Accepted Manuscript A comparative study for the source depth estimation of very low electromagnetic (VLF-EM) signal A. Ebrahimi, N. Sundararajan PII: S0926-9851(18)30517-2 DOI: https://doi.org/10.1016/j.jappgeo.2019.01.007 Reference: APPGEO 3701 To appear in: Journal of Applied Geophysics Received date: 7 June 2018 Revised date: 6 December 2018 Accepted date: 10 January 2019 Please cite this article as: A. Ebrahimi, N. Sundararajan , A comparative study for the source depth estimation of very low electromagnetic (VLF-EM) signal. Appgeo (2018), https://doi.org/10.1016/j.jappgeo.2019.01.007 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.