Ultra long range acousticmonitoring of submarine eruptions at West Mata volcano
Many submarine volcanoes are difficult to observe.However,acoustic signals produced by these volcano eruptions provide an effective means of long-term and quasi-real-time monitoring of submarine volcanism.This paper analyzed 14 months of recordings at two hydrophone arrays moored near the Sound Fixing and Ranging Channel axis for underwater sound waves from West Mata volcano.A detection method,based on weighted slowness and cluster analysis,was proposed to identify the hydroacoustic signals of volcanism.The impact of 2D and 3D acoustics were demonstrated by the application of the Parabolic Equation model and the Adiabatic Mode Parabolic Equation model.More than 9000km is from the volcano to the receiver.The frequency and intensity of eruptions showed that at least 37 discrete episodes occurred between January 2009 and February 2010,and the difference of intensity is over 10 dB.
West Mata volcanoSubmarine volcano eruptionUltra long range acoustic monitoring
NETL
NSTL
万方数据
维普
