2022 Graduate Student Showcase

Title of Submission

Dynamics of Rain-Triggered Lahars Inferred from Infrasound Array and Time-Lapse Camera Correlation at Volcán de Fuego, Guatemala

Degree Program

Geoscience, PhD

Major Advisor Name

Jeffrey Johnson

Type of Submission

Scholarly Poster


We use both seismic and infrasound monitoring to quantify both the ground vibrations associated with the passing flow and detect the passage of low frequency atmospheric sound waves associated with these mudflows, respectively. The time-lapse cameras can be used to verify lahar passages and channel responses as these flows move downstream, and correlate stage height with flow behaviors observed in the infrasonic signals. With the data collected over this field campaign, we hope to quantify flow parameters such as velocities, stage height, and the frequency of these rain-triggered mudflows. Cataloging and ensembling lahars over the course of a rainy season is amenable to a statistical analysis of flow behaviors and characterizations related to these volcanic hazards.

Funding Information

National Science Foundation Graduate Research Fellowship Program under Grant No. 1946726 (FAIN) & a NSF EAR grant 1914491.

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