DOI: 10.1002/2015GL066570
论文题名: Infrasound in the middle stratosphere measured with a free-flying acoustic array
作者: Bowman D.C. ; Lees J.M.
刊名: Geophysical Research Letters
ISSN: 0094-8433
EISSN: 1944-8164
出版年: 2015
卷: 42, 期: 22 起始页码: 10010
结束页码: 10017
语种: 英语
英文关键词: acoustics
; atmospheric dynamics
; high-altitude ballooning
; infrasound
; remote sensing
; stratosphere
Scopus关键词: Acoustics
; Atmospheric acoustics
; Earth atmosphere
; Nuclear explosions
; Remote sensing
; Ventilation
; Water waves
; Acoustic energy fluxes
; Atmospheric dynamics
; Building ventilations
; High-altitude ballooning
; Infrasound
; International monitoring systems
; Nonlinear ocean waves
; Surface station
; Upper atmosphere
; acoustic array
; acoustic wave
; altitude
; atmospheric dynamics
; balloon observation
; earthquake
; energy flux
; infrasonics
; nuclear explosion
; ocean wave
; remote sensing
; sensor
; stratosphere
; turbulence
; upper atmosphere
; ventilation
; Venus
英文摘要: Infrasound recorded in the middle stratosphere suggests that the acoustic wavefield above the Earth's surface differs dramatically from the wavefield near the ground. In contrast to nearby surface stations, the balloon-borne infrasound array detected signals from turbulence, nonlinear ocean wave interactions, building ventilation systems, and other sources that have not been identified yet. Infrasound power spectra also bore little resemblance to spectra recorded on the ground at the same time. Thus, sensors on the Earth's surface likely capture a fraction of the true diversity of acoustic waves in the atmosphere. Future studies building upon this experiment may quantify the acoustic energy flux from the surface to the upper atmosphere, extend the capability of the International Monitoring System to detect nuclear explosions, and lay the observational groundwork for a recently proposed mission to detect earthquakes on Venus using free-flying microphones. Key Points Stratospheric infrasound is very different from infrasound recorded on ground stations Numerous broadband and narrowband signals exist in the stratosphere, some of unknown origin Acoustic networks on free floating balloons have unique advantages and disadvantages. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956936909&doi=10.1002%2f2015GL066570&partnerID=40&md5=936ca6571d4da6891644f0bbe98d9615
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8049
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Geological Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
Recommended Citation:
Bowman D.C.,Lees J.M.. Infrasound in the middle stratosphere measured with a free-flying acoustic array[J]. Geophysical Research Letters,2015-01-01,42(22).