Abstrakt
Famous but yet unexplained phenomena happened on 30. June 1908 in Siberia, Russia.
A large forested area was affected by this explosion. But no impact crater or meteorite residual was found yet.
People who lived near affected area described long-lasting thunder and long-lasting bright glow from the direction of the epicenter of the event. Many scientific expeditions were done to the epicenter during the last decades.
Location if the Tunguska event is remote. Deep in Siberia, where are dense forests, large swamps, extreme temperatures, and wild animals.
This environment along with its remoteness makes any geophysical measurements and fieldwork extremely though. Since no significant impact structure was found yet we decided to do geophysical measurements and map the epicenter of the Event.
Due to rough terrain and large swamps the conventional method of magnetometer survey is nearly impossible at this site. We decided to carry out airborne magnetometer survey of the Tunguska Event epicenter.
Using UAVs (drones) we were able to collect a significant amount of data. Total magnetic intensity is later computed from the data and corrected with altitude data and with temperature data eventually.
We plotted the data (more than 5 millions of datapoints) to map of magnetic anomalies. Most of the anomalies which we recorded over the epicenter correspond with the known geological situation of the area.