Collective seismic reorganization prior to volcanic eruptions: a comparative multi-event, multi-volcano network-based study

This record presents a volcanic-focused extension of the TAMC–FRANJAMAR framework,originally introduced for the retrospective and reproducible analysis ofcollective statistical behavior in multistation seismic networks(see Martinez Sanchez, F. J., TAMC–FRANJAMAR: A retrospective and reproducibleframework for the analysis of collective statistical behavior in multistationseismic networks, Zenodo, DOI: https://zenodo.org/records/18085580 ). While the original implementation was illustrated primarily using large tectonicearthquakes, the present work extends the methodology to volcanic systems,with a particular focus on eruptive episodes at Mount Etna, Kīlauea, and anIcelandic volcanic system.The analysis is designed to investigate how collective seismic organizationemerges and reorganizes in the vicinity of eruptive transitions, using anevent-centered and network-based approach. This repository includes an interactive and configurable analysis pipelinethat automatically retrieves seismic waveform data from public FDSN services(e.g., USGS and IRIS) within user-defined temporal windows.Users can specify eruptive reference times, select matched control periods,and generate null models and placebo tests under a unified methodologicalframework.The pipeline supports systematic comparison across multiple eruptions andacross distinct volcanic systems, enabling inter-volcano analyses underidentical statistical and processing assumptions. Collective seismic reorganization is quantified using network-level metricsthat capture multistation variability, temporal synchrony, and collectivedeviations.All parameters are fixed a priori and applied identically across real events,control windows, and null-model realizations, ensuring methodologicalconservatism and minimizing event-specific tuning or overfitting. In addition to its application to volcano seismology, the TAMC–FRANJAMARframework has been independently extended to other complex dynamical systems,including aerodynamic and turbulent flow analyses(see Martinez Sanchez, F. J., TAMC–FRANJAMAR extension to aerodynamics, Zenodo,DOI: https://zenodo.org/records/18288994), highlighting the generality of the approach beyondgeophysical contexts. This framework is strictly retrospective and methodological.It is not designed, validated, or intended for real-time monitoring,prediction, early warning, or operational decision-making.Any such use falls outside the scope of this work and is not supportedor endorsed by the author.