Ima Itikarai

Magmatic volatile budgets of the 2014 Tavurvur eruption at Rabaul Caldera, Papua New Guinea

Melina Höhn, Brendan McCormick Kilbride, Margaret Hartley, Mike Burton et autres

Magmatic volatile budgets of the 2014 Tavurvur eruption at Rabaul Caldera, Papua New Guinea

Melina Höhn, Brendan McCormick Kilbride, Margaret E. Hartley, Mike Burton et autres

Rabaul is a caldera volcano on New Britain Island, Papua New Guinea, whose active cone Tavurvur ranks seventh globally for long-term SO2 and CO2 emissions. It is unknown why Rabaul is such a strong emitter of volcanic gases. Magma mixing between basaltic …

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Magmatic volatile budgets of the 2014 Tavurvur eruption at Rabaul Caldera, Papua New Guinea

Melina Höhn, McCormick Kilbride. Brendan T., Hartley. Margaret E., Mike Burton et autres

Rabaul is a caldera volcano on New Britain Island, Papua New Guinea, whose active cone Tavurvur ranks seventh globally for long-term mean SO2 and CO2 emissions. It is unknown why Rabaul is such a strong emitter of volcanic gases. Magma mixing between …

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Petrological insights into magma storage and evolution at Rabaul Caldera, Papua New Guinea

Melina Höhn, Margaret E. Hartley, John B Dikaung, Ima Itikarai et autres

Rabaul is a caldera volcano in Papua New Guinea. Its most recent caldera-forming eruption occurred ~1400 years ago, with numerous intra-caldera eruptions since. Erupted whole rock compositions are commonly attributed to fractional crystallisation along a single liquid line of descent, but mafic …

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Helium, carbon and nitrogen isotope evidence for slab influence on volcanic gas emissions at Rabaul caldera, Papua New Guinea

Brendan McCormick Kilbride, Peter H. Barry, Tobias P. Fischer, Greg Holland et autres

The chemical and isotopic composition of gases emitted by subduction zone volcanoes can provide insights into the origin of magmatic volatiles. In volcanic arcs, magmatic volatiles can be supplied from the mantle, the subducting slab, or the rocks of the arc crust. …

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Petrographic and Geochemical Evidence for a Complex Magmatic Plumbing System beneath Bagana Volcano, Papua New Guinea

Joshua Brown, Iris Buisman, Maria Paula Castellanos Melendez, John B Dikaung et autres

Abstract Bagana is a persistently active stratovolcano located on Bougainville Island, Papua New Guinea. Characteristic activity consists of prolonged lava effusion over months to years, with occasional shifts to explosive vulcanian or sub Plinian eruptions that threaten surrounding communities. Satellite observations have …

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Helium, carbon and nitrogen isotope evidence for slab influence on volcanic gas emissions at Rabaul caldera, Papua New Guinea

Brendan McCormick Kilbride, Peter James Barry, Tobias P. Fischer, Greg Holland et autres

The chemical and isotopic composition of the gases emitted by subduction zone volcanoes can provide insights into the origin of magmatic volatiles. In volcanic arcs, magmatic volatiles and therefore emitted gases can be supplied from the mantle, the subducting slab, or the …

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Petrographic and geochemical evidence for a complex magmatic plumbing system beneath Bagana volcano, Papua New Guinea

Joshua Brown, Iris Buisman, Marie Edmonds, Ben S. Ellis et autres

Bagana is a persistently active stratovolcano located on Bougainville Island, Papua New Guinea. Characteristic activity consists of prolonged lava effusion over months to years, with occasional shifts to explosive vulcanian or subplinian eruptions which threaten surrounding communities. Satellite observations have shown that …

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Temporal Variability in Gas Emissions at Bagana Volcano Revealed by Aerial, Ground, and Satellite Observations

Brendan McCormick Kilbride, Kieran T. Wood, Thomas Charles Wilkes, C. Ian Schipper et autres

Abstract Bagana is a remote, highly active volcano, located on Bougainville Island in southeastern Papua New Guinea. The volcano has exhibited sustained and prodigious sulfur dioxide gas emissions in recent decades, accompanied by frequent episodes of lava extrusion. The remote location of …

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Decrease in volcano jet noise peak frequency as crater expands

Kathleen F. McKee, Eveanjelene Snee, Sean W. Maher, Cassandra D. Smith et autres

Volcanic jet noise is the sound, often <20 Hz and termed infrasound, generated by momentum-driven fluid flow through a volcanic vent. Assuming the self-similarity of jet flows and audible jet noise extends to infrasonic volcanic jet noise, the Strouhal number, St, connects …

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Temporal Variability in Gas Emissions at Bagana Volcano Revealed by Aerial, Ground, and Satellite Observations

Brendan McCormick Kilbride, Emma J. Liu, Kieran T. Wood, Thomas Charles Wilkes et autres

Bagana is a remote, highly active volcano, located on Bougainville Island in southeastern Papua New Guinea. The volcano has exhibited sustained and prodigious sulfur dioxide gas emissions in recent decades, accompanied by frequent episodes of lava extrusion. The remote location of Bagana …

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Explosive-effusive-explosive: The role of magma ascent rates and paths in modulating caldera eruptions

Olivier Bernard, Weiran Li, Fidel Costa, Steve J. Saunders et autres

Abstract One of the biggest challenges in volcanology is assessing the role of magma properties (volatile budgets, storage depths, and ascent rates) in controlling eruption explosivity. We use a new approach based on apatite to estimate volatile contents and magma ascent rates …

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