Acoustic compressional wave velocity as a predictor of glacio-marine sediment grain size

Moran, K., Altmann, V., O'Regan, Matthew and Ashmankas, C. 2007. Acoustic compressional wave velocity as a predictor of glacio-marine sediment grain size. Geotechnical Testing Journal 30 (4) , pp. 267-273. 10.1520/GTJ100228

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Abstract

We present relationships between the nondestructive measurement of acoustic compressional wave velocity and grain size and show that velocity can be used to assess some physical properties of glacio-marine sediments. For coarse-grained sediments, an increase in velocity is associated with an increase in the percentage of this size range. Within the fine-grained sediment size range, velocity is not an accurate predictor of grain-size. A median grain size of 4 μm and a sand content of 15 % are the limiting factors that distinguish this fine-grained behavior from coarse-grained behavior. However, in fine-grained glacio-marine sediment, the percent of sand (grain size >63 μm), can be predicted by compressional wave velocity. Therefore, with further refinement, acoustic velocity shows some potential as a predictor of grain size for marine sediments.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	Q Science > QE Geology
Uncontrolled Keywords:	Grain size ; Marine sediment ; Acoustic compressional wave velocity ; Nondestructive testing ; Porosity ; Bulk density.
ISSN:	0149-6115
Last Modified:	19 Mar 2016 22:12
URI:	https://orca.cardiff.ac.uk/id/eprint/7527

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