High magma storage rates before the 1983 eruption of Kilauea, Hawaii
Cayol V, Dieterich JH, Okamura A, Miklius A. 2000. High magma storage rates before the 1983 eruption of Kilauea, Hawaii. Science. 288(5475):2343-2346
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.
- Type
- Journal Article
- Authors
- Cayol, Valerie; Dieterich, James; Okamura, Arnold; Miklius, Asta
- Units
- HAVO
- Keywords
- Dilation, Geodesy, Global Positioning System (GPS), Hawaii (Big Island), Kilauea South Flank, Kilauea Volcano, Magma Supply Rate, Mechanism, Modeling, rift, Seismology, Spreading, Tectonics