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Conical Hill cGPS siteWe use GNSS data from a combination of continuous and semi-continuous GNSS stations in a transect across the Southern Alps (New Zealand) to measure rates of relative vertical movement with uncertainties that are typically 0.3-0.5 mm/yr. The estimated vertical rates define a fairly smooth profile across the range, with the highest rates of ~5 mm/yr found near the crest of the mountains and ~20-30 km southeast of the Alpine Fault. The distribution of vertical rates supports models based on horizontal velocities from GPS surveys in which interseismic coupling on the Alpine Fault decreases from 100% near the surface to zero by 13-18 km depth.


This project has been undertaken in collaboration with GNS Science, MIT (USA), University of Boulder at Colorado (USA) and UNAVCO (USA).

People involved

Paul Denys
Chris Pearson

Related Research

Earth deformation

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