| Autor: |
Claes G. H. Rooth, John C. Van Leer |
| Rok vydání: |
1975 |
| Předmět: |
|
| Zdroj: |
Deep Sea Research and Oceanographic Abstracts. 22:831-836 |
| ISSN: |
0011-7471 |
| DOI: |
10.1016/0011-7471(75)90086-8 |
| Popis: |
Photogrammetric evaluation of the rate of distortion of vertical dye streaks within the main oceanic thermocline indicates that spiraling perturbation structures overlay the large-scale vertical shear. The data show pronounced shear structure with vertical scales of a meter or less at depths of hundreds of meters. The shapes as well as strengths of the observed shear structure have a strong dependence on depth. At 400 m the major variations in shear had vertical length scales of about 10 to 20 m; the velocity amplites were of the order of 1 cm s−1, and the predominant spiral pitch was consistent with downward propagation of energy by internal gravity waves. Shallower observations suggest a lateral intrusion as a predominant shear source. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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