Articles | Volume 12, issue 11
© Author(s) 2021. This work is distributed underthe Creative Commons Attribution 4.0 License.
3D crustal structure of the Ligurian Basin revealed by surface wave tomography using ocean bottom seismometer data
- Final revised paper (published on 19 Nov 2021)
- Supplement to the final revised paper
- Preprint (discussion started on 07 May 2021)
- Supplement to the preprint
Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor |
: Report abuse
RC1: 'Comment on se-2021-55', Anonymous Referee #1, 02 Jun 2021
- AC1: 'Reply on RC1', Felix Noah Wolf, 08 Oct 2021
RC2: 'Comment on se-2021-55', Anonymous Referee #2, 09 Aug 2021
- AC2: 'Reply on RC2', Felix Noah Wolf, 08 Oct 2021
EC1: 'Editor's Comments on se-2021-55', M. R. Handy, 13 Aug 2021
- AC3: 'Reply on EC1', Felix Noah Wolf, 08 Oct 2021
Peer review completion
AR: Author's response | RR: Referee report | ED: Editor decision
AR by Felix Noah Wolf on behalf of the Authors (08 Oct 2021)  Author's response Author's tracked changes Manuscript
ED: Publish subject to minor revisions (review by editor) (13 Oct 2021) by M. R. Handy
AR by Felix Noah Wolf on behalf of the Authors (14 Oct 2021)  Author's response Author's tracked changes Manuscript
ED: Publish as is (18 Oct 2021) by M. R. Handy
ED: Publish as is (19 Oct 2021) by CharLotte Krawczyk(Executive Editor)
Overall this is a high-quality manuscript that provides information on additional pre-processing requirements for OBS data, and performs a group and shear velocity inversion using ambient noise data and teleseisms. The authors use a new OBS dataset (LOBSTER) that is located in relatively shallow water compared to previous studies (~1000 – 2000 m depth) and find the fundamental mode is not always the most prominent signal requiring a more involved processing method. The resulting maps are used to interpret the lithospheric structure beneath the Ligurian sea and Alpine Region with a particular focus on Moho depth and sediment thickness variations and use the velocity variations to determine no evidence for mantle serpentinization.
Although the paper is reasonably well written (particularly the methods section), there are areas where more information and clarity are needed, particularly for the resolution and interpretation sections. Further resolution tests are needed to determine whether the features discussed are resolvable both laterally and in-depth. This is particularly important for the teleseismic dataset and periods >20s. Depth sensitivity and resolution are not discussed. The results and interpretation raise some interesting discussion points on the variations in the lithospheric structure with a focus on sediment thickness changes and Moho depth variations, however both sections are confusing to follow and the interpretation often needs more explanation. The main problem is the use of surface waves as a direct measure for Moho depth. Surface waves should only be a proxy for discontinuities due to their broad depth sensitivity. Combining these indirect measures with more direct measure for Moho depth such as receiver functions would aid the author's interpretation and be a more compelling argument, coupled with a rigorous depth resolution analysis.