May 30, 2013. Under New Zealand's capital city is most interesting seismic event — it is above the place where the earth is with a magnitude equivalent to an earthquake magnitude of 7 points. Despite the fact that such a strong push claims to be the strongest in the last 150 years, its presence can be confirmed only seismological reports and graphs as well as the phenomenon belongs to the category "
Such a wobble in the Earth's crust is possible because of the deep movement called "slip Kapiti" or "shift Kapiti" west of Wellington at 40 km below the surface of the earth on the line from Fr. Kapiti to Marlborough length of 100 km. This geologic event in nature is very similar to the earthquake, but if the usual tremor lasts a few seconds, the total phase shift described may take about a year. In both cases there is a juxtaposition of two lithospheric plates.
Silent earthquakes in New Zealand began to study in 2002, and since monitoring began was recorded three "shift Kapiti." Two previous lasted about a year, the time interval between them was 5 years between the second and the third, the current episode, which started in January, and 5 years.
While the nature of the changes is not fully understood by geologists and seismologists also not clear how all the possible consequences for humanity. But as the historical record, after detecting the shift Kapiti in 2008 in the city of Upper Hut recorded up to 30 weak aftershocks with a magnitude of no more than 3 points. Perhaps they were aftershocks from the main "silent earthquakes".
Silent earthquakes occur in 4 locations on the islands of New Zealand, they also have a place in all the subduction zones of the world, including Japan and North America. On the site of the tectonic plate beneath the North of Iceland about 40% of underground movements belong to the category of "silent earthquakes".