Monday, Oct. 24, 2022, 3 – 4 p.m.
Micron Center for Materials Research (MCMR), Room 106
Please join the Department of Geoscience for an in-person seminar given by Greg Waite from Michigan Technological University! Waite will present “Lava lake seismo-acoustics: the utility of repeating signals at active volcanoes” at 3 p.m. in MCMR, Room 106.
Waite writes: “Open-vent, low-viscosity volcanoes, produce a range of geophysical signals during low-level eruptive activity. Fluid processes often generate highly repetitive events that can be recorded by local seismic and infrasound stations. I will describe results from work at three volcanoes in which combined temporary seismic and infrasound arrays allow for a detailed catalog of small events associated with outgassing at the relatively shallow lava free surface: Pacaya, Guatemala; Kīlauea, Hawaii; and Villarrica, Chile. These events offer a means to investigate characteristics of the conduit geometry, variability in gas emissions, and changes in the level of the lava free surface. Stacking thousands of events can also provide a glimpse of faint signals from deeper sources that are otherwise obscured by noise.”