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 1938
This is a list of earthquakes in 1938. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the list as they wouldn't have generated significant media interest. All dates are listed according to UTC time. This was once again a very busy year with 22 events reaching 7.0+. Topping the list was a huge quake which struck the Banda Sea, Indonesia in February. At a magnitude of 8.5 this was one of the largest earthquakes of all time. Despite the large size no deaths were reported. Considering the array of large events, the death toll for the year was only 296. Turkey saw the majority of the deaths due to a 6.6 magnitude event in April. November 1938 saw a series of large quakes strike off the east coast of Honshu, Japan. Also in November was a magnitude 8.3 which struck Alaska. Generally Indonesia and Japan saw most of the large 7.0+ events.