Powerful earthquake strikes eastern Turkey

by Joe on Oct. 23rd, 2011

Map of Turkey: The city of Van, on the far right of this map near a large lake, was the closest to the earthquake.
Map of Turkey: The city of Van, on the far right of this map near a large lake, was the closest to the earthquake.Courtesy USGS
A 7.2 magnitude earthquake struck eastern Turkey near the city of Van at 5:42am today, the most powerful earthquake in Turkey for at least a decade.

The US Geological Survey (USGS) originally gave the magnitude as 7.3 but later corrected it to 7.2 with a depth of 12.4 miles.

The Turkey's Kandilli observatory told a news conference it estimated 500-1,000 people could have been killed as a result of the earthquake.

Within an hour of the initial 7.2 earthquake, two aftershocks of magnitude 5.6 struck the same region.

Your Comments, Thoughts, Questions, Ideas

Michael's picture
Michael says:

Boğaziçi University in Turkey provided a press bulletin today with maps, updates on casualties/damage, and information on historical seismicity in the area.

From the fault plane solutions shown in the bulletin, the quake was caused by movement along a reverse fault. The black quadrants of the "beachball"-like diagrams indicate where the P-wave (compressional) first-motions are away from the source. Arild Andresen from the University of Oslo provides a good tutorial on how to interpret fault plane solutions.

posted on Mon, 10/24/2011 - 12:33pm

Post new comment

The content of this field is kept private and will not be shown publicly.
  • Allowed HTML tags: <a> <h3> <h4> <em> <i> <strong> <b> <span> <ul> <ol> <li> <blockquote> <object> <embed> <param> <sub> <sup>
  • Lines and paragraphs break automatically.
  • You may embed videos from the following providers vimeo, youtube. Just add the video URL to your textarea in the place where you would like the video to appear, i.e. http://www.youtube.com/watch?v=pw0jmvdh.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Images can be added to this post.

More information about formatting options