An “earthquake” that registered at 2.1 on the Richter scale off the coast of Schiermonnikoog was actually an underwater explosion.
Translation by Traci White
The Groninger Internet Courant reports that the explosion took place about 25 kilometres above Schiermonnikoog in the North Sea.
The explosion, which was a controlled detonation of an explosive by the Ministry of Defence, was detected at 5:28 p.m. on Wednesday.
The Dutch Meteorological Institute KNMI initially reported the quake on Twitter, but soon thereafter clarified that the shaking was caused by the explosive detonation.