The seismicity of the Pannonian Basin can be described as moderate. The study area
is located in the northern part of the Pannonian Basin, which is one of the most active
area in terms of earthquakes.We found that earthquake swarms occur in the Mór graben
quite regularly. The Kövesligethy Radó Seismological Observatory deployed three temporary
stations in the graben to monitor the local seismicity, and these stations operated
for ca. 20 months. We can study the very small magnitude events because the detection
capability is more sensitive from 2020.After relocating the events with a multiple-event
location algorithm, we compare three different real swarm detection methods based
on the filtered three-component waveforms, to find the best one to collect a complete
swarm event list in the Mór Graben.Using the temporary and permanent stations of the
Kövesligethy Radó Seismological Observatory and the GeoRisk Ltd. networks we can identify
more than a hundred swarms with small magnitudes.Our results show that the Mór Graben
is still active, where some of the largest earthquakes occurred in Hungary in the
past.
