Report

High Magma Storage Rates Before the 1983 Eruption of Kilauea, Hawaii

Science  30 Jun 2000:
Vol. 288, Issue 5475, pp. 2343-2346
DOI: 10.1126/science.288.5475.2343

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Abstract

After a magnitude 7.2 earthquake in 1975 and before the start of the ongoing eruption in 1983, deformation of Kilauea volcano was the most rapid ever recorded. Three-dimensional numerical modeling shows that this deformation is consistent with the dilation of a dike within Kilauea's rift zones coupled with creep over a narrow area of a low-angle fault beneath the south flank. Magma supply is estimated to be 0.18 cubic kilometers per year, twice that of previous estimates. The 1983 eruption may be a direct consequence of the high rates of magma storage within the rift zone that followed the 1975 earthquake.

  • * Present address: Laboratoire Magmas et Volcans–UMR 6524, 5 rue Kessler, 63000 Clermont-Ferrand, France.

  • To whom correspondence should be addressed. E-mail: cayol{at}opgc.univ-bpclermont.fr

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