Through a number of programmes, GNS works to develop and maintain scientific capability to rapidly assess and analyse earthquakes, ensure timely and accurate advice is provided to emergency management and stakeholders and inform the public about the event. Earthquake monitoring feeds into applications such as emergency response and the rapid analysis of possible tsunami. A 6.3-magnitude earthquake ripped through Christchurch, New Zealand, on Tuesday afternoon, killing at least 65 people. GeoNet is a collaboration between GNS, Toka Tū Ake EQC and Toitū Te Whenua LINZ and includes the National Geohazards Monitoring Centre (NGMC), which contributes significantly to the analysis of seismic data and monitors seismic activity around the country. An earthquake of magnitude 5.8 struck the eastern coast of North Island in New Zealand on Monday, the European Mediterranean Seismological Centre (EMSC) said. These data are acquired, collected, stored and made available for research and monitoring by the GeoNet programme. The largest recorded earthquake to have hit New Zealand rocked Wellington and the Wairarapa at 9:11pm, on 23 January 1855. Most earthquakes are too small to be noticed. Approximately 14-15,000 occur in and around the country each year. Continuous GPS is being used to monitor “slow” earthquakes, recording land movement down to a few millimetres. Earthquakes happen every day in New Zealand. ![]() ![]() Toka T Ake EQC has paid a further 10 billion, bringing the total insured cost. Nationwide, there are hundreds of seismographs and strong motion sensors monitoring thousands of small shakes and many large quakes per year. About 14,000 earthquakes occur in and around the country each year, of which between 150 and 200 are big enough to be felt. To date, the combined events have cost private insurers more than NZ21 billion.
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