Mag 7.8, 7.5, 6.7 and 6.0 earthquakes and aftershocks in Turkey

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On February 6, 2023, Turkey experienced a series of devastating earthquakes, including a major 7.8 magnitude quake, resulting in significant destruction and a rising death toll that has surpassed 34,179 across Turkey and Syria. The earthquakes, which struck near the East Anatolian Fault, were felt in neighboring countries and caused widespread building collapses, trapping many individuals under rubble. Rescue efforts have been hampered by cold weather and ongoing aftershocks, leading to fears that many trapped survivors may not survive. The infrastructure in affected areas is severely damaged, with shortages of food and water reported. The earthquakes have prompted investigations into construction practices, as many buildings were not designed to withstand such strong tremors. The region is known for its seismic activity due to the complex interactions of the Africa, Arabia, and Eurasia tectonic plates, making future seismic events a concern.
  • #31
dlgoff said:
This image ... blows my mind:
The wall shown is blocky, not slick or scarred, so it looks like it failed in tension, not as the surface expression of a vertical shear fault.

What appears to have happened is a solid landslip. A large block of sedimentary rock on a hillside with a similar slope to the bedding, slid down-slope on an incompetent mudstone layer, leaving that precipice as the headwall.

The rock slide event was triggered by the earthquake. The foot of the rock slide is not shown. If the block was wedge shape, then the foot of the slide may be insignificant.
 
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  • #32

M 6.3 - 3 km SSW of Uzunbağ, Turkey​

https://earthquake.usgs.gov/earthquakes/eventpage/us6000jqcn/executive
  • 2023-02-20 17:04:29 (UTC)
  • 36.109°N 36.017°E
  • 16.0 km depth
(CNN) – A magnitude 6.3 aftershock struck southern Turkey on Monday, two weeks after a massive earthquake killed tens of thousands of people in Turkey and Syria.

The quake struck Turkey’s southern Hatay province, near the Syrian border, Turkey’s Disaster and Emergency Management Agency (AFAD) said Monday.

The United States Geological Survey (USGS) initially reported the quake as being of magnitude 6.4 at a depth of 10 kilometers before revising it down to 6.3 magnitude.
https://www.yahoo.com/news/magnitude-6-3-aftershock-rocks-143100286.html

That aftershock was accompanied by two smaller quakes of 4.2 (nearest) and 4.1 (further to the NNE). Further north were a 4.3 mag quake in Kahramanmaras province and a 4.1 mag quake in the mountains of Malatya province.
 

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