Continuous GPS

continuous gps

To be able to monitor deformation continuously, or in near real-time, continuous GPS observations are needed.

Occasional GPS measurements only give a snapshot of the deformation at the time of each new set of measurements. For example, if a GPS survey is made through the Marlborough region every three years, we can only get a new picture of the deformation every three years.

GPS instruments are installed at permanent sites to measure the movement of these sites continuously. We are also able to process the data almost in real time so that we can have a continuous, nearly real-time measurement of motion at these sites.

The figure shows the continuous GPS stations currently operating in New Zealand. Stations were installed by GNS Science and LINZ over the past decade, under the GeoNet project. Data can be viewed on the LINZ sites.