Speaker
Description
Explosive volcanic eruptions produce large amount of infrasound (<20 Hz), which can propagate over hundreds to thousands of kilometers in the atmosphere. These eruptions also inject large amounts of ash in the atmosphere, posing a direct threat to commercial flights and the population under the ash plume trajectory.
The Volcanic Information System (VIS) was developed within the Atmospheric dynamics Research InfraStructure in Europe (ARISE) project, in collaboration with the Toulouse Volcanic Ash Advisory Center (VAAC). The VIS is a prototype monitoring system that uses long-range (>250 km) infrasound detections to remotely detect and notify explosive eruptions.
The VIS was designed to use observations from the global International Monitoring System (IMS) infrasound network, but also non-IMS infrasound arrays. To detect an eruption, the VIS relies on the Infrasound Parameter (IP), which accounts for propagation effects, detection persistency and amplitude.
In the current study, we statistically assess the reliability of the VIS to detect, locate and raise automatic notifications for the VAACs, considering global datasets derived from all available IMS stations (2003-present). We also present the current web-based service prototype and the road map to make it available to the public.
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