Earthquake–Volcano Interactions

Hill, David P.; Pollitz, Fred F.; Newhall, Christopher G.

doi:10.1063/1.1535006

Cited by 323 publications

(297 citation statements)

References 21 publications

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“…1 include only eruptions triggered within days (e.g., Linde & Sacks 1998). We do not include delayed triggered eruptions (e.g., Hill et al 2002;Marzocchi 2002;Walter & Amelung 2007) as these are less straightforward to establish as triggered events (Eggert & Walter 2009). The mechanism(s) responsible for magmatic eruption are more difficult to identify than the mechanisms for mud volcano eruption as there are a greater number of thermal and mechanical processes that operate in magmatic volcanoes.…”

Section: Changes In Permeabilitymentioning

confidence: 99%

Hydrologic Responses to Earthquakes and a General Metric

Wang¹,

Manga²

2010

Frontiers in Geofluids

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Hydrologic responses to earthquakes, including liquefaction, changes in stream and spring discharge, changes in the properties of groundwater such as geochemistry, temperature and turbidity, changes in the water level in wells, and the eruption of mud volcanoes, have been documented for thousands of years. Except for some water-level changes in the near field which can be explained by poroelastic responses to static stress changes, most hydrologic responses, both within and beyond the near field, can only be explained by the dynamic responses associated with seismic waves. For these responses, the seismic energy density e may be used as a general metric to relate and compare the various hydrologic responses. We show that liquefaction, eruption of mud volcanoes and increases in streamflow are bounded by e $ 10 )1 J m )3 ; temperature changes in hot springs are bounded by e $ 10 )2 J m )3 ; most sustained groundwater changes are bounded by e $ 10 )3 J m )3 ; geysers and triggered seismicity may respond to seismic energy density as small as 10 )3 and 10 )4 J m )3 , respectively. Comparing the threshold energy densities with published laboratory measurements, we show that undrained consolidation induced by dynamic stresses can explain liquefaction only in the near field, but not beyond the near field. We propose that in the intermediate field and far field, most responses are triggered by changes in permeability that in turn are a response to the cyclic deformation and oscillatory fluid flow. Published laboratory measurements confirm that changes in flow and time-varying stresses can change permeability, inducing both increases and decreases. Field measurements in wells also indicate that permeability can be changed by earthquakes in the intermediate field and far field. Further work, in particular field monitoring and measurements, are needed to assess the generality of permeability changes in explaining far-field hydrologic responses to earthquakes.

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Section: Changes In Permeabilitymentioning

confidence: 99%

Hydrologic Responses to Earthquakes and a General Metric

Wang¹,

Manga²

2010

Frontiers in Geofluids

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“…Hawaii is one of the most seismically active regions in the world and has been serving as a natural laboratory for studying the interactions between seismic and magmatic processes for the past few decades [e.g., Swanson et al, 1976;Lipman et al, 1985;Hill and Zucca, 1987;Rubin et al, 1998;Cayol et al, 2000;Hill et al, 2002;Amelung et al, 2007;Brooks et al, 2008]. The U.S. Geological Survey Hawaiian Volcano Observatory (HVO) operates an extensive seismic network (pink triangles in Figure 1) to measure and study the ongoing activity on the Island of Hawaii.…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional seismic velocity structure of Mauna Loa and Kilauea volcanoes in Hawaii from local seismic tomography

et al. 2014

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We present a new three‐dimensional seismic velocity model of the crustal and upper mantle structure for Mauna Loa and Kilauea volcanoes in Hawaii. Our model is derived from the first‐arrival times of the compressional and shear waves from about 53,000 events on and near the Island of Hawaii between 1992 and 2009 recorded by the Hawaiian Volcano Observatory stations. The Vp model generally agrees with previous studies, showing high‐velocity anomalies near the calderas and rift zones and low‐velocity anomalies in the fault systems. The most significant difference from previous models is in Vp/Vs structure. The high‐Vp and high‐Vp/Vs anomalies below Mauna Loa caldera are interpreted as mafic magmatic cumulates. The observed low‐Vp and high‐Vp/Vs bodies in the Kaoiki seismic zone between 5 and 15 km depth are attributed to the underlying volcaniclastic sediments. The high‐Vp and moderate‐ to low‐Vp/Vs anomalies beneath Kilauea caldera can be explained by a combination of different mafic compositions, likely to be olivine‐rich gabbro and dunite. The systematically low‐Vp and low‐Vp/Vs bodies in the southeast flank of Kilauea may be caused by the presence of volatiles. Another difference between this study and previous ones is the improved Vp model resolution in deeper layers, owing to the inclusion of events with large epicentral distances. The new velocity model is used to relocate the seismicity of Mauna Loa and Kilauea for improved absolute locations and ultimately to develop a high‐precision earthquake catalog using waveform cross‐correlation data.

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“…Similar effects could be induced by distant large earthquakes which are thought to be able to trigger subsequent -or influence the course of ongoing-volcanic eruptions even over long distance [Hill et al, 2002]. We thus encourage the development of a programme of continuous gravity monitoring of active volcanoes on a global scale, to be performed in conjunction with other techniques (ground deformation, gas monitoring, etc.)…”

Section: Conclusive Issuesmentioning

confidence: 99%

“…Many authors considered the possibility that earthquakes can trigger volcanic eruptions through changes in the physical properties of a magma chamber vibrated by seismic waves [e.g., Hill et al, 2002;Manga and Brodsky, 2006]. We discuss whether some of the mechanisms they proposed could induce mass/density changes of the vibrated magma body, in turn observed as gravity changes at the surface.…”

Section: Possible Triggering Mechanismsmentioning

confidence: 99%

“…A mass of crystals loosely held together may accumulate below the roof or at the sides of a crystallizing magma body and could be dislodged by passing seismic waves, if the dynamic strains break the crystal-to-crystal bonds [Hill et al, 2002;Manga and Brodsky, 2006]. The sinking crystal plumes could induce local gravity changes through the density contrast with the surrounding melt.…”

Section: Crystalsmentioning

confidence: 99%

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Gravity “steps” at Mt. Etna volcano (Italy): Instrumental effects or evidences of earthquake‐triggered magma density changes?

Carbone

Jousset

Musumeci

2009

Geophysical Research Letters

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On two occasions, sudden gravity changes occurred simultaneously at two summit Etna's stations, during local low‐magnitude earthquakes. A systematic coupling between earthquakes inducing comparable maximum acceleration and displacement at the observation points and gravity steps is missing, implying (1) the non‐instrumental nature of the steps and (2) the need for particular underlying conditions for the triggering mechanism(s) to activate. We review some of the volcanological processes that could induce fast underground mass redistributions, resulting in gravity changes at the surface. These processes involve bubbles and crystals present in the magma and require particular conditions in order to be effective as mass‐redistributing processes. The gravity steps could be a geophysical evidence of the dynamical stress transfer between tectonic and magmatic systems at a local scale. Given the implications that these transfers may have on the volcanic activity, routine volcano monitoring should include the observation of fast gravity changes.

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Earthquake–Volcano Interactions

Abstract: New measurements, statistical analyses, and models support the conjecture that a large earthquake can trigger subsequent volcanic eruptions over surprisingly long distance and time scales.

Cited by 323 publications

References 21 publications

Hydrologic Responses to Earthquakes and a General Metric

Hydrologic Responses to Earthquakes and a General Metric

Three‐dimensional seismic velocity structure of Mauna Loa and Kilauea volcanoes in Hawaii from local seismic tomography

Gravity “steps” at Mt. Etna volcano (Italy): Instrumental effects or evidences of earthquake‐triggered magma density changes?

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