Stunning interactive map shows year of earthquakes rocking New Zealand

A stunning interactive map shows a year's worth of earthquakes rocking New Zealand.

The data was captured by the United States Geological Survey (USGS) between July 2017 and July 2018.

Loaded onto an online visualiser, it allows people to see all the quakes large enough for the USGS to record during this period, along with their depth and strength.

The interactive map shows a long line of quakes running up north from New Zealand. This was due to the Kermadec Trench, a subduction zone which extends from the Hikurangi Plateau, just north of New Zealand, to the north past Raoul Island.

A subduction zone is where two tectonic plates collide, pushing one under the other and causing enormous forces to build up until they're released in an earthquake.

Another area to see high levels of earthquake activity was around Kaikoura. The South Island town was struck by a massively destructive 7.8-magnitude earthquake in 2016, which caused a large number of aftershocks in 2017 and 2018.

Data from GNS Science shows that the region had roughly 3000 earthquakes in 2018 - more than anywhere else in New Zealand during this time period. This included many very minor quakes.

GNS said other volatile areas in 2018 include around Te Araroa near the East Cape, which was rocked by its own massive earthquake in 2016, and Fiordland.