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Discovery of a Powerful, Transient, Explosive Thermal Event at Marduk Fluctus, Io, in Galileo NIMS Data

Davies, A. G. and Davies, R. L. and Veeder, G. J. and de Kleer, K. and de Pater, I. and Matson, D. L. and Johnson, T. V. and Wilson, L. (2018) Discovery of a Powerful, Transient, Explosive Thermal Event at Marduk Fluctus, Io, in Galileo NIMS Data. Geophysical Research Letters, 45 (7). pp. 2926-2933. ISSN 0094-8276. doi:10.1002/2018gl077477.

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Analysis of Galileo Near‐Infrared Mapping Spectrometer observations of Marduk Fluctus, a volcano on the Jovian moon Io, reveals a style of volcanic activity not previously seen there—a powerful thermal event lasting only a few minutes in 1996. The thermal emission rapidly fades, suggesting extremely rapid cooling of small clasts. The duration and evolution of the explosive eruption are akin to what might be expected from a strombolian or vulcanian explosion. The presence of such events provides an additional volcanic process that can be imaged by future missions with the intent of determining lava composition from eruption temperature, an important constraint on the internal composition of Io. These data promise to be of particular use in understanding the mechanics of explosive volcanic processes on Io.

Item Type:Article
Related URLs:
URLURL TypeDescription
Davies, A. G.0000-0003-1747-8142
Davies, R. L.0000-0002-3324-4824
de Kleer, K.0000-0002-9068-3428
de Pater, I.0000-0002-4278-3168
Wilson, L.0000-0003-3284-3515
Additional Information:© 2018. American Geophysical Union. Received 6 FEB 2018. Accepted 9 MAR 2018. Accepted article online 14 MAR 2018. Published online 6 APR 2018. This work was performed at the Jet Propulsion Laboratory‐California Institute of Technology, under contract to NASA. We thank A.S. McEwen and D.A. Williams for their reviews. A.G.D. thanks the NASA Outer Planets Research and Planetary Geology and Geophysics Programs for past support under awards NNN13D466T and NMO710830. The research was partially supported by the National Science Foundation, NSF grant AST‐1313485 to UC Berkeley. L.W. thanks the Leverhulme Trust for an Emeritus Fellowship. NIMS data are available from the NASA Planetary Data System. © Caltech 2018.
Group:Astronomy Department
Funding AgencyGrant Number
Leverhulme TrustUNSPECIFIED
Subject Keywords:Io; Volcanism; Remote sensing; Thermal emission; Infrared; Galilean satellites
Issue or Number:7
Record Number:CaltechAUTHORS:20190424-103159776
Persistent URL:
Official Citation:Davies, A. G., Davies, R. L., Veeder, G. J., Kleer, K., Pater, I., Matson, D. L., et al. ( 2018). Discovery of a powerful, transient, explosive thermal event at Marduk Fluctus, Io, in Galileo NIMS data. Geophysical Research Letters, 45, 2926– 2933.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94916
Deposited By: George Porter
Deposited On:24 Apr 2019 17:41
Last Modified:16 Nov 2021 17:08

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