The Response of the Ocean Bottom to Explosive Sound.
Abstract
Plausible oceanic sediment-basement structures were modelled by stacks of homogeneous, nonabsorbing, horizontal, plane, solid layers. A step function pressure source at the ocean's surface was caused to act, and the responses of the models as observed at the ocean's surface 2 to 20 kilometers from the source were calculated numerically using generalized ray theory and the Cagniard-de Hoop technique. It was found that the ocean bottom's response was quite sensitive to the nature of the transition zone between unlithified sediments and hard rock basement. The responses of models with abrupt transitions were dominated by the basement produced features. Pseudo-Rayleigh waves were found to exist for common ocean bottom models, and effects associated with them controlled the shape of the basement reflection.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 15, 1975
- Accession Number
- ADA006656
Entities
People
- Paul Andrew Spudich
Organizations
- Scripps Institution of Oceanography