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Session: An Innovative Photonic Vision of Volcanoes and Geothermal Systems

Type: Oral

Date: 10/10/2024

Time: 09:00 AM

Room: Stanley Park Ballroom

A New Imaging Standard for Volcanic Systems Through Fiber Sensing and Novel Processing Algorithms

Seismic tomography, a concept with nearly five decades of history, has significantly advanced our understanding of subsurface structures. In particular, high-quality tomographic imaging can provide valuable insights into the dynamics of volcanic systems. Recent advances in processing algorithms and computational architectures have enabled a new rise in the applications of tomographic approaches to magmatic systems. Furthermore, the advent of fiber sensing technologies for seismological applications has opened new avenues for exploring volcanic systems at a resolution unattainable by conventional station networks. The high spatial sampling and ease of deploying distributed acoustic sensing (DAS) instruments on telecommunication cables make DAS a powerful tool for characterizing subsurface structures of volcanoes at unprecedented scales and resolutions compared to dedicated nodal deployments.

In this presentation, I showcase successful examples of traveltime tomographic applications to volcanic systems, where DAS data are inverted using novel physics-based and machine-learning processing algorithms. The extensive range of modern DAS instruments enables the creation of high-resolution images of structures in the upper crust, offering a new outlook on volcanic science. We conclude by describing how future applications could leverage the full bandwidth DAS recordings inverted using full-waveform methodologies in which primaries and secondary waves contribute to setting a new standard for tomographic imaging.

Presenting Author: Ettore

Additional Authors