Effects of On-Site Weather Conditions on the Detection Capability of the Infrasound Station of Madagascar I33MG
Open Access
- 1 January 2022
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Atmospheric and Climate Sciences
- Vol. 12 (02), 297-312
- https://doi.org/10.4236/acs.2022.122019
Abstract
Noise due to surface wind and temperature is a problem in infrasound. Efficiency of IMS network concerns scientists. It is obvious to find the causes of deficiencies of detection of infrasound station by studying background noise power with respect to the surface wind and the temperature. Data measured by MB2000 microbarometer of infrasound station I33MG are used for the study. Infrasound records are separated into 4 frequency bands centered respectively at: 1 Hz, 0.25 Hz, 0.0625 Hz and 0.0156 Hz. Effects of surface wind and temperature are studied by plotting the variations of the background noise power with respect to the temperature or wind speed in the four considered frequency bands and compared with the median of background noise power. The influence of temperature is manifested by a reduction in the number of low-frequency detection. The surface wind reduces the number of detection at a high frequency. An exponential function is proposed to predict the variations of the noise power in different observation frequencies and temperature and wind conditions. The views expressed herein are those of the authors and do not necessarily reflect the views of the CTBTO Preparatory Commission.Keywords
This publication has 9 references indexed in Scilit:
- Efficacy of spatial averaging of infrasonic pressure in varying wind speedsThe Journal of the Acoustical Society of America, 2013
- Statistical Analysis of the Relationship Between Wind Speed, Pressure and TemperatureJournal of Applied Sciences, 2011
- A Review of Wind-Noise Reduction MethodologiesPublished by Springer Science and Business Media LLC ,2009
- The IMS Infrasound Network: Design and Establishment of Infrasound StationsPublished by Springer Science and Business Media LLC ,2009
- Assessing the performance of the International Monitoring System's infrasound network: Geographical coverage and temporal variabilitiesJournal of Geophysical Research: Atmospheres, 2009
- Analyzing the detection capability of infrasound arrays in Central EuropePublished by American Geophysical Union (AGU) ,2008
- Framework for wind noise studiesThe Journal of the Acoustical Society of America, 2006
- Listening to the secret sounds of Earth's atmosphereEos, 2002
- The Structure of Atmospheric Turbulence and its Application to the Design of Pipe ArraysGeophysical Journal of the Royal Astronomical Society, 1971