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Modern Mysteries

Mystery tremors in Denmark were from an 'unknown source'

By T.K. Randall
May 15, 2023 · Comment icon 6 comments

What is the source of the tremors ? Image Credit: CC BY-SA 3.0 Yamaguchi
Scientists have been left perplexed by a series of unexplained quakes on the Danish Baltic island of Bornholm.
During the weekend, the Geological Survey of Denmark and Greenland (or GEUS) reported that it had received tip-offs from several dozen people regarding "earthquake-like tremors" on the island.

The phenomenon, which occurred mainly on Saturday afternoon, was described as a deep rumbling, shaking or rattling that was strong enough to cause some minor structural damage to buildings.

Fortunately, nobody was hurt, but the source of the quakes still remains something of a mystery.
Earlier today, the GEUS reported that the tremors were "not caused by earthquakes, but by pressure waves from an event in the atmosphere".

The institute was keen to stress, however, that the source and nature of this event was unknown.

"The seismologists can report that it is unlikely that the tremors originate from a controlled explosion in Poland, which was carried out shortly before the first reports of tremors on Bornholm," GEUS said in a statement.

The search for answers continues.

Source: | Comments (6)

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Recent comments on this story
Comment icon #1 Posted by fred_mc 11 months ago
It is good to keep in mind that Bornholm is located at a quite strategic position in the Baltic Sea. There have been observations of Russian spy ships (and intruding planes I think) in the last years near Bornholm. It is not that far from the Nordstream gas pipeline that blew up either. At the end of world war II, the Soviet Union occupied Bornholm and kept it for some time even after the war had ended before giving it back to Denmark. In February last year, the Russian ambassador in Denmark placed a demand on Denmark that they were not allowed to place NATO troups on Bornholm (which they did ... [More]
Comment icon #2 Posted by Buzz_Light_Year 11 months ago
The Norwegian and Polish pipeline passes to the south of the island and intersects the Nordstream. U.S. Military has been flying P8 Poseidon's quite often in the Baltic Sea but mainly offshore from Kaliningrad. As a matter of fact there is one headed there now. This sub hunter will refuel in northern Poland and then spend the best part of the night patrolling the Baltic Sea. It's been the routine for a while.  
Comment icon #3 Posted by dragon1440 11 months ago
Would you listen to Russia about troop placement considering the unjust war on the Ukraine. It only makes sense to put NATO troops there, some where which to my view at least, is quite an easy target for Russia otherwise. Does anyone really think that if they win and take Ukraine territory that Putin is not going to go after other countries. It only makes sense for the rest of the world that has not gone insane to fortify military positions.
Comment icon #4 Posted by Cho Jinn 11 months ago
How many times can we blow up Nordstream?
Comment icon #5 Posted by MysteryMike 11 months ago
Maybe its the Mole People!
Comment icon #6 Posted by Jon the frog 11 months ago
It look like oil/geology seismic survey, some are happening in the Baltic right now. For example:

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