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dc.contributor.authorMontagna, C.P.
Gonnermann, H.M.
dc.date.accessioned 2016-01-28T17:15:40Z
dc.date.available 2016-01-28T17:15:40Z
dc.date.issued 2013
dc.identifier.citation Montagna, C.P. and Gonnermann, H.M.. "Magma flow between summit and Pu‘u ‘ Ō ‘ō at Kīlauea Volcano, Hawai‘i." Geochemistry, Geophysics, Geosystems, 14, no. 7 (2013) American Geophysical Union: 2232-2246. http://dx.doi.org/10.1002/ggge.20145.
dc.identifier.urihttps://hdl.handle.net/1911/88221
dc.description.abstract [1] Volcanic eruptions are often accompanied by spatiotemporal migration of ground deformation, a consequence of pressure changes within magma reservoirs and pathways. We modeled the propagation of pressure variations through the east rift zone (ERZ) of Kılauea Volcano, Hawai‘i, caused by magma withdrawal during the early eruptive episodes (1983–1985) of the ongoing Pu‘u ‘O‘ o-Kupaianaha eruption. Eruptive activity at the Pu‘u ‘O‘ o vent was typically accompanied by abrupt deflation that lasted for several hours and was followed by a sudden onset of gradual inflation once the eruptive episode had ended. Similar patterns of deflation and inflation were recorded at Kılauea’s summit, approximately 15 km to the northwest, albeit with time delays of hours. These delay times can be reproduced by modeling the spatiotemporal changes in magma pressure and flow rate within an elastic-walled dike that traverses Kılauea’s ERZ. Key parameters that affect the behavior of the magma-dike system are the dike dimensions, the elasticity of the wall rock, the magma viscosity, and to a lesser degree the magnitude and duration of the pressure variations themselves. Combinations of these parameters define a transport efficiency and a pressure diffusivity, which vary somewhat from episode to episode, resulting in variations in delay times. The observed variations in transport efficiency are most easily explained by small, localized changes to the geometry of the magma pathway.
dc.language.iso eng
dc.publisher American Geophysical Union
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.title Magma flow between summit and Pu‘u ‘ Ō ‘ō at Kīlauea Volcano, Hawai‘i
dc.type Journal article
dc.contributor.funder National Science Foundation
dc.citation.journalTitle Geochemistry, Geophysics, Geosystems
dc.contributor.org Keith-Wiess Geological Lab
dc.subject.keywordmagma flow
dikes
Kīlauea
elastic rock
magma-rock coupling
dc.citation.volumeNumber 14
dc.citation.issueNumber 7
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1002/ggge.20145
dc.identifier.grantID EAR 1145187 (National Science Foundation)
dc.type.publication publisher version
dc.citation.firstpage 2232
dc.citation.lastpage 2246


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