This is a highly valuable contribution to better delineate the grounding line using SAR imagery. Both reviewers judged this manuscript very positively, and as the editor I echo their view. The authors’ responses are satisfactory. I have only a few technical/editorial suggestions; this manuscript is accepted subject to technical corrections. Congratulations!
Thanks for sending exciting results in a well-polished form.

Kenny Matsuoka
TC/TCD Editor

Editorial/technical suggestions:
P1L10: the revised manuscript compares displacement and velocity. Though this change is made to reflect reviewer’s comment, I would suggest changing it back. Namely, “Our GPS data show a horizontal modulation of up to 60% of the vertical displacement amplitude…”
P2L16: remove “continuous”. We don’t really know how ice motion is continuous there, and this point is out of the scope of this paper anyway.
P2L33: short, instead of small.
P4L1: Please be specific. Replace “A small ice rise” with “Edgar Ice Rise”
P4L6: “generally”
Table 1: please specify how the flow direction is measured in the table or in the caption (degrees from north, I guess).
Table 3: show date using the format used in Table 2, e.g. “30 Oct – 10 Nov to 12 Nov – 2 Dec”