Seismic evidence for a crustal magma reservoir beneath the upper east rift zone of Kilauea volcano, Hawaii

Guoqing Lin, Falk C Amelung, Yan Lavallée, Paul G. Okubo

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

An anomalous body with low Vp (compressional wave velocity), low Vs (shear wave velocity), high Vp/Vs anomalies is observed at 8-11 km depth beneath the upper east rift zone of Kilauea volcano in Hawaii by simultaneous inversion of seismic velocity structure earthquake locations. We interpret this body to be a crustal magma reservoir beneath the volcanic pile, similar to those widely recognized beneath mid-ocean ridge volcanoes. Combined seismic velocity petrophysical models suggest the presence of 10% melt in a cumulate magma mush. This reservoir could have supplied the magma that intruded into the deep section of the east rift zone caused its rapid expansion following the 1975 M7.2 Kalapana earthquake.

Original languageEnglish (US)
Pages (from-to)187-190
Number of pages4
JournalGeology
Volume42
Issue number3
DOIs
StatePublished - 2014

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rift zone
magma chamber
wave velocity
volcano
magma
earthquake
mid-ocean ridge
cumulate
seismic velocity
velocity structure
S-wave
pile
melt
anomaly
inversion

ASJC Scopus subject areas

  • Geology

Cite this

Seismic evidence for a crustal magma reservoir beneath the upper east rift zone of Kilauea volcano, Hawaii. / Lin, Guoqing; Amelung, Falk C; Lavallée, Yan; Okubo, Paul G.

In: Geology, Vol. 42, No. 3, 2014, p. 187-190.

Research output: Contribution to journalArticle

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