Global Navigation Satellite Systems (GNSS) and Interferometric Synthetic Aperture Radar (InSAR) are both very well established approaches for measuring tectonic and volcanic activity. Over recent years, improvements in data quality, the automation of processing pipelines, cheaper measurement hardware, and cheaper computation has put our research community on the brink of complete surveillance of surface motions – a situation in which, for some regions, we will be able to map every actively slipping fault and actively deforming volcanic zone, more easily identify areas of heightened stress accumulation, and automatically report when surface motions accelerate.

In this session we would like to foster an exchange of ideas and experiences about how to best continue towards this state of surveillance. In particular, we would like to explore how the GNSS, InSAR, and tectonic- and volcanic- modelling communities can work together in the coming years to extract the most value from our continued installation, processing, and interpretation efforts. How many stations will we need? Do we have enough data? What experiments and simulations should we prioritise? What are the economic (personnel, computation, satellites, natural disasters), sustainability, and strategy (e.g. centralisation vs. decentralisation) considerations?

We invite scientists and related stakeholders from our communities to come together to share their work on full value extraction of our GNSS and InSAR data. Whether you want to present some case study of a certain region, or you want to present some analysis at a larger spatial and computational scale, we welcome you to the discussion.