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

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Discussion Overview

The discussion centers on the recent series of significant earthquakes in Turkey, including magnitudes 7.8, 7.5, 6.7, and 6.0, along with their aftershocks. Participants explore the geological context, the impact on the region, and the ongoing recovery efforts. The conversation includes technical aspects of seismic activity, humanitarian concerns, and the implications for future geological events.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants provide detailed information about the earthquakes, including their magnitudes, locations, and depths.
  • Others discuss the geological context, mentioning the East Anatolia Fault and the Taurus Mountains as significant factors in the seismic activity.
  • There are reports of rising death tolls and injuries, with varying figures presented by different sources, indicating a rapidly changing situation.
  • Some participants express concern about the humanitarian impact and the ongoing rescue efforts, highlighting the challenges posed by the region's political situation.
  • A later reply raises questions about the potential for future seismic activity and the implications of aftershocks in the affected areas.
  • One participant speculates on the long-term geological risks in relation to historical seismic events in the region.

Areas of Agreement / Disagreement

Participants generally agree on the severity of the earthquakes and their immediate impact, but there are multiple competing views regarding the geological implications and future risks. The discussion remains unresolved regarding the exact figures of casualties and the effectiveness of recovery efforts.

Contextual Notes

Limitations include the rapidly changing nature of casualty figures, the dependence on various sources for information, and the uncertainty surrounding future seismic activity in the region.

Who May Find This Useful

This discussion may be of interest to those studying geology, seismology, disaster response, and humanitarian aid, as well as individuals following current events related to natural disasters.

  • #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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