Dear authors,

thank you for resubmitting your manuscript. I have now heard back from two referees. As you can see, both of them like the manuscript and feel that it is an important scientific contribution. Also, I agree with the referees that the manuscript is well written and easy to follow. On the other hand, Referee 2 questions the applicability of the geometric mean of the horizontal seismogram components to calculate the H/V ratios. He argues that this may introduce a bias for a non-isotropic noise field and suggests the vector norm instead.

In a subsequent submission I ask you to respond to the point raised by Referee 1 and if necessary change your calculation and/or conclusions. As the use of the correct formula is at the heart of your analysis, I choose "major revisions" at this point, although this revision may be taken care off quickly if the new formula for the H/V ratios does not change results significantly.

Best,
Fabian Walter.

Dear Andreas and Christian,

Thank you for working with Associate Editor Fabian Walter and his referees to optimize your manuscript. I am happy to follow Fabian's advice and am accept the manuscript for publication in its present form. Please will you work efficiently with the Copernicus copy editors now to ensure prompt publication of your study. Thank you for submitting your work to ESurf. It is a valuable part of what is shaping up to be an interesting special issue on environmental seismology.
Niels Hovius