Accession Number:

ADA158000

Title:

Description, Analysis, and Prediction of Sea-Floor Roughness Using Spectral Models

Descriptive Note:

Technical rept.

Corporate Author:

NAVAL OCEANOGRAPHIC OFFICE BAY SAINT LOUIS MS

Personal Author(s):

Report Date:

1985-04-01

Pagination or Media Count:

238.0

Abstract:

A method has been developed which allows a valid statistical model of the variability of oceanic depths to be derived from existing digital bathymetric soundings. The bathymetry of the world ocean has been mapped using a variety of acoustic sounding instruments and traditional contouring methods. The bathymetric contours represent a low-frequency, deterministic model of the seafloor. To describe the higher frequency variability, or roughness, of the seafloor requires the development of an appropriate statistical method for generating a valid stochastic model. The smooth contoured surface often preserved as a geographic grid of depths, when supplemented by such a roughness model, provides a complete description of the relief. The statistical model of the seafloor roughness is also a valuable tool for predicting acoustic scattering and bottom loss, and in addition contains a wealth of geological information for interpreting deep-sea processes.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE