Accession Number:

ADA243532

Title:

Acoustical and Other Physical Properties of Marine Sediments

Descriptive Note:

Final technical rept.,

Corporate Author:

STANFORD UNIV CA ROCKPHYSICS LAB

Personal Author(s):

Report Date:

1991-01-01

Pagination or Media Count:

84.0

Abstract:

This report provides the results of the research effort on the following topics include four parts 1 a The effect of cementation on the elastic properties of granular material, and b Seismic velocities in compacting sediments 2 a The mechanics of hollow grains, and b Pillow basalts compaction due to grain collapse 3 Modeling the granular structure of rocks and 4 Anisotropic Poroelasticity and Biots Parameters. In Part 1 a simple analytical model was developed to describe the mechanics of cemented granular material, for which a solution was obtained to model the normal and shear deformation of a cement layer with straight boundaries. In Part 2, in order to model the mechanical behavior of pillow basalts, we developed a theory for the two-dimensional deformation of hollow grains under external loading. In Part 3 the interaction of rock grains with friction and slippage is modeled using an analytical solution for plain elastic deformation of cylinders. Part 4 examines prediction of wave propagation in a submarine environment. This requires modeling the acoustic response of ocean bottom sediments which generally consists of porous granular materials partially or wholly saturated with water.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Geology, Geochemistry and Mineralogy
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE