ATMOSPHERIC INFRASONIC MONITORING AND ANALYZING OF THE INFRASONIC EVENTS BEFORE THE 2015 NEPAL EARTHQUAKE

One infrasonic monitoring network in east-central China is built to study the infrasonic phenomenon caused by spontaneous or artificial events in the atmosphere.Two events of anomalous infrasound waves were recorded at five infrasonic monitoring stations before the Nepal earthquake which happened on 24 April 2015. Sources of the infrasonic events are located by using the methods of minimum variance based on the infrasonic time delays. A novel method is shown for calculating the velocity projected surface and the evidence of spatial correlation between the source and earthquake is produced in this paper.