Coupling of Hawaiian volcanoes only during overpressure condition

Manoochehr Shirzaei, Thomas R. Walter, Roland Bürgmann

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Mauna Loa and Kilauea volcanoes, Hawaii, are thought to be coupled by pore pressure diffusion through an asthenospheric melt layer. However, abundant observations of independent activity of these volcanoes suggest a more complicated relationship. Here we analyze surface deformation data, deep seismicity and gas measurements, to reveal strong coupling of these volcanoes between 2003 and 2008. In early 2005, we find a shift from anticorrelation to correlation of magma-chamber inflation. The shift is preceded by a seismic swarm in the mantle beneath Mauna Loa and accompanied by a large silent slip event beneath the south flank of Kilauea. This suggests that these volcanoes are coupled during mantle-driven surges and that the 2005 silent slip event was triggered by accelerated magma supply at Kilauea.

Original languageEnglish (US)
Pages (from-to)1994-1999
Number of pages6
JournalGeophysical Research Letters
Volume40
Issue number10
DOIs
StatePublished - May 28 2013

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Keywords

  • Hawaiâ€μi Island
  • InSAR time series
  • time-dependent modeling
  • volcano coupling

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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