Experimental study of the dispersion of ultrasonic waves in sandy sediments

被引：13

作者：

Moussatov, A

Guillon, L

Ayrault, C

Castagnede, B

机构：

[1] Univ Maine, Lab Accoust, UMR CNRS 6613, F-72085 Le Mans 9, France

[2] IFREMER, Ctr Brest, Lab Acoust Marine, F-29280 Plouzane, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE B-MECANIQUE PHYSIQUE ASTRONOMIE | 1998年 / 326卷 / 07期

关键词：

sandy sediments; ultrasonic dispersion; phase spectrum; Biot theory;

D O I：

10.1016/S1287-4620(98)80013-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The present note discusses the dispersion that occurs in sediments saturated by water at medium ultrasonic frequencies (in the 0.2-1.2 MHz range). A standard algorithm based on the phase spectrum is used to calculate the phase velocity versus frequency. Some measurements have been performed on a granular material (a sand sample provided by IFREMER). It is shown that the wavespeed decreases slightly versus frequency. The implications of such measurements are discussed in relation with theoretical models and some recently published results. (C) Academie des Sciences/Elsevier, Paris.

引用

页码：433 / 439

页数：7

共 17 条

[1]

Allard J.F., 1993, PROPAGATION SOUND PO, P118

[2] PLANE-WAVE ANALYSIS OF ACOUSTIC-SIGNALS IN A SANDY SEDIMENT [J].