Detection of Background Water Leaks Using a High-Resolution Dyadic Transform

Round 1

Reviewer 1 Report

The evaluation of the results is based on figures; however, this is very difficult to reproduce.

Nothing is said about the "pratical" computation of cross-spectral density function and coherence function;

Author Response

Journal Water

Dear Editor and reviewer 1:

The authors of the manuscript titled: “Detection of Background Water Leaks using a High-Resolution Dyadic Transform” thank the reviewers for the comments made that helped to improve the clarity of the work presented. Below are the responses to the comments made.

Reviewer 1:

The evaluation of the results is based on figures; however, this is very difficult to reproduce.

Answer:

We understand the difficulty you may find in reproducing the results obtained with the  cross-spectral density and the  coherence is very difficult. This is because the programming code for these mathematical tools is not yet published. For this reason, the authors of the manuscript are working so that Matlab implements the  cross-spectral density and the  coherence in their environment.

Nothing is said about the "practical" computation of cross-spectral density function and coherence function;

Answer:

The authors calculated the absolute error when calculating  cross-spectral density and the  coherence, the absolute error obtained was 1. This result was added in section 5.1 Figures 5 and 7.

Dr. Diego Seuret-Jiménez

Full-time Research

Centro de Investigación en Ingeniería y Ciencias Aplicadas

Universidad Autónoma del Estado de Morelos

dseuret@uaem.mx

Author Response File: Author Response.pdf

Reviewer 2 Report

Overall, I liked the paper because it is sound from both the experimental and numerical point of view. Here are my comments.

Major comments:

- The introduction is weirdly organized. It starts by describing the contribution of the work, then it moves towards the literature review and finally it goes back to the contribution of the work. Please, make it more tidy.

- In the experimental design, I was expecting pressure measurements to be carried out. Why are accelerometers used? In some figures of the paper, I also saw acceleration on the y axis. What does this represent from the hydraulic viewpoint?

- in the results and discussion, I wasn't able to unbderstand what the first test in the simulation enviuronment about? Is it a purely numerical test? More details must be given.

- All the figures are poorly described in the text. There are some that are not even cited, such Figure 12, 15, 16, 19, 21. This must also be absolutely improved to facilitate the reader in understanding

- In the conclusions some comments are worth making, at least as a prospect, as far as the two following aspects are concerned:

a) what could the practical use of this methodology in the field?

b) what could the implications be in the modern modelling of water distribution networks, e.g. "High-Order Global Algorithm for the Pressure-Driven Modeling of  Water Distribution Networks" and "EPANET 2.2 user manual"

This would enhance the impact of the paper

Other comments

- first line of the abstract: "down to" instead of "up to"

- line 34 - "Due to... domain" disconnected sentence

- line 43: "small or minor" instead of "minimum"

- Lines 99-100: disconnected sentence.

- Lines 107-112: remove "," after section 2, section 3 and section 4

- Line 177 "they allow investigating"

- Line 185 "...that allows extraction of..."

- Line 213 "were used"

- line 300 "Figure 8 and Figure 9"

- Line 313 "...allows detection of..."

- Line 374 "allow investigating..."

 

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

The evaluation based in figures is still probelmatic because some figures gibe nearly no information.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 2 Report

No other comments 

Author Response

Please see the attachment.

Author Response File: Author Response.pdf