On Saturday , May 13 , over 60 citizenry get in touch with the Geological Survey of Denmark and Greenland ( GEUS ) to report tremors on the Danish Baltic island of Bornholm .
Residents depict a abstruse grumble , shaking , and change of insistence in their ears when the tremor impinge on , AP Newsreports , while the GEUS recorded tremors with a order of magnitude of 2.3 . At first , the crusade was bear to be an quake , but that has been ruled out by seismologists at the GEUS .
Instead , they believe the tremors were due to ” acoustic pressure waves from an unknown source " . There was another defendant for the unexplained quakes ; military exercise carry out in Poland , over 140 kilometers ( 87 miles ) to the South . However , that , along with earthquakes , was ruled out .
“ The seismologists can report that it is unlikely that the tremors uprise from a controlled explosion in Poland , which was carried out in short before the first written report of tremors on Bornholm , ” GEUS tell in a financial statement seen by AP News .
The tremors did not cause any trauma , though they did reportedly break the walls of a sign of the zodiac . Though the GEUS is baffled as to the source of the insistency waves , there are a few possibilities .
" What commonly happens when we encounter reports of rumbling and shaking is almost always that the tune force has passed through the sound roadblock at sea , and the atmospheric condition have been such that the sound bang roll in over land , " Björn Lund , Associate Professor of Earth Sciences at Uppsala University , secern Swedish newspaperDagens Nyheter .
Lund add that under sure conditions condition , the sonic bunce can seem to come in over the domain .
" What you feel is not actually shaking in the ground , but the pressure undulation in the air , " he clarified .
Similarreportsof earthquakes came in from residents of the NW of England in 2022 , which were later determined to be due to aTyphooncombat aircraft breaking the healthy barrier off the coast . For now , though , the precise movement of the tremors felt at Bornholm rest strange .
