Abstract: Most published information on age-dependent changes in the physical properties of upper oceanic crust (layer 2A) was based on the interpretation of analog airgun-sonobuoy records. New technology, developed at Lamont during an earlier ONR-funded project, allows digitization (via scanning) and computer- based analysis, via interactive ray tracing. The digitization process was applied to 142 analog records from sonobuoys located on Pacific ocean crust with well determined ages between zero and 10 my. Initial analysis was begun, and the records were evaluated and sorted into three categories depending on whether the necessary arrivals for 2A velocity determination were present. 50 = 'yes', 55 = 'maybe', 37 = 'no'. At this point, funding was withdrawn due to the termination of the crustal evolution project and reassignment of its program manager.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. |
| Pages: |
9 |
| Report Date: |
SEP 96 |
| Contract Number: |
N00014-93-1-0346 |
| Report Number: |
A396423 |
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