Position: 37.506°N 20.563°E – Depth: 14 km
Tectonic Summary
From the USGS Information Page:
The October 25th, 2018, M 6.8 earthquake southwest of Lithakia, Greece, occurred as the result of rupture on or near the plate boundary between the Nubia (Africa) and the Eurasia plates. At the location of this earthquake, Nubia converges with Eurasia at a rate of roughly 28 mm/yr, subducting beneath Eurasia. Preliminary focal mechanisms for the earthquake indicate oblique slip on a near-vertical west-northwest striking fault or a moderately dipping north striking fault.
The region surrounding this event is seismically active and earthquakes of this size are not uncommon. Since 1900, 13 other earthquakes M 6.5 and larger have occurred within 200 km of this October 25, 2018, M 6.8 event. The largest was a M 7.3 on October 6, 1947, which occurred 145 km southeast of this event. On June 15th, 1995, a M 6.5 earthquake, 180 km inland to the northeast, resulted in 26 fatalities. On November 17, 2015, a M 6.5 earthquake occurred 130 km to the north, closer to the coast of Greece, resulting in two fatalities.
Jamaseis heliocoder trace (1) and Swarm trace (2) of AM.RC8C73.00.SHZ. The P wave arrival is annotated
Distance: 71.1 Deg. 7,899 km
Azimuth: 306.5 Deg.
Jamaseis trace of LD.WUPA.BHZ (West Chester University, West Chester PA).
SeisComP3 traces for AM.RC8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester PA), and LD.GEDE.BHZ (Greenville DE).
SeisComp3 screenshot showing the focal mechanism.