In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 104, No. 3_Supplement ( 1998-09-01), p. 1788-1788
Abstract:
In shallow water acoustics two very important physical parameters affecting the acoustic wave dissipation are porosity and permeability. These properties are better obtained in situ than in the laboratory. To avoid large-scale acoustic experiment and an inversion that provides only the range averaged properties, the in situ pore pressure measurement by probes on and in the surfacial sediments could be used. The probe penetrates the seabed and measures the seabed pore pressure response to water waves. To use the data to invert for porosity and permeability, the analytical solution of the forward problem based on the Biot theory of poroelasticity is first constructed. Sensitivity analysis is conducted with respect to the porosity and the degree of saturation. Considering the empirical relationships between physical parameters, a minimum set of data required for predicting the pore pressure is presented. The inversion is applied to the field measured data and the results are compared with the independent measurements of these parameters.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1998
detail.hit.zdb_id:
1461063-2
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