Video and seismic observations of Strombolian eruptions at Erebus volcano, Antarctica

Dibble, R. R.; Kyle, Philip R.; Rowe, C. A.

doi:10.1016/j.jvolgeores.2008.07.020

Cited by 41 publications

(36 citation statements)

References 18 publications

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“…The Erebus Volcanic Province represents the largest area of exposed Late Cenozoic volcanic rocks and the longest and most complete record of alkaline volcanism in Antarctica. The volcanic deposits on land range in age from approximately 19 Ma to current Strombolian-style activity within the summit crater of the Erebus Volcano (Dibble et al 2008: Kelly et al 2008. Evidence for older activity is from volcaniclastic sediments and tephra found in drill cores (CIROS-1, MSSTS-1, Cape Roberts, and AND-2A) and extends the history of alkaline volcanism in this area back to 26-20 Ma (Gamble et al 1986;Barrett 1987;McIntosh 1998McIntosh , 2000.…”

Section: Volcanism In the Mcmurdo Sound Areamentioning

confidence: 98%

40Ar–39Ar dating of volcanogenic products from the AND-2A core (ANDRILL Southern McMurdo Sound Project, Antarctica): correlations with the Erebus Volcanic Province and implications for the age model of the core

et al. 2010

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The AND-2A drillcore (Antarctic Drilling Program-ANDRILL) was successfully completed in late 2007 on the Antarctic continental margin (Southern McMurdo Sound, Ross Sea) with the aim of tracking ice proximal to shallow marine environmental fluctuations and to document the 20-Ma evolution of the Erebus Volcanic Province. Lava clasts and tephra layers from the AND-2A drillcore were investigated from a petrographic and stratigraphic point of view and analyzed by the Ar-40-Ar-39 laser technique in order to constrain the age model of the core and to gain information on the style and nature of sediment deposition in the Victoria Land Basin since Early Miocene. Ten out of 17 samples yielded statistically robust Ar-40-Ar-39 ages, indicating that the AND-2A drillcore recovered a parts per thousand currency sign230 m of Middle Miocene (similar to 128-358 m below sea floor, similar to 11.5-16.0 Ma) and > 780 m of Early Miocene (similar to 358-1093 m below sea floor, similar to 16.0-20.1 Ma). Results also highlight a nearly continuous stratigraphic record from at least 358 m below sea floor down hole, characterized by a mean sedimentation rate of similar to 19 cm/ka, possible oscillations of no more than a few hundreds of ka and a break within similar to 17.5-18.1 Ma. Comparison with available data from volcanic deposits on land, suggests that volcanic rocks within the AND-2A core were supplied from the south, possibly with source areas closer to the drill site for the upper core levels, and from 358 m below sea floor down hole, with the "proto-Mount Morning" as the main source

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Section: Volcanism In the Mcmurdo Sound Areamentioning

confidence: 98%

40Ar–39Ar dating of volcanogenic products from the AND-2A core (ANDRILL Southern McMurdo Sound Project, Antarctica): correlations with the Erebus Volcanic Province and implications for the age model of the core

et al. 2010

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“…Oppenheimer et al, 2004;Francis et al, 1993), or a supply of gas bubbles from depth (Witham and Llewellin, 2006;Bouche et al, 2010). It can be shown experimentally that processes occurring at depth will manifest themselves at the surface as changes in the lake's behaviour, for example its surface level or gas flux (Divoux et al, 2009). It follows therefore, that observations of lake properties can yield valuable insights into the processes occurring at depth in the magmatic system, where direct measurements are not possible.…”

Section: Introductionmentioning

confidence: 99%

Decadal persistence of cycles in lava lake motion at Erebus volcano, Antarctica

Peters

Kyle

Kingsbury

2014

Earth and Planetary Science Letters

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Studies of Erebus volcano's active lava lake have shown that many of its observable properties (gas composition, surface motion and radiant heat output) exhibit cyclic behaviour with a period of ∼10 min.We investigate the multi-year progression of the cycles in surface motion of the lake using an extended (but intermittent) dataset of thermal infrared images collected by the Mount Erebus Volcano Observatory between 2004 and 2011. Cycles with a period of ∼5-18 min are found to be a persistent feature of the lake's behaviour and no obvious long-term change is observed despite variations in lake level and surface area. The times at which gas bubbles arrive at the lake's surface are found to be random with respect to the phase of the motion cycles, suggesting that the remarkable behaviour of the lake is governed by magma exchange rather than an intermittent flux of gases from the underlying magma reservoir.

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“…The upper part of the magmatic system forms a lava lake with a radius of at present five meters (it has varied over the years up to 15 m) (Aster et al, 2003). The activity of Erebus volcano is prevalently Strombolian and several explosions per day occur due to gas slugs of a few meters in radius, emerging at the lava lake as observed by video recordings (Aster et al, 2004;Dibble et al, 2008). Some explosions can occur also at other vents located near the lava lake, within the Inner Crater (80 m in radius) contained in turn within the Main Crater with a radius of 250 m. In the last thirty years the activity of Erebus has also shown rare phreatic eruptions.…”

Section: Erebusmentioning

confidence: 99%

Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results

Lauro

Martino

Falanga

et al. 2011

Nonlin. Processes Geophys.

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Abstract. We investigate the physical processes associated with volcanic tremor and explosions. A volcano is a complex system where a fluid source interacts with the solid edifice so generating seismic waves in a regime of low turbulence. Although the complex behavior escapes a simple universal description, the phases of activity generate stable (self-sustained) oscillations that can be described as a nonlinear dynamical system of low dimensionality. So, the system requires to be investigated with non-linear methods able to individuate, decompose, and extract the main characteristics of the phenomenon. Independent Component Analysis (ICA), an entropy-based technique is a good candidate for this purpose. Here, we review the results of ICA applied to seismic signals acquired in some volcanic areas. We emphasize analogies and differences among the self-oscillations individuated in three cases: Stromboli (Italy), Erebus (Antarctica) and Volcán de Colima (Mexico). The waveforms of the extracted independent components are specific for each volcano, whereas the similarity can be ascribed to a very general common source mechanism involving the interaction between gas/magma flow and solid structures (the volcanic edifice). Indeed, chocking phenomena or inhomogeneities in the volcanic cavity can play the same role in generating selfoscillations as the languid and the reed do in musical instruments. The understanding of these background oscillations is relevant not only for explaining the volcanic source process and to make a forecast into the future, but sheds light on the physics of complex systems developing low turbulence.

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Video and seismic observations of Strombolian eruptions at Erebus volcano, Antarctica

Cited by 41 publications

References 18 publications

40Ar–39Ar dating of volcanogenic products from the AND-2A core (ANDRILL Southern McMurdo Sound Project, Antarctica): correlations with the Erebus Volcanic Province and implications for the age model of the core

40Ar–39Ar dating of volcanogenic products from the AND-2A core (ANDRILL Southern McMurdo Sound Project, Antarctica): correlations with the Erebus Volcanic Province and implications for the age model of the core

Decadal persistence of cycles in lava lake motion at Erebus volcano, Antarctica

Self-sustained vibrations in volcanic areas extracted by Independent Component Analysis: a review and new results

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