to RC2 by Anon', Benjamin Purinton, 24 Feb 2017
EC1: 'AE comment', Simon Mudd, 13 Mar 2017
- AC3: 'Response to Final Editor Comment', Benjamin Purinton, 19 Mar 2017

Peer-review completion

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

AR by Benjamin Purinton on behalf of the Authors (19 Mar 2017) Author's response Manuscript

ED: Publish subject to minor revisions (review by Editor) (23 Mar 2017) by Simon Mudd

AR by Benjamin Purinton on behalf of the Authors (28 Mar 2017) Author's response Manuscript

ED: Publish as is (28 Mar 2017) by Simon Mudd

ED: Publish as is (28 Mar 2017) by Tom Coulthard (Editor)

AR by Benjamin Purinton on behalf of the Authors (28 Mar 2017)

Short summary

We evaluate the 12 m TanDEM-X DEM for geomorphometry and compare elevation accuracy (using over 300 000 dGPS measurements) and geomorphic metrics (e.g., slope and curvature) to other modern satellite-derived DEMs. The optically generated 5 m ALOS World 3D is less useful due to high-frequency noise. Despite improvements in radar-derived satellite DEMs, which are useful for elevation differencing and catchment analysis, lidar data are still necessary for fine-scale analysis of hillslope processes.