The Chara cluster is named for the town of Chara in the northern art of
Zabaykalsy Krai in eastern Russia. It includes several earthquakes in
the magnitude 5 range, the largest being a 5.8 mb event on August 21,
1994. All events were observed to at least 4.0° epicentral distance and
there is abundant teleseismic data. All events have depth control from
near-source and local-distance readings and some have teleseismic depth
phase constraint as well. The number of seismograph stations close
enough to be suitable for direct calibration is small but they are well
distributed and the location calibration is very robust.
