Monday, June 9, 2008

Physics of Hurricane

FormationNo one yet really understands how and why hurricanes form. Logically, any circulating flow of air should experience frictional energy losses in moving past stationary exterior air. This is why the vast majority of "dust devils" and other small scale vortices dissipate in a matter of seconds. Larger scale vortices, such as the common weather cyclones and anti-cyclones, persist longer, but still eventually succumb soon to these frictional losses.
Obviously, there is something unique in the formation of a hurricane, which overcomes this natural effect of energy dissipation. Whatever those unique characteristics are, they certainly rely on an effective application of a (natural) forced vibration and its resonant effects. A hurricane does not form instantly. It gradually grows in size and strength and intensity. This is an example of the physics concept of amplification (magnification) at a resonant frequency, like in the public address amplifier 'feedback loop' example mentioned above.
Since hurricanes must then necessarily FORM due to an extended exposure to resonant effects that magnify their power and intensity, this approach is meant to use the same concept against them! At very early stages in their development, an assortment of approaches might be effective, from introducing out-of-phase rotational energy AT the natural frequency (in an application of the Quadrupole approach) to introducing entirely different resonant frequencies, either near the resonant frequency or at harmonic multiples of it (with the intention of driving the storm formation into several other, smaller circulations, so that the large later hurricane could not form).
The bulk of this presentation is based on the assumption that an organized circulation has already formed and must be dealt with. Once the resonance effect has begun to substantially magnify, attempting to modify the natural frequency is very difficult, and so the basic approaches described here focus on the fact that the natural frequency is already well established. With this fact given, the methods described above seems most likely to best reduce or dissipate the storm. As has been noted though, a number of variations could be tried, to see which approach most effectively de-stabilized the hurricane. It might even be that different approaches are most effect at deterring the initial formation of the storms and at de-stabilizing well-established ones.
As should be obvious in all this, since a hurricane initially takes many hours of stable resonant conditions in first forming, it would also certainly take quite a few hours of introducing detrimental harmonic resonant energy in order to degrade it.

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