Influence of volcanic activity at Mauna Loa, Hawaii, on earthquake occurrence in the Kaoiki Seismic Zone

Thomas R. Walter, Falk C Amelung

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The Kaoiki Seismic Zone at Mauna Loa's east flank is the locus of some of the largest earthquakes on Hawaii. In this paper we examine the link of those earthquakes to volcanic activity at Mauna Loa. We calculate the changes of Coulomb failure stress along the Kaoiki faults for typical volcanic events at Mauna Loa volcano. We simulate the dislocation associated with the 1950 eruption at the Southwest Rift Zone, the 1984 eruption at the Northeast Rift Zone, and the subsequent replenishment of the shallow magma chamber. Our model calculations suggest that the earthquake occurrence in the Kaoiki Seismic Zone strongly depends on the type of volcanic activity. Kaoiki earthquakes are encouraged by dike intrusions into the Southwest Rift Zone of Mauna Loa, but discouraged by dike intrusion into the Northeast Rift Zone. Inflation of a shallow magma chamber may again encourage earthquakes.

Original languageEnglish (US)
JournalGeophysical Research Letters
Volume31
Issue number7
DOIs
StatePublished - Apr 16 2004

Fingerprint

seismic zone
volcanology
rift zone
earthquakes
occurrences
earthquake
rock intrusions
intrusion
magma chamber
volcanic eruptions
magma
dike
volcanic eruption
chambers
replenishment
loci
inflation
dislocation
volcanoes
volcano

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Influence of volcanic activity at Mauna Loa, Hawaii, on earthquake occurrence in the Kaoiki Seismic Zone. / Walter, Thomas R.; Amelung, Falk C.

In: Geophysical Research Letters, Vol. 31, No. 7, 16.04.2004.

Research output: Contribution to journalArticle

@article{1fbbc79102b4472e91f7e08a8e99418e,
title = "Influence of volcanic activity at Mauna Loa, Hawaii, on earthquake occurrence in the Kaoiki Seismic Zone",
abstract = "The Kaoiki Seismic Zone at Mauna Loa's east flank is the locus of some of the largest earthquakes on Hawaii. In this paper we examine the link of those earthquakes to volcanic activity at Mauna Loa. We calculate the changes of Coulomb failure stress along the Kaoiki faults for typical volcanic events at Mauna Loa volcano. We simulate the dislocation associated with the 1950 eruption at the Southwest Rift Zone, the 1984 eruption at the Northeast Rift Zone, and the subsequent replenishment of the shallow magma chamber. Our model calculations suggest that the earthquake occurrence in the Kaoiki Seismic Zone strongly depends on the type of volcanic activity. Kaoiki earthquakes are encouraged by dike intrusions into the Southwest Rift Zone of Mauna Loa, but discouraged by dike intrusion into the Northeast Rift Zone. Inflation of a shallow magma chamber may again encourage earthquakes.",
author = "Walter, {Thomas R.} and Amelung, {Falk C}",
year = "2004",
month = "4",
day = "16",
doi = "10.1029/2003GL019131",
language = "English (US)",
volume = "31",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "7",

}

TY - JOUR

T1 - Influence of volcanic activity at Mauna Loa, Hawaii, on earthquake occurrence in the Kaoiki Seismic Zone

AU - Walter, Thomas R.

AU - Amelung, Falk C

PY - 2004/4/16

Y1 - 2004/4/16

N2 - The Kaoiki Seismic Zone at Mauna Loa's east flank is the locus of some of the largest earthquakes on Hawaii. In this paper we examine the link of those earthquakes to volcanic activity at Mauna Loa. We calculate the changes of Coulomb failure stress along the Kaoiki faults for typical volcanic events at Mauna Loa volcano. We simulate the dislocation associated with the 1950 eruption at the Southwest Rift Zone, the 1984 eruption at the Northeast Rift Zone, and the subsequent replenishment of the shallow magma chamber. Our model calculations suggest that the earthquake occurrence in the Kaoiki Seismic Zone strongly depends on the type of volcanic activity. Kaoiki earthquakes are encouraged by dike intrusions into the Southwest Rift Zone of Mauna Loa, but discouraged by dike intrusion into the Northeast Rift Zone. Inflation of a shallow magma chamber may again encourage earthquakes.

AB - The Kaoiki Seismic Zone at Mauna Loa's east flank is the locus of some of the largest earthquakes on Hawaii. In this paper we examine the link of those earthquakes to volcanic activity at Mauna Loa. We calculate the changes of Coulomb failure stress along the Kaoiki faults for typical volcanic events at Mauna Loa volcano. We simulate the dislocation associated with the 1950 eruption at the Southwest Rift Zone, the 1984 eruption at the Northeast Rift Zone, and the subsequent replenishment of the shallow magma chamber. Our model calculations suggest that the earthquake occurrence in the Kaoiki Seismic Zone strongly depends on the type of volcanic activity. Kaoiki earthquakes are encouraged by dike intrusions into the Southwest Rift Zone of Mauna Loa, but discouraged by dike intrusion into the Northeast Rift Zone. Inflation of a shallow magma chamber may again encourage earthquakes.

UR - http://www.scopus.com/inward/record.url?scp=3042818147&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3042818147&partnerID=8YFLogxK

U2 - 10.1029/2003GL019131

DO - 10.1029/2003GL019131

M3 - Article

AN - SCOPUS:3042818147

VL - 31

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 7

ER -