Delicate balance of magmatic-tectonic interaction at Kilauea Volcano, Hawai`i, revealed from slow slip events: Chapter 13

Geophysical Monograph - 13
By: , and 
Edited by: Rebecca CareyValérie CayolMichael P. Poland, and Dominique Weis

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Abstract

Eleven slow slip events (SSEs) have occurred on the southern flank of Kilauea Volcano, Hawai’i, since 1997 through 2014. We analyze this series of SSEs in the context of Kilauea’s magma system to assess whether or not there are interactions between these tectonic events and eruptive/intrusive activity. Over time, SSEs have increased in magnitude and become more regular, with interevent times averaging 2.44 ± 0.15 years since 2003. Two notable SSEs that impacted both the flank and the magmatic system occurred in 2007, when an intrusion and small eruption on the East Rift Zone were part of a feedback with a SSE and 2012, when slow slip induced 2.5 cm of East Rift Zone opening (but without any change in eruptive activity). A summit inflation event and surge in East Rift Zone lava effusion was associated with a SSE in 2005, but the inferred triggering relation is not clear due to a poorly constrained slip onset time. Our results demonstrate that slow slip along Kilauea’s décollement has the potential to trigger and be triggered by activity within the volcano’s magma system. Since only three of the SSEs have been associated with changes in magmatic activity within the summit and rift zones, both the décollement and magma system must be close to failure for triggering to occur.

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Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Delicate balance of magmatic-tectonic interaction at Kilauea Volcano, Hawai`i, revealed from slow slip events: Chapter 13
Series title Geophysical Monograph
Chapter 13
ISBN 978-1-118-87204-8
DOI 10.1002/9781118872079.ch13
Volume 208
Year Published 2015
Language English
Publisher American Geophysical Union; John Wiley & Sons
Publisher location Washington, D.C.
Contributing office(s) Volcano Science Center
Description 20 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Hawaiian volcanoes: From source to surface
First page 269
Last page 288
Conference Title AGU Chapman Conference
Conference Location Waikoloa, Hawai'i
Conference Date August 20-24, 2012
Country United States
State Hawaii
Other Geospatial Kilauea Volcano
Online Only (Y/N) N
Additional Online Files (Y/N) N