Accession Number:

ADA277830

Title:

A Geoacoustic Model for Fine-Grained, Unconsolidated Calcareous Sediments (ARSRP Natural Laboratory)

Descriptive Note:

Final rept.

Corporate Author:

NAVAL RESEARCH LAB STENNIS SPACE CENTER MS

Personal Author(s):

Report Date:

1994-03-09

Pagination or Media Count:

58.0

Abstract:

This report presents a geoacoustic model that is broadly applicable to deep ocean areas that are covered with soft, finegrained, predominantly calcareous sediment. The model is based on a compilation and assessment of sediment geoacoustic properties deemed important as input parameters to acoustic field models. Physical properties measurements compressional wave velocity, shear wave velocity, density, porosity extracted from Deep Sea Drilling Project and Ocean Drilling Program Initial Reports provide the bulk of the accumulated data. Attenuation data and additional shear wave data were obtained from other sources. The data are presented as 1 statistical summaries 2 cross-plots illustrating the relationships between properties and 3 regression equations. Empirically derived relationships commonly used to prepare geoacoustic models are not employed by this model. A discussion is presented in order to document the reasoning and, ultimately, the choices made in constructing the model. Geoacoustics, Geologic models, Seafloor, Sediments.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE