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Temporal changes in eruptive behavior identified with coda wave interferometry and seismo-acoustic observations at Fuego Volcano, Guatemala

Jemile E. Erdem and Gregory P. Waite
Temporal changes in eruptive behavior identified with coda wave interferometry and seismo-acoustic observations at Fuego Volcano, Guatemala (in Understanding open vent volcanism and related hazards, William I. Rose (editor), Jose Luis Palma (editor), Hugo Delgado Granados (editor) and Nick Varley (editor))
Special Paper - Geological Society of America (November 2013) 498: 107-123

Abstract

Fuego Volcano (14 degrees 29'N, 90 degrees 53'W, 3800 m) is the southernmost vent of the north-south-trending Fuego-Acatenango volcanic complex. A basaltic-andesite stratovolcano, Fuego has had more than 60 subplinian eruptions since A.D. 1524, making it one of the most active volcanoes in the world. Since 1999, Fuego has exhibited continuous low-level activity, which alternates between periods of lava effusion with Strombolian explosions and periods of discrete explosions with no lava effusion. We analyzed explosions recorded on a broadband seismometer and infrasonic microphones in June and July 2008. The explosions were identified through a combination of visual field observations and the examination of infrasound records. Acoustic waveform cross-correlation indicated a highly repetitive source appropriate for investigating temporal variations in the wave field. The primary focus of this study is a time period from 8 to 27 June 2008, which included the emergence of a new lava flow. Using seismic coda wave interferometry analysis of 159 well-recorded explosions, we detected short-term relative changes in the velocity structure ranging from -0.23% to 0.61%. This rapid variation may indicate minor fluctuations in volatile content. Variations in seismic and acoustic wave arrival time differences, which might result from changes in source depth, are attributed to wind speed variations.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 498
Title: Temporal changes in eruptive behavior identified with coda wave interferometry and seismo-acoustic observations at Fuego Volcano, Guatemala
Title: Understanding open vent volcanism and related hazards
Author(s): Erdem, Jemile E.Waite, Gregory P.
Author(s): Rose, William I.editor
Author(s): Palma, Jose Luiseditor
Author(s): Granados, Hugo Delgadoeditor
Author(s): Varley, Nickeditor
Affiliation: Michigan Technological University, Department of Geological and Mining Engineering and Sciences, Houghton, MI, United States
Affiliation: Michigan Technological University, Geological Engineering and Sciences, Houghton, MI, United States
Pages: 107-123
Published: 201311
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 42
Accession Number: 2014-004169
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
N14°28'60" - N14°28'60", W90°52'60" - W90°52'60"
Secondary Affiliation: Universidad de Concepcion, CHL, ChileUniversidad Nacional Autonoma de Mexico, MEX, MexicoUniversidad de Colima, MEX, Mexico
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201404
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