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 1976
This is a list of earthquakes in 1976. Only earthquakes of magnitude 6 or above are included, unless they result in damage and/or casualties, or are notable for some other reason. All dates are listed according to UTC time. Maximum intensities are indicated on the Mercalli intensity scale and are sourced from United States Geological Survey (USGS) ShakeMap data. The main point of note from this year was the devastation seen across the globe from several catastrophic events. Several countries experienced their worst ever natural disasters. Chronologically, Guatemala in February suffered 23,000 deaths. Indonesia in June had an earthquake causing 6,000 deaths. China in July had officially 242,000 deaths from the 1976 Tangshan earthquake. This was the worst toll from an earthquake for over 400 years. Shortly afterwards the Philippines had 8,000 fatalities. Towards the year end Turkey had an event resulting in 5,000 deaths. Although not as devastating Italy had nearly 1,000 deaths in May with subsequent aftershocks causing further destruction.