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Lithosphere-Atmosphere-Ionosphere Coupling after the 2003 Explosive Eruption of the Soufriere Hills Volcano, Montserrat

Dautermann, Thomas and Calais, Eric and Mattioli, Glen S. and Lognonne, Phillipe (2009) Lithosphere-Atmosphere-Ionosphere Coupling after the 2003 Explosive Eruption of the Soufriere Hills Volcano, Montserrat. Geophysical Journal International, 179 (3), pp. 1537-1546. Wiley-Blackwell. DOI: 10.1111/j.1365-246X.2009.04390.x.

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Official URL: http://www3.interscience.wiley.com/journal/122666184/abstract


Resonant coupling between the Earth and the atmosphere at frequencies where the solid Earth modes overlap the fundamental modes of the atmosphere allows for the triggering of oscillatory acoustic perturbations by ground excitation and vice-versa. Here, we describe oscillatory perturbations observed in the solid Earth (from volumetric borehole strainmeter data) and in the atmosphere (from GPS-derived ionospheric Total Electron Content) following the July~13, 2003, Soufri\`ere Hills Volcano explosion (Montserrat, Lesser Antilles). Spectral analysis shows an amplitude peak at 4~mHz for both datasets, with similar waveforms and signal duration. Using a normal mode summation technique, we show that both signals are explained by a single explosive source in the atmosphere. Similarities in waveforms, in particular a double wave train also reported after several other explosion-triggered atmospheric perturbations, result from the superposition of the dominant (fundamental) atmospheric modes that trigger resonant coupling with the solid Earth around 4 mHz.

Document Type:Article
Title:Lithosphere-Atmosphere-Ionosphere Coupling after the 2003 Explosive Eruption of the Soufriere Hills Volcano, Montserrat
AuthorsInstitution or Email of Authors
Dautermann, Thomasthomas.dautermann@dlr.de
Mattioli, Glen S.UNSPECIFIED
Lognonne, PhillipeUNSPECIFIED
Date:28 October 2009
Journal or Publication Title:Geophysical Journal International
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 1537-1546
Trampert, JeannotUNSPECIFIED
Keywords:TEC; Ionosphere; Coupling; Normal Modes; Numerical approximations and analysis; Ionosphere/atmosphere interactions; Volcano seismology; Acoustic properties; Dynamics of lithosphere and mantle; Explosive volcanism.
HGF - Research field:Aeronautics, Space and Transport (old), Aeronautics, Space and Transport
HGF - Program:Space (old), other
HGF - Program Themes:W - no assignement, other
DLR - Research area:Space, Aeronautics
DLR - Program:W - no assignement, L - no assignement
DLR - Research theme (Project):W -- no assignement (old), L -- no assignement
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Institute of Communication and Navigation > Navigation
Deposited By: Dr. Thomas Dautermann
Deposited On:09 Nov 2009 07:16
Last Modified:12 Dec 2013 20:44

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