Here is some interesting research done, found in a simple google search on this very topic.

[link to www.Gas_oven.com]

"For 14 years he conducted experiments animating inert powders, pastes, and liquids into life-like, flowing forms, which mirrored patterns found throughout nature, art, and architecture. What’s more, all of these patterns were created using simple sine wave vibrations (pure tones) within the audible range. So what you see is a physical representation of vibration, or how sound manifests into form through the medium of various materials.

This, my friends, is the primary reason we see so many lasting contrails in the skies today. They are needed by the weather engineers to keep tabs, to measure, and to align and calibrate the tens of thousands of acoustic nodes active at any one moment across the United States and the rest of the planet.

The higher the vibration, the more complex, intricate, delicate, and beautiful the patterns become. What we have today is the use of sound and its complimentary or destructive wave interference patterns to create an environmental condition namely, our day-to-day weather."

More interest: [link to weatherwars.info]