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) ...

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 ...

Map and search of GeoNet sensor networks that deliver high-rate-data. Use the date search filter to see sensors that were operating in the past. More detailed station/sensor information can be ...

Frequently asked questions about volcanoes. What do I do in a volcanic eruption? Please read the advice from the National Emergency Management Agency. If an eruption were to occur, what are the ...

Felt earthquake reports are quantified using the New Zealand Modified Mercalli (MM) intensity scale. The MM scale grades the impact of an earthquake on people living on the earth's surface, and so can ...

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 ...

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.

Keep an eye out for slow-slip events or "silent" earthquakes showing up on our GNSS instruments.

The size of an earthquake is often described using magnitude, which is the amount of energy released during an earthquake. However, not all of the energy released in an earthquake will necessarily be ...

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 ...

New Zealanders live on the edge. Depending on their location, it might be the edge of the Australian Plate or it might be the edge of the Pacific Plate. The active Pacific-Australian Plate boundary ...