Summary & Purpose
Lahars are one of the greatest hazards at many volcanoes, including Volcán de Fuego (Guatemala). On 1 December 2018 at 8:00pm local Guatemala time (2:00:00 UTC), an hour-long lahar event was detected at Volcán de Fuego by two permanent seismo-acoustic stations along the Las Lajas channel on the southeast side. To establish the timing, duration, and speed of the lahar, infrasound array records were examined to identify both the source direction(s) and the correlated energy fluctuations at the two stations. Co-located seismic and acoustic signals were also examined, which indicated at least 5 distinct energy pulses within the lahar record. We infer that varying sediment load and/or changes in flow velocity is shown by clear fluctuations in the acoustic and seismic power recorded at one of the stations. This particular event studied with infrasound provides insight into how lahars occur around Volcán de Fuego.
Date of Publication or Submission
NSF EAR Grant: 1914491
Single Dataset or Series?
.mat and .txt
A brief explanation of this data is given in README file. More details and processed analysis of these data are provided in a manuscript being considered for publication.
1 December 2018
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Bosa, Ashley R.; Johnson, Jeffrey B.; De Angelis, Silvio; Lyons, John J.; Roca, Amilcar; Anderson, Jacob F.; and Pineda, Armando, "Dataset for Tracking Secondary Lahar Flow Paths and Characterizing Pulses and Surges Using Infrasound Array Networks at Volcán Fuego, Guatemala" (2021). Boise State University Infrasound Data Repository. 6.
Available for download on Thursday, September 02, 2021