GeoNet beta

You're viewing phase one of the GeoNet beta site. Features and content may change. Read this news article to find out what's happening. www.geonet.org.nz continues to run as usual.

Earthquake
Earthquake

Find the latest quakes, search the full catalogue, and learn about our monitoring.
- Earthquakes
- Search
- Drums
- Forecasts
- Historical events
- Slow slip
- Swarms
- Statistics
- Strong motion
- FAQ
- Gallery
- Glossary
- How
- Intensity
- Videos
Volcano
Volcano

View current volcanic activity, alert levels, and updates, and learn how GeoNet monitors New Zealand's active volcanoes.
- FAQ
- Gallery
- Glossary
- How
- Videos
Landslide
Landslide

Find information on recent landslides, understand landslide hazards, and learn how landslides are monitored and assessed.
- FAQ
- Glossary
- How
- Videos
Tsunami
Tsunami

Learn about tsunami hazards, warning signs, and alerts, and how tsunamis are monitored in New Zealand and the Pacific region.
- FAQ
- Glossary
- How
- Videos
Data Discovery
Data discovery

Explore GeoNet's data visualisations, maps, and catalogues.
Data Types
Data types

Get an overview of the different kinds of data available on GeoNet and what each one shows.
Data Access
Data access

Find ways to view, download, and use GeoNet data and services.

Live tsunami gauge data

View tsunami gauge data from the last 36 hours. You can see de-tided and sea level data for all tsunami gauge sensors on the GeoNet network in one graph.

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De-tided Tsunami Gauge Chart

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Sea Level Tsunami Gauge Chart

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 most recent from left to right. Within the sampling period of one minute, the dark part of the trace shows the average sea level height, whilst the grey part shows the maximum and minimum values.

The most obvious feature of actual sea level recordings is the natural daily tidal variation, about 12 hours between each high or low tide
Sheltered harbour installations such as Tauranga and Wellington show very little "grey" variation.
De-tided readings are only available for sites where the tidal model has been computed. An initial model requires several months of data to be collected first.