Global morphology of infrasound propagation
Atmospheric sound waves in the 0.02–10 Hz region, also known as infrasound, exhibit long‐range global propagation characteristics. Measurable infrasound is produced around the globe on a daily basis by a variety of natural and man‐made sources. As a result of weak classical attenuation (∼0.01 dB km−...
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| Veröffentlicht in: | Journal of Geophysical Research. D. Atmospheres 2003-11, Vol.108 (D21), p.ACL13.1-n/a |
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| container_title | Journal of Geophysical Research. D. Atmospheres |
| container_volume | 108 |
| creator | Drob, Douglas P. Picone, J. M. Garcés, M. |
| description | Atmospheric sound waves in the 0.02–10 Hz region, also known as infrasound, exhibit long‐range global propagation characteristics. Measurable infrasound is produced around the globe on a daily basis by a variety of natural and man‐made sources. As a result of weak classical attenuation (∼0.01 dB km−1 at 0.1 hz), these acoustic signals can propagate thousands of kilometers in tropospheric, stratospheric, and lower thermospheric ducts. To model this propagation accurately, detailed knowledge of the background atmospheric state variables, the global winds and temperature fields from the ground to ∼170 km, is required. For infrasound propagation calculations, we have developed a unique atmospheric specification system (G2S) that is capable of providing this information. Using acoustic ray tracing methods and detailed G2S atmospheric specifications, we investigate the major aspects of the spatiotemporal variability of infrasound propagation characteristics. |
| doi_str_mv | 10.1029/2002JD003307 |
| format | Article |
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| identifier | ISSN: 0148-0227 |
| ispartof | Journal of Geophysical Research. D. Atmospheres, 2003-11, Vol.108 (D21), p.ACL13.1-n/a |
| issn | 0148-0227 2156-2202 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27893521 |
| source | Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Wiley Online Library Free Content; Alma/SFX Local Collection |
| subjects | acoustic propagation atmospheric models Earth, ocean, space Exact sciences and technology infrasound |
| title | Global morphology of infrasound propagation |
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