Induced seismicity in Basel
The largest event prompted concern from local residents. The six borehole seismometers installed near the Basel injection well to monitor the natural background seismicity and the geothermal stimulation recorded more than 13,500 potential events connected with the geothermal project, from which 3,124 were of sufficient quality to permit [hypocenter] determinations in the period 2–12 December 2006, which spanned the main stimulation and the decline in the event rate. During the post-stimulation period from 13 December 2006 onward, a further 350 locatable events were detected up to 2 May 2007, by which time events were occurring sporadically at around one per day. In all, locations for more than 3,500 events were determined.
List of earthquakes in 2006
Earthquakes in 2006 resulted in about 6,602 fatalities. The 2006 Yogyakarta earthquake was the deadliest with 5,749 fatalities. The 2006 Kuril Islands earthquake was the largest in 2006 at 8.3 on the moment magnitude scale. The 2006 Pangandaran earthquake and tsunami caused a significant tsunami that killed 730 people. Other significant earthquakes in 2006 struck Iran, Taiwan, China, Argentina, and Tajikistan.