Compressional Wave Speed Dispersion and Attenuation in Carbonate Sediments, Kaneohe Bay, Oahu, HI

2008 ◽  
Vol 33 (4) ◽  
pp. 367-374 ◽  
Author(s):  
Eva-Marie Nosal ◽  
Chunhui Tao ◽  
Stefano Baffi ◽  
Shunsheng S. Fu ◽  
Michael D. Richardson ◽  
...  
Keyword(s):  
Wave Speed ◽  
Compressional Wave ◽  
Carbonate Sediments ◽  
Kaneohe Bay ◽  
Dispersion And Attenuation

scholarly journals A New Compressional Wave Speed Inversion Method Based on Granularity Parameters

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 185849-185856 ◽  
Author(s):  
Jingqiang Wang ◽  
Zhengyu Hou ◽  
Guanbao Li ◽  
Guangming Kan ◽  
Xiangmei Meng ◽  
...  
Keyword(s):  
Wave Speed ◽  
Compressional Wave ◽  
Inversion Method

PRECISION CORRELATIONS BETWEEN THE GEOACOUSTIC PARAMETERS OF AN UNCONSOLIDATED, SANDY MARINE SEDIMENT

2001 ◽  
Vol 09 (01) ◽  
pp. 101-123 ◽  
Author(s):  
MICHAEL J. BUCKINGHAM
Keyword(s):  
Shear Wave ◽  
Marine Sediment ◽  
Wave Speed ◽  
Wave Attenuation ◽  
Compressional Wave ◽  
Sandy Sediment ◽  
Shear Wave Speed ◽  
Causal Connections ◽  
Highly Correlated ◽  
Wave Properties

A recently introduced theoretical model of wave propagation in an unconsolidated, sandy marine sediment is discussed in this article. Essentially, the model consists of four analytical expressions, which specify four wave properties of the sediment, namely the speed and attenuation of the compressional and the shear wave. These expressions contain just three unknown constants, which must be evaluated from data. A technique is described in which these constants are determined from measured values of the compressional wave speed, the shear wave speed, and the shear wave attenuation. This technique is applied to preliminary data from O.N.R.s SAX'99 recent experiment on a sandy sediment in the Gulf of Mexico. From the fully specified equations, the fourth wave property, the attenuation of the compressional wave, is computed and found to lie within 0.5 dB/m of the measured value. Based on this limited evidence, it appears that the wave properties of an unconsolidated sediment are highly correlated and predictable. According to the theory, the causal connections between the wave properties originate in the sliding of one micro/asperity against another on the surfaces of contact between contiguous grains in the medium.

Simultaneous Reconstruction of Compressional Wave Speed and Density Profiles from Modal Eigenvalues

1998 ◽  
Vol 06 (01n02) ◽  
pp. 257-267 ◽  
Author(s):  
Subramaniam D. Rajan
Keyword(s):  
Continuous Function ◽  
Shallow Water ◽  
Density Profile ◽  
Wave Speed ◽  
Synthetic Data ◽  
Compressional Wave ◽  
Simple Approach ◽  
Density Profiles ◽  
Processing Scheme ◽  
Simultaneous Reconstruction

In this paper we present a simple approach for estimating the compressional wave speed and density profiles of sediments in a shallow water environments from modal eigenvalues. Methods published earlier in the literature called for data at two frequencies and had to make the assumption that the density profile is a continuous function. Further, the processing scheme was difficult to implement. The method presented here requires data from only one frequency and allows for discontinuities in the density profile. The performance of the proposed method is studied using synthetic data.

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