Analytical Techniques for Determining Subbottom Velocity Profiles in Unconsolidated Sediments.
Abstract
This report describes and discusses some of the most common and widely used methods for analyzing travel time data to obtain the layer and velocity structures in marine subbottom sediments. Two methods for analyzing travel time data of arrivals reflected from subbottom layers to determine interval velocities and layer thicknesses are discussed and shown to give acceptable results when applied to a range of differing water-sediment thickness ratios. A method for analyzing interval velocities to yield sound speed as a function of depth is presented and shown to be capable of accurately determining subbottom velocity profiles under restrictive conditions. Two methods which may be used in a single sediment layer configuration are also presented; both of these methods are based on the effects of sound energy which has refracted in the subbottom and are capable of determining the initial sound velocity and gradient in the single layer. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 21, 1976
- Accession Number
- ADA035697
Entities
People
- Steven R. Rutherford
Organizations
- University of Texas at Austin