Thermal Fracturing, Underwater Ambient Noise Measurements, and Modeling
Abstract
The long term goals is to understand thermally-generated ice stresses, cracking, and the resulting underice ambient noise and develop a physically-based model for these processes. Near the SHEBA field operation, collect under-ice noise data at those frequencies associated with the thermal fracturing of pack ice. We wish to ascertain those relationships between the thermal forcing of floes, the generation of stresses in the floes as a result of the thermal forcing, the eventual fracturing of ice in tension in the floes, and the generation and propagation of acoustical energy from the fractures into the water column. The SHEBA field data and associated under-ice noise is being utilized in determining the relationships in these processes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1998
- Accession Number
- ADA534944
Entities
People
- James K. Lewis
- Peter J. Stein