Comment on "Ultrasonic Monitoring of Spontaneous Imbibition Experiments: Precursory Moisture Diffusion Effects Ahead of Water Front" by David et al. (2017). Issue 8 (30th August 2018)

• Record Type: Journal Article
• Authors: Kovalyshen, Yevhen
• Is Part Of: Journal of geophysical research. Volume 123:Issue 8(2018)
• Page Start: 6607
• Page End: 6609
• Publication Date: 2018-08-30
• Subjects: Geomagnetism -- Periodicals; Geochemistry -- Periodicals; Geophysics -- Periodicals; Earth sciences -- Periodicals; 551.1
• DOI: 10.1029/2018JB016040
• Languages: English
• ISSNs: 2169-9313

Abstract

Abstract: This brief note presents an alternative explanation to the fact that in the imbibition experiments with active ultrasonic monitoring the amplitude of the recorded P waves detects imbibition front before any changes in the P wave velocities are observable. The model is based on P wave interaction with the imbibition front. The qualitative estimation is in agreement with previously published experimental data. Plain Language Summary: In this note I comment on the recently published paper: David, C., J. Sarout, J. Dautriat, L. Pimienta, M. Michee, M. Desrues, and C. Barnes (2017), Ultrasonic monitoring of spontaneous imbibition experiments: Precursory moisture diffusion effects ahead of water front, J. Geophys. Res. Solid Earth, 122, 4948–4962. In particular, I provide an alternative, simpler explanation to the observed there phenomena that the amplitude of the recorded P waves detects imbibition front before any changes in the P wave velocities are observable. Key Points: P wave reflection from imbibition front can explain amplitude change of recorded P waves