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A 6.8 Ms earthquake struck the Spitak region of Armenia, killing at least 25,000 people (aftermath pictured).
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Surface-wave magnitude
Earthquake measurement scale
The surface wave magnitude scale is one of the magnitude scales used in seismology to describe the size of an earthquake. It is based on measurements of Rayleigh surface waves that travel along the uppermost layers of the Earth. This magnitude scale is related to the local…Source: Wikipedia (CC BY-SA)
1988 Armenian earthquake
Devastating earthquake in Armenian SSR, USSR
The 1988 Armenian earthquake, also known as the Spitak earthquake, occurred on December 7 at 11:41 local time with a surface-wave magnitude of 6.8 and a maximum MSK intensity of X (Devastating). The shock occurred in the northern region of Armenia which is vulnerable to large…Source: Wikipedia (CC BY-SA)
Spitak
Place in Lori, Armenia
Spitak, is a town and urban municipal community in the northern Lori Province of Armenia. It is 96 km (60 mi) north of the capital, Yerevan, and 22 km (14 mi) west of the provincial center, Vanadzor. Spitak was entirely destroyed during the devastating 1988 Armenian earthquake,…Source: Wikipedia (CC BY-SA)