Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review
The previous laboratory study of joint electrical resistivity and acoustic velocity measurements is reviewed for both consolidated and unconsolidated permafrost in this paper. The relation of logarithm of resistivity log(R) and P-wave velocity Vp is a concave function. An increase of temperature, fi...
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American Society of Civil Engineers
2019
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ftdtupubl:oai:pure.atira.dk:publications/7c298a6b-bdb3-4b3e-8f00-a1d7f2ffc455 2023-05-15T17:57:58+02:00 Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review Lyu, C. Amiri, S.A. Ghoreishian Gao, H. Ingeman-Nielsen, T. Grimstad, G. 2019 https://orbit.dtu.dk/en/publications/7c298a6b-bdb3-4b3e-8f00-a1d7f2ffc455 eng eng American Society of Civil Engineers info:eu-repo/semantics/closedAccess Lyu , C , Amiri , S A G , Gao , H , Ingeman-Nielsen , T & Grimstad , G 2019 , Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review . in Cold Regions Engineering 2019 . American Society of Civil Engineers , pp. 26-34 , 18th International Conference on Cold Regions Engineering and 8th Canadian Permafrost Conference , Québec City , Quebec , Canada , 19/08/2019 . Unfrozen water saturation Electrical resistivity Sonic velocity Effective medium theory contributionToPeriodical 2019 ftdtupubl 2023-03-29T22:58:35Z The previous laboratory study of joint electrical resistivity and acoustic velocity measurements is reviewed for both consolidated and unconsolidated permafrost in this paper. The relation of logarithm of resistivity log(R) and P-wave velocity Vp is a concave function. An increase of temperature, fine content, and salinity results in a decrease of both acoustic velocity and electrical resistivity. Electrical resistivity is sensitive to salinity, while acoustic velocity changes substantially near thawing temperature. The joint measurement results could be used to estimate unfrozen water saturation (UWS) based on Archie’s law, weighted equation (WE), or Kuster-Toksoz equations (KT). However, the estimated UWS from different methods is not always consistent. The difference can be up to 20%. It might be due to the fact that UWS is not the only parameter influencing the electrical and acoustic properties. In order to obtain consistent UWS, a joint model that combines the electrical effective medium theory (EMT) and the acoustic self-consistent approximation (SCA) is proposed. In this method, UWS and aspect ratio which describes particles shape are found simultaneously from the joint SCA-EMT model. Most of the results from the proposed method are between that of Archie’s law and WE method, which indicates that the electrical method might overestimate UWS and acoustic method might underestimate it. Other Non-Article Part of Journal/Newspaper permafrost Technical University of Denmark: DTU Orbit |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Unfrozen water saturation Electrical resistivity Sonic velocity Effective medium theory |
spellingShingle |
Unfrozen water saturation Electrical resistivity Sonic velocity Effective medium theory Lyu, C. Amiri, S.A. Ghoreishian Gao, H. Ingeman-Nielsen, T. Grimstad, G. Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review |
topic_facet |
Unfrozen water saturation Electrical resistivity Sonic velocity Effective medium theory |
description |
The previous laboratory study of joint electrical resistivity and acoustic velocity measurements is reviewed for both consolidated and unconsolidated permafrost in this paper. The relation of logarithm of resistivity log(R) and P-wave velocity Vp is a concave function. An increase of temperature, fine content, and salinity results in a decrease of both acoustic velocity and electrical resistivity. Electrical resistivity is sensitive to salinity, while acoustic velocity changes substantially near thawing temperature. The joint measurement results could be used to estimate unfrozen water saturation (UWS) based on Archie’s law, weighted equation (WE), or Kuster-Toksoz equations (KT). However, the estimated UWS from different methods is not always consistent. The difference can be up to 20%. It might be due to the fact that UWS is not the only parameter influencing the electrical and acoustic properties. In order to obtain consistent UWS, a joint model that combines the electrical effective medium theory (EMT) and the acoustic self-consistent approximation (SCA) is proposed. In this method, UWS and aspect ratio which describes particles shape are found simultaneously from the joint SCA-EMT model. Most of the results from the proposed method are between that of Archie’s law and WE method, which indicates that the electrical method might overestimate UWS and acoustic method might underestimate it. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Lyu, C. Amiri, S.A. Ghoreishian Gao, H. Ingeman-Nielsen, T. Grimstad, G. |
author_facet |
Lyu, C. Amiri, S.A. Ghoreishian Gao, H. Ingeman-Nielsen, T. Grimstad, G. |
author_sort |
Lyu, C. |
title |
Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review |
title_short |
Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review |
title_full |
Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review |
title_fullStr |
Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review |
title_full_unstemmed |
Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review |
title_sort |
joint acoustic and electrical measurements for unfrozen water saturation estimate - a review |
publisher |
American Society of Civil Engineers |
publishDate |
2019 |
url |
https://orbit.dtu.dk/en/publications/7c298a6b-bdb3-4b3e-8f00-a1d7f2ffc455 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Lyu , C , Amiri , S A G , Gao , H , Ingeman-Nielsen , T & Grimstad , G 2019 , Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate - A Review . in Cold Regions Engineering 2019 . American Society of Civil Engineers , pp. 26-34 , 18th International Conference on Cold Regions Engineering and 8th Canadian Permafrost Conference , Québec City , Quebec , Canada , 19/08/2019 . |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1766166476228657152 |