Acoustical origin of rainbands in an ideal tropical hurricane

An acoustical model of hurricane rainband formation is proposed. Self-excited acoustic resonance inside the spinning eye produces strong azimuthal and radial standing waves. These modes can cause large temperature fluctuations about the dew point which are believed to be responsible for observed dry...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2006-05, Vol.119 (5), p.2645-2650
Main Author: Elder, S. A.
Format: Article
Language:English
Subjects:
Acoustics
Aeroacoustics, atmospheric sound
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An acoustical model of hurricane rainband formation is proposed. Self-excited acoustic resonance inside the spinning eye produces strong azimuthal and radial standing waves. These modes can cause large temperature fluctuations about the dew point which are believed to be responsible for observed dry/wet bands in the outer storm disk. Distortion of standing wavefronts into spirals occurs in the transition layer region between approximately geostrophic flow inside the eyewall and irrotational flow outside. Tonal emissions from hurricane eyes should be detectable at great distances and are likely to be in a range below 0.01 Hz .
ISSN:0001-4966
1520-8524
DOI:10.1121/1.2181087