The Simav-Gediz cluster is named for two significant earthquakes in
central Turkey, the 7.2 Mw Gediz earthquake on March 28, 1970, and the
5.9 Mw Simav earthquake on May 19, 2011. Initial work on these clusters
was done by Ezgi Karasözen. The cluster includes both sequences as well
as other well-recorded events in the vicinity. All events were recorded
to at least 10° epicentral distance and most were recorded
teleseismically. The seismograph network in this area was sparse before
about 2007, but quite dense afterwards, so all events after that time
have depth control from near-source and local-distance readings. Depth
control for earlier events is a mixture of local-distance readings,
teleseismic depth phases, and, in 17 cases lacking any other constraint
(all prior to 1977), a default depth sampled from a probability density
function that was based on the distribution of events with depth
constraint. The probability density function has a peak at 9 km and a
spread of 2.5 km. Sampled depths are required to be within 2-sigma of
the mean (i.e., 4-14 km).
