At 04.17 am local time (02.17 CET) on Monday 6 February 2023, the first of two extremely large earthquakes struck south eastern Turkey, near the Syrian border. This first earthquake, which has been recorded as a 7.8Mw event, was followed at 15.24 local time (11.24 CET) by a second earthquake recorded as being a 7.5Mw event. news.sky.com

An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth’s lithosphere that creates seismic waves. Earthquakes can range in intensity, from those that are so weak that they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume… Wikipedia.org