Tremors on Bornholm were jets
A Swedish researcher believes to know why several Bornholmers suddenly felt tremors last Saturday. Björn Lund, who researches seismological conditions at the University of Uppsala, tells DR he believes that the tremors were caused by one or more jet fighters breaking the sound barrier. About 10 Swedes reported similar events in the time after the tremors, it says. ” People have heard low-frequency noises and experienced shaking, so the windows also shook. They lasted about 10-13 seconds,” Lund told DR. /ritzau/