Background
The International Monitoring System (IMS) currently being established contains an infrasound component consisting of 60 infrasonic arrays distributed globally. As can be observed from the map below, only one of the stations in this network (IS37 in Karasjok, northern Norway) is located in the European Arctic region. This station has as of today not yet been established, but is in the planning phase. Another infrasound station, IS18 on Greenland, is in operation, but is located too far away to give any significant contribution to the regional monitoring of low magnitude events in the European Arctic.
IMS stations in northern Fennoscandia and adjacent regions.
An important area of research at NORSAR is to develop methods for joint seismic/infrasonic analysis of events recorded at regional distances. In particular, we wish to apply and evaluate automatic processing techniques for the area comprising northern Fennoscandia and adjacent regions. It is clear that such an approach will require a far denser network of infrasonic arrays than is projected for the IMS.
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