File:Upsweep Espectrograma.jpg
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Summary
| Description |
English: This sound was present when PMEL began recording SOSUS in August, 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds duration each. The source level is high enough to be recorded throughout the Pacific. It appears to be seasonal, generally reaching peaks in spring and fall, but it is unclear whether this is due to changes in the source or seasonal changes in the propagation environment. The source can be roughly located at 54o S, 140oW, near the location of inferred volcanic seismicity, but the origin of the sound is unresolved. The overall source level has been declining since 1991 but the sounds can still be detected on NOAA's equatorial autonomous hydrophone arrays. Español: Espectrograma |
| Source | http://www.pmel.noaa.gov/acoustics/sounds/upsweep.html |
| Author | NOAA |
Licensing
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This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.
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Original upload log
The original description page was here. All following user names refer to en.wikipedia.
- 2011-08-20 12:14 Surajt88 545×450× (51226 bytes) {{Information |Description =This sound was present when PMEL began recording SOSUS in August, 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds duration each. The source level is high enough to be recorded throughout
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:19, 21 August 2014 | | 545 × 450 (50 KB) | Genus103 | User created page with UploadWizard |
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