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

Geology
By: , and 

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Abstract

An anomalous body with low Vp (compressional wave velocity), low Vs (shear wave velocity), and 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 and 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 and 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 and caused its rapid expansion following the 1975 M7.2 Kalapana earthquake.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Seismic evidence for a crustal magma reservoir beneath the upper east rift zone of Kilauea volcano, Hawaii
Series title Geology
DOI 10.1130/G35001.1
Volume 42
Issue 3
Year Published 2014
Language English
Publisher Geological Society of America
Contributing office(s) Volcano Hazards Program, Volcano Science Center
Description 4 p.
First page 187
Last page 190
Country United States
State Hawaii
Other Geospatial Kilauea volcano
Online Only (Y/N) N
Additional Online Files (Y/N) N