Local Infrasound Variability Related to In Situ Atmospheric Observation
Abstract
Abstract Local infrasound is widely used to constrain source parameters of near‐surface events (e.g., chemical explosions and volcanic eruptions). While atmospheric conditions are critical to infrasound propagation and source parameter inversion, local atmospheric variability is often ignored by assuming homogeneous atmospheres, and their impact on the source inversion uncertainty has never been accounted for due to the lack of quantitative understanding of infrasound variability. We investigate atmospheric impacts on local infrasound propagation by repeated explosion experiments with a dense acoustic network and in situ atmospheric measurement. We perform full 3‐D waveform simulations with local atmospheric data and numerical weather forecast model to quantify atmosphere‐dependent infrasound variability and address the advantage and restriction of local weather data/numerical weather model for sound propagation simulation. Numerical simulations with stochastic atmosphere models also showed nonnegligible influence of atmospheric heterogeneity on infrasound amplitude, suggesting an important role of local turbulence.
- Authors:
-
- Atmosphere, Earth, and Energy Division Lawrence Livermore, National Laboratory Livermore CA USA
- Mission Support and Test Services LLC Las Vegas NV USA
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1432133
- Alternate Identifier(s):
- OSTI ID: 1432134; OSTI ID: 1466915
- Report Number(s):
- LLNL-JRNL-743710
Journal ID: ISSN 0094-8276
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Journal Article: Published Article
- Journal Name:
- Geophysical Research Letters
- Additional Journal Information:
- Journal Name: Geophysical Research Letters Journal Volume: 45 Journal Issue: 7; Journal ID: ISSN 0094-8276
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; explosion‐induced infrasound; full‐waveform modeling; finite difference method
Citation Formats
Kim, Keehoon, Rodgers, Arthur, and Seastrand, Douglas. Local Infrasound Variability Related to In Situ Atmospheric Observation. United States: N. p., 2018.
Web. doi:10.1002/2018GL077124.
Kim, Keehoon, Rodgers, Arthur, & Seastrand, Douglas. Local Infrasound Variability Related to In Situ Atmospheric Observation. United States. https://doi.org/10.1002/2018GL077124
Kim, Keehoon, Rodgers, Arthur, and Seastrand, Douglas. 2018.
"Local Infrasound Variability Related to In Situ Atmospheric Observation". United States. https://doi.org/10.1002/2018GL077124.
@article{osti_1432133,
title = {Local Infrasound Variability Related to In Situ Atmospheric Observation},
author = {Kim, Keehoon and Rodgers, Arthur and Seastrand, Douglas},
abstractNote = {Abstract Local infrasound is widely used to constrain source parameters of near‐surface events (e.g., chemical explosions and volcanic eruptions). While atmospheric conditions are critical to infrasound propagation and source parameter inversion, local atmospheric variability is often ignored by assuming homogeneous atmospheres, and their impact on the source inversion uncertainty has never been accounted for due to the lack of quantitative understanding of infrasound variability. We investigate atmospheric impacts on local infrasound propagation by repeated explosion experiments with a dense acoustic network and in situ atmospheric measurement. We perform full 3‐D waveform simulations with local atmospheric data and numerical weather forecast model to quantify atmosphere‐dependent infrasound variability and address the advantage and restriction of local weather data/numerical weather model for sound propagation simulation. Numerical simulations with stochastic atmosphere models also showed nonnegligible influence of atmospheric heterogeneity on infrasound amplitude, suggesting an important role of local turbulence.},
doi = {10.1002/2018GL077124},
url = {https://www.osti.gov/biblio/1432133},
journal = {Geophysical Research Letters},
issn = {0094-8276},
number = 7,
volume = 45,
place = {United States},
year = {Fri Apr 06 00:00:00 EDT 2018},
month = {Fri Apr 06 00:00:00 EDT 2018}
}
Web of Science
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