Seafloor Sediment Environmental Measurements in Support of the High Frequency Sound Interaction in Ocean Sediments
Abstract
The project is directed toward the quantification of selected sediment properties crucial to the modeling of high frequency sound interaction in ocean sediments. The effort is two-fold. One part of the research is based on an in situ three-dimensional measurement approach of selected sediment properties (specifically permeability). The second part, the microfabric studies, will provide a better understanding of the sediment pore fluid pathways and porometry leading to the development of microfabric models that describe important sediment properties such as fluid flow characteristics, isotropy and anisotropy, stress-strain behavior, and pore space available for water, gas, and biogenic materials (Bennett et al. 1989a, 1996). Objectives of the project are to (1) develop and test an in situ permeameter to be used in the full scale DRI field experiment and (2) analyze sediment samples for quantitative microfabric modeling studies. This project is in support of the ONR-DRI High Frequency Sound Interaction Modeling effort for prediction and evaluation of sound interaction in marine sediments. One crucial objective is to collect permeability data in a three dimensional configuration with a sand probe. Richard Bennett (SEAPROBE) will work in cooperation with Dr. Paul Johnson (University of Washington) on the probe design. The University of Washington also will collect in situ wet bulk density/porosity data with a probe developed by Dr. Johnson. These measurements will provide a strong statistical database of in situ sediment properties that are crucial input parameters for high frequency modeling.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1998
- Accession Number
- ADA542140
Entities
People
- Richard H. Bennett