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Durham University

Institute of Hazard, Risk and Resilience

All Future Events

IHRR Seminar: Maxwell Wilkinson, Low-cost GNSS: An emerging tool to monitor the surface deformation of geological hazards using bespoke geodetic networks

22nd October 2018, 13:00 to 14:00, W309, Geography

A proliferation of low-cost Global Navigation Satellite System (GNSS) receivers with single-centimetre precision is occurring as a critical component of autonomous vehicle development and preparedness for mass-market. Adaptation of this hardware and deployment as geodetic networks provides geoscientists with a tool to monitor surface deformation at low-cost and with high temporal resolution in support of specific science cases. The Internet-of-Things provides cheap, low-powered micro-hardware which can be programmed to record and manage GNSS data in the field. In addition, the continual reduction in data transfer costs through GSM networks now makes it possible to remotely monitor ongoing surface deformation within such geodetic networks with low-latency and at low cost. The application of low-cost GNSS to monitor coseismic and postseismic deformation in the near-field will be presented for earthquakes in Central Italy and New Zealand, with implications for the resilient design of critical infrastructure and our understanding of earthquake processes. Additional deployment examples include monitoring of infrastructure in post-earthquake and cyclical subsurface gas storage scenarios. This low-cost monitoring approach is being applied to other geological hazards with an upcoming volcano deployment and plans for a proof of concept deployment in relation to mass wasting. Ongoing technological advancement of the system and progress in the area of network design will also be presented.

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