The First Second of Volcanic Eruptions from the Erebus Volcano Lava Lake, Antarctica—Energies, Pressures, Seismology, and Infrasound
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Analysis of Seismic Similarity in Strombolian Eruptions from Mount Erebus, Antarctica By
II ABSTRACT Mount Erebus has long been recognized to produce very similar seismic signatures associated with its Strombolian eruptions. decorrelation of the coda, accompanied by relative stability in the early seismogram. Using coda wave interferometry, this decorrelation was interpreted as a median change within the volcano. Closer examination of this data in this thesis shows that clipping du...
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Introduction: We have obtained multiple contemporaneous ground and space-based visible and hyperspectral infrared observations of a persistent active lava lake, one of the rarest volcanonological phenomenon. This unique dataset advances our understanding of remote sensing of lava lake activity on Earth and Io. The Mt. Erebus lava lake: Active lava lakes are the top of an open magma system and p...
متن کاملSulfur Degassing from Mt. Erebus Volcano, Antarctica
SO2 emission rates from Erebus volcano show periodicity, which directly relates to lava lake convection and magma and conduit processes. Mt. Erebus is a 3794 m stratovolcano with a persistently degassing convecting, phonolite lava lake. Lava lake SO2 emission rates were collected from 1992 to 2003 using the correlation spectrometer (COSPEC) and in 2003 and 2005 using a miniature ultra-violet di...
متن کاملVolcanic eruptions observed with infrasound
[1] Infrasonic airwaves produced by active volcanoes provide valuable insight into the eruption dynamics. Because the infrasonic pressure field may be directly associated with the flux rate of gas released at a volcanic vent, infrasound also enhances the efficacy of volcanic hazard monitoring and continuous studies of conduit processes. Here we present new results from Erebus, Fuego, and Villar...
متن کاملEruptive history and magmatic stability of Erebus volcano, Antarctica: Insights from englacial tephra
A tephrostratigraphy of the active Antarctic volcano, Mt. Erebus, was determined from englacial tephra on the ice-covered flanks of Erebus and an adjacent volcano. The tephra are, used to reconstruct the eruptive history and magmatic evolution of Erebus. Scanning electron microscope images and Image Particle Analysis suggest the tephra formed in phreatomagmatic and magmatic eruptions and in som...
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