Understanding Impacts of Urban Environments on Monitoring Infrasound to Low End Audible Acoustic Signals
Stephen Arrowsmith, Chris Hayward, Mike Pace, Chris Simpson, Brian Stump, Mihan McKenna Taylor
Infrasound arrays are traditionally installed in quiet rural settings, but there is a growing need in the infrasound community, tactical and nuclear monitoring, to understand the implications of moving arrays into or near populated areas. The tactical infrasound monitoring community is interested in monitoring higher frequency and/or low energy sources; this desire often requires a shorter source-receiver spacing. This limitation can move arrays out of more traditional rural spaces. In the nuclear monitoring community, this change is not a choice, but a forgone conclusion with arrays under construction or planed near populated areas such as Beijing, China and Teheran, Iran. These monitoring communities have common needs that require pushing the boundaries of infrasound arrays into or near urban spaces. This paper focuses on exploration of the opportunities and limitations of infrasound monitoring in urban spaces through three studies: (1) evaluation of non-traditional rooftop array designs; (2) comparison of mechanical wind filters for infrasound sensor noise reduction; and (3) quantification of low-frequency acoustic fields, both the total and coherent portions, in urban environments.
Mihan McKenna Taylor
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Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License
McComas, Sarah, "Understanding Impacts of Urban Environments on Monitoring Infrasound to Low End Audible Acoustic Signals" (2021). Earth Sciences Theses and Dissertations. 16.