Following is a brief, preliminary report on our GPS work around the Izmit earthquake zone. Four stations were operating in the coseismic earthquake area prior to the event.
All stations continue to operate.
Details are on the Web. These stations should serve well to monitor short-term postseismic deformation. They should operate for the next 5-6 months at a minimum. They are being tied to nearby stable sites during the current survey campaign to allow extension of the observation history if this is deemed useful. These sites were selected on the basis of preearthquake history, and to provide sites at a range of distances from the fault out to about 50-60 km.