Wind Noise Reduction System models state of the art assessment and study of their respective optimal field of application

Within the International Monitoring System Infrasound Stations, Wind Noise reduction Systems (WNRS) help to improve the infrasound signal quality and analysis by eliminating local atmospheric noise. A standardized system has been designed for the monitoring of nuclear explosions, with a frequency range of interest of 0.1Hz to 10Hz.

This standardized system, a pipe-array rosette, has many options for adaptation with different pipe length, material, and geometry. The type of air inlet and the use or not of primary manifolds will change WNRS characteristics.  All these options of adaptation, give the possibilities to turn the WNRS into tailor-made flexible systems which can be further customized according to their use.

Other types of WNRS have been developed and tested. Enviroearth offers to compare and assess their particular performances : considering their different characteristics, those distinct WNRS model could be practical and optimal for specific applications. By modifying the geometry and characteristics of a WNRS, frequency at which maximum noise reduction is reached can be changed. Therefore, adapted WNRS can be used in measurement stations to monitor natural events (Seismic, Storm, hurricane …) which data can be used for early warning and/or climate change adaptation systems.