Infrasound from small explosions from near to intermediate ranges

Abstract

An experiment was performed near the U.S. Army Engineer Research and Development Center (ERDC) site near Vicksburg MS on May 2014. Explosive charges were detonated and the shock and acoustic waves were detected with pressure gauges, infrasound sensors, and seismometers stationed at various distances from the source, from 3 m to 15 km. One objective of the experiment was to compare the effectiveness of different wind filter strategies. Toward this end, several sensors were deployed near each other, approximately 8 km from the site of the explosion. These sensors used different types of wind filters, including different length of porous hoses, a bag of rocks, a foam pillow, and no filter. Signal-to-noise estimates made from signals recorded with these different sensors will be used to evaluate the effectiveness of the different strategies. A second objective was to compare the infrasound and seismic signals recorded with collocated infrasound sensors and geophones. Results from this experiment will be presented. Permission to publish was granted by Director, Geotechnical & Structures Laboratory.