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Earth Institute Research Projects

Collaborative Research: Hawaiian and Subplinian Basaltic Volcanism: Constrains on Eruption Dynamics from Kilauea

Lead PI: Terry A. Plank , David Ferguson

Unit Affiliation: Geochemistry, Lamont-Doherty Earth Observatory (LDEO)

January 2012 - December 2013
Inactive
Pacific Ocean ; Lamont Doherty Earth Observatory (LDEO) ; Kilauea Volcano, HI
Project Type: Research

DESCRIPTION: The project will quantify the sizes and number densities of bubbles and microlites in pyroclasts; measure volatile concentrations in melt inclusions and groundmass glass to infer initial volatile content and degassing trends; estimate likely durations of magma ascent via volatile diffusion through embayments and crystals; construct numerical models of eruptive magma ascent, integrated with modeling of diffusive bubble growth to compare to observed bubble size distributions and degassing trends.

OUTCOMES: One journal publication has been published demonstrating previous explosive eruptions on Hawaii were fueled by a rapid decompression event and not higher gas content

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$124,448

EXTERNAL COLLABORATORS:

American Museum of Natural History, Hawaii Volcano Observatory

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1145177&HistoricalAwards=false

PUBLICATIONS:

Ferguson, D.J., ., Gonnermann, H.M., Ruprecht, P., Plank, T., Hauri, E.H., Houghton, B.F. and Swanson, D.A. (2016) Magma decompression rates during explosive eruptions of Kilauea volcano, Hawaii, Bulletin of Volcanology, 78 (10), 712016.

KEYWORDS

seismology geology and tectonics basaltic magma bubble size pyroclasts magma ascent degassing trends seismology

THEMES

Restless earth