Infrasound measurement system for real-time in situ tornado measurements
نویسندگان
چکیده
Abstract. Previous work suggests that acoustic waves at frequencies below human hearing (infrasound) are produced during tornadogenesis and continue through the life of a tornado, which have potential to locate profile tornadic events provide range improvements relative current radar capabilities, primary measurement tool. Confirming identifying fluid mechanism responsible for infrasonic production has been impeded by limited availability quality (propagation-related uncertainty) infrasound data. This paper describes an effort increase number measurements reduce uncertainty in subsequent analysis equipping storm chasers first responders regular proximity tornadoes with mobile capabilities. The study focus is design, calibration, deployment, data collected Ground-based Local INfrasound Data Acquisition (GLINDA) system collects relays from microphone, GPS receiver, inertial unit (IMU). GLINDA deployed beginning May 2020 provided continuing real-time automated monitoring spectrum peak detection. In sampled severe weather phenomena, signal measured EFU (EF-Unknown, where EF represents Enhanced Fujita scale) tornado (Lakin, KS, USA) shows elevated broadband between 10 15 Hz. A significant hail event no despite rotation storm. consistency these observations existing fixed-array tools demonstrates value acquiring on-location systems introduces capability processing display measurements.
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ژورنال
عنوان ژورنال: Atmospheric Measurement Techniques
سال: 2022
ISSN: ['1867-1381', '1867-8548']
DOI: https://doi.org/10.5194/amt-15-2923-2022