Areas of interest
Volcanology, Seismo-acoustics, Infrasound, Remote sensing
Education
- B.Sc., U. Chile, 2013
- M.Sc., UNAM, 2015
- Ph.D., UCSB, 2023
- Postdoctoral Fellow, LMV, 2024~2026
Biography
My first steps in science started at the University of Chile (Santiago), where I did a Bachelor鈥檚 in Physics (2011). I remember I really liked classical mechanics, fractals, and self-organized systems, but at some point I realized I really wanted to understand volcanoes. I went to the National Autonomous University of Mexico and did a Master in Earth Science with Dr. F.J. S谩nchez Sesma as my advisor (2015). My Master鈥檚 thesis was about a semi-analytical model to solve the interactions of an axis-symmetric explosive source within a perfect fluid, embedded in a 3D electrodynamic space (De Negri, 2015). After this, I went back to Chile and worked at the 鈥淧rograma de Riesgo S铆smico鈥� (Seismic Risk Program; PRS) in the Geophysics Department of the University of Chile. At the PRS I started investigating about the infrasound of natural phenomena produced in large amounts by earthquakes and volcanic eruptions, among many other interesting sources. This experience made me decide to apply for PhD in Earth Science at the University of California, Santa Barbara (UCSB) to work with Dr. Robin Matoza, who appeared many times in the papers I read when learning about infrasound and volcanoes. During my PhD I developed a methodology I called 鈥淎utomated Rapid Climatological Azimuth Deviation Estimation鈥� (github.com/rodrum/arcade), which I have used to characterize previously hidden volcanic signals in a very remote volcanic area, considerably improve the location of volcanic sources, and perform remote year-long characterization of persistent volcanic activity. My latest work has been about a long-range (>200 km) volcano monitoring system called the 鈥淰olcano Information System鈥� (VIS), during my postdoctoral stay (Jan 2024鈥揓an 2026) at the Laboratoire Magmas et Volcans (LMV), at the Universit茅 Clermont Auvergne (UCA), in Clermont-Ferrand, France. This work has been presented in several international conferences (EGU 2024, AGU 2024, EGU 2025, and SnT2025), and the methodology has been made available as well (github.com/rodrum/openVIS).
Now at 911吃瓜 I am using my background knowledge in remote infrasound of energetic events like volcanic eruptions to develop and test a seismo-acoustic monitoring system for mass removal events (debris flows, rockfalls, etc.) near Mt. Meager.
Recent Publications
- De Negri et al. (2025). Evaluating the temporal capability of empirical climatologies for rapid long-range volcanic infrasound propagation estimates using a multidecadal data set of persistent vanuatu volcanic eruptions. Geophysical Journal International, 241(1), 268鈥�290. doi: 10.1093/gji/ggaf027
- Francoeur, Matoza, Ortiz, & De Negri (2025). Identification of transient seismo-acoustic signals from crashing ocean waves: template matching and location of discrete surf events. Geophysical Journal International, 243(2), ggaf317. doi: 10.1093/gji/ggaf317
- Gheri et al. (2025). Detecting explosive volcanism using global long-range infrasound data. Journal of Volcanology and Geothermal Research, 462, 108320. doi: 10.1016/j.jvolgeores.2025.108320
- Ortiz, Matoza, Bernard, De Negri, & Ruiz (2024). Seismo-Acoustic Characterization of the 2018 Sierra Negra Caldera Resurgence and Fissure Eruption in the Gal谩pagos Islands. Journal of Geophysical Research: Solid Earth, 129(10), e2024JB029144. doi: 10.1029/2024JB029144
- De Negri & Matoza (2023). Rapid location of remote volcanic infrasound using 3D ray tracing and empirical climatologies: application to the 2011 cord贸n caulle and 2015 calbuco eruptions, chile. Journal of Geophysical Research: Solid Earth, 128(3), e2022JB025735. doi:10.1029/2022JB025735
- De Negri, Rose, Matoza, Hupe, & Ceranna (2022). Long鈥怰ange Multi鈥怸ear Infrasonic Detection of Eruptive Activity at Mount Michael Volcano, South Sandwich Islands. Geophysical Research Letters, 49(7).doi: 10.1029/2021GL096061