The NZ Volcanic Alert Level system is based on 6 levels and is intended to describe the current status of each active volcano. People who need volcano related information ranges from local residents, ...

GeoNet collects information about the intensity of shaking that people experienced during an earthquake. There have been a few different varieties of reports in the history of collecting this data.

Strong-motion accelerometers are located in major centres of population, near significant faults, or in different types of building structures. They are capable of measuring very strong shaking ...

Waveform data from GeoNet's seismic, acoustic and tidal gauge instruments can be requested through the following service: ...

The tsunami that was caused by a M 9 earthquake in Chile hit the shores of New Zealand in the early hours of 15 August, taking 15 hours to arrive here. The tsunami and earthquake killed thousands of ...

The GeoNet catalogue is where all the technical information about earthquakes is stored. Information such as location, magnitude and arrival times of seismic waves. Since the 1930's, earthquakes in ...

The 1855 earthquake is the most severe earthquake to have occurred in New Zealand since systematic European colonisation began in 1840.

The seismic, and related, data stream naming conventions are based on historical usage together with recommendations from the SEED manual. Sometimes codes were created and used were no appropriate ...

The timestamp shown at the top right of the images is the time when the images were last refreshed. The previous 36 hours of sea level variations from all operational sites are displayed, oldest to ...

The timestamp shown at the top right of the seismograph drum shown above is the time when this image was last refreshed. The previous four hours (240 minutes) of seismic signals (also known as traces) ...

There were two severe earthquakes off the coast of Gisborne in March and May 1947, each generating large tsunamis in the surrounding area. The March tsunami was one of the largest tsunami in New ...

An interactive, multi-layered map displaying the peak strong motion data that GeoNet collected during the last hour. Select a site to view the PGA (g), PGV (cm/s) and MMI values. Sites are coloured to ...