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Tracking near-surface atmospheric conditions using an infrasound network
1Department of Earth and Environmental Science, New Mexico Tech, 801 Leroy Place, Socorro, New Mexico 87801, USA. omarcill@ees.nmt.edu
The Journal of the Acoustical Society of America
|July 24, 2010
Summary
Volcanic infrasound signals reveal local wind patterns at Kilauea. This method tracks average meteorological conditions, aiding in plume dispersal and gas flux studies.
Area of Science:
- Geophysics
- Atmospheric Science
- Volcanology
Background:
- Volcanic infrasound is a valuable tool for studying volcanic processes.
- Understanding local wind patterns is crucial for atmospheric and volcanic research.
Purpose of the Study:
- To investigate the use of continuous volcanic infrasound for determining near-surface horizontal winds.
- To analyze the impact of variable atmospheric conditions on infrasound signals.
Main Methods:
- Recording continuous infrasound signals using a three-microphone network at Kilauea.
- Inverting infrasound data to estimate near-surface horizontal wind speeds and directions.
- Utilizing signal cross-correlation to determine inter-station phase delays.
Main Results:
- Observed inter-station phase delays up to 4%, attributed to atmospheric variability.
- Identified two dominant weather regimes: 6-9 m/s easterly trade winds and 2-5 m/s mountain breezes.
- Demonstrated the potential of infrasound for tracking local averaged meteorological conditions.
Conclusions:
- Volcanic infrasound can effectively monitor local atmospheric conditions.
- This technique has significant implications for plume dispersal modeling.
- Infrasound data can contribute to more accurate gas flux quantification.
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