I thank the authors for their careful consideration of the reviews. The two most critical reviewers have re-read the manuscript and both have recommended acceptance as is. I am looking forward to seeing this paper in print but have a few minor technical corrections:

Page 5 line 25: Citation needed for accuracy of tandem--X. You can use
Rizzoli, P., Martone, M., Gonzalez, C., Wecklich, C., Borla Tridon, D., Bräutigam, B., Bachmann, M., Schulze, D., Fritz, T., Huber, M., Wessel, B., Krieger, G., Zink, M. and Moreira, A.: Generation and performance assessment of the global TanDEM-X digital elevation model, ISPRS Journal of Photogrammetry and Remote Sensing, 132, 119–139, doi:10.1016/j.isprsjprs.2017.08.008, 2017.
Note that 2 m accuracy is the design specification but the above paper finds higher accuracy.
Page 7, line 3: Can you explain what the delta_R value means?
Page 9 line 20: You say "most of the time" but actually you are trying to convey spatial information (I think) so I would say "A most sites the shoreline sediments are buried" or similar.
Page 10, line 5: TanDEM--X is also much more vertically accurate. You can cite the rizzoli paper again here.
Bottom page 12, and elsewhere: Make sure yr^-1 has the correct superscript.
Page 16 line 20: yr^-1: make this superscript.
P 17 line 1: lowercase "radiocarbon".

Table 2 could use a more descriptive caption.
Figures: In my pdf there is some mixing of figure panels and captions (e.g., 3 captions appear in a row and out of sequence (3,2, then 4). Just double check when uploading figures that everything is in the correct order.
Figure 8: Units needed on the ages.

Dear Authors,
I am happy to convey that your paper has been accepted for publication after addressing the technical issues listed by the Associate Editor.
Thank you very much for considering ESurf.

Andreas Lang