Singapore is generally shielded from earthquakes by Indonesia's Sumatra Island, but it does get mild aftershocks during strong temblors in Indonesia. |
During a typical year, 18 major temblors and one great earthquake occur worldwide. |
Seismic instruments will be installed along both plates in a section of the fault where small temblors of magnitude 2.0 are frequent. |
In recent decades, quakes felt in San Diego, a city lacking a big disaster in its history, have tended to be far-away temblors with a long reach. |
In the case of earthquakes, the sensors are used to detect the onset of temblors. |
The objective was to protect the cathedral, its occupants, and its contents during the major earthquakes and smaller temblors that could be expected over several centuries. |