The Osmussaar earthquake occurred on 25 October 1976 near the north tip of
Osmussaar
Osmussaar ( sv, Odensholm, german: Odinsholm) is an Estonian island situated in the mouth of the Gulf of Finland in the Baltic Sea, 7.5 km off the Estonian mainland. Administratively the island is part of Lääne-Nigula Parish in Lääne ...
, an island close to the coast of Estonia. Its
hypocenter
In seismology, a hypocenter or hypocentre () is the point of origin of an earthquake or a subsurface nuclear explosion. A synonym is the focus of an earthquake.
Earthquakes
An earthquake's hypocenter is the position where the strain energy s ...
was below ground level, and it was measured at 4.5–4.7 .
The earthquake was largely felt in surrounding areas like north Estonia, south Finland and Sweden. Aftershocks also took place in November.
Damage
The earthquake was the most powerful recorded in Estonia; it caused rockfalls along the north and northeastern coasts,[ and some houses suffered some structural damage.]
See also
*List of earthquakes in 1976
This is a list of earthquakes in 1976. Only earthquakes of magnitude 6 or above are included, unless they result in damage and/or casualties, or are notable for some other reason. All dates are listed according to UTC time. Maximum intensities ...
* Geology of Estonia
References
{{Reflist
1976 earthquakes
Earthquakes in Europe
Natural disasters in Estonia
1976 in Estonia
Lääne-Nigula Parish
Earthquakes in the Soviet Union
October 1976 events in Europe