Details:

Journal Title:
Remote Sensing
Personal Author:
Wilson, Trevor C. ; Petrin, Christopher E. ; Elbing, Brian R.
Wilson, Trevor C. ; Petrin, Christopher E. ; Elbing, Brian R. Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research)
Description:
A three-microphone acoustic array (OSU1), with microphones that have a flat response from 0.1 to 200 Hz, was deployed for 6 years (2016–2022) at Oklahoma State University (OSU) in Stillwater, Oklahoma, and sampled at 1000 Hz. This study presents a new dataset of acoustic measurements in a high interest region (e.g., study of tornado infrasound), provides a broad overview of acoustic detections and the means to identify them, and provides access to these recordings to the broader scientific community. A wide variety of infrasound and low-audible sources were identified and characterized via analysis of time traces, power spectral densities, spectrograms, and beamforming. Low, median, and high noise models were compared with global noise models. Detected sources investigated include natural (microbaroms, bolides, earthquakes, and tornadoes) and anthropomorphic (fireworks, airplanes, and munition detonations) phenomena. Microbarom detections showed consistency with literature (~0.2 Hz with peak amplitude in the winter) and evidence that the frequency was inversely related to the amplitude. Fireworks and airplanes served as verified local events for the evaluation of data quality and processing procedures. Infrasound from munition detonations, that occur nearly daily at a location 180 km southeast of OSU1, matched the available ground truth on days with favorable propagation to OSU1. A clear bolide detection with an estimated position of approximately 300 km from OSU1 was shown. Most detected earthquakes were seismic arrivals due to sensor vibrations; however, the largest earthquake in Oklahoma history showed an acoustic arrival. Finally, data from multiple tornadoes are discussed, including a previously unpublished quasi-linear convective system tornado.
Keywords:
[+]
General Earth and Planetary Sciences
Source:
Remote Sensing, 15(5), 1455
DOI:
https://doi.org/10.3390/rs15051455
ISSN:
2072-4292
Format:
PDF
Publisher:
MDPI AG
Document Type:
Journal Article
Funding:
Grant no. NA18OAR4590307 ; Grant no. NA19OAR4590340
Grant no. NA18OAR4590307 ; Grant no. NA19OAR4590340 Less -
License:
https://creativecommons.org/licenses/by/4.0/
Rights Information:
CC BY
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:fd85d1c834fe6d4f32ed3fd05fc4fd059f20eb074734662fac1231938b4ad9d8
Download URL:
https://repository.library.noaa.gov/view/noaa/58769/noaa_58769_DS1.pdf
File Type:

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