Evidence for gas and magmatic sources beneath the Yellowstone volcanic field from seismic tomographic imaging

Husen, Stephan; Smith, Robert B.; Waite, G. P.

doi:10.1016/s0377-0273(03)00416-5

Cited by 182 publications

(198 citation statements)

References 39 publications

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“…Low-velocity anomalies interpreted as partially molten volumes have been found at Toba Caldera [Masturyono et al, 2001], Yellowstone [Husen et al, 2004], and Rabaul [Finlayson et al, 2003]. Lowvelocity regions have also been associated with geothermal systems (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…In spite of that, in volcanic environments high Vp/Vs values at shallow depths can be generally associated with saturated highly fractured materials (as in Vesuvio [Scarpa et al, 2002] and Kilauea [Hansen et al, 2004]). Deep, high Vp/Vs values are rather related to bodies of partial melt (as in Etna [Patané et al, 2006], Yellowstone [Husen et al, 2004] and Long Valley [Sanders et al, 1995]). Low ratios can be also found in geothermal systems near the water-steam transition as in Yellowstone [Chatterjee et al, 1985] and Onikobe volcanic area [Nakajima and Hasegawa, 2003].…”

Section: Discussionmentioning

confidence: 99%

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Seismic tomography of Central São Miguel, Azores

Zandomeneghi

Almendros

Ibáñez

et al. 2008

Physics of the Earth and Planetary Interiors

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Seismic tomography of Central São Miguel, Azores

Zandomeneghi

Almendros

Ibáñez

et al. 2008

Physics of the Earth and Planetary Interiors

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“…There are also low-V and low-Vp/Vs areas in the upper crust. A possible cause of the low Vp/Vs in the upper crust is the presence of H 2 O/CO 2 vapor released from cooled and solidified magma (Ito et al 1979;Julian et al 1998;Takei 2002;Husen et al 2004;Nakamichi et al 2007). Another reason could be the presence of water in the pores with small aspect ratio under equilibrium conditions (Watson and Brenan 1987;Takei 2002).…”

Section: Discussionmentioning

confidence: 99%

Seismic velocity structure in and around the Naruko volcano, NE Japan, and its implications for volcanic and seismic activities

Okada

Matsuzawa

Nakajima

et al. 2014

Earth, Planets and Space

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Geofluids is important for understanding volcanic and earthquake generation processes. In this study, we obtained a detailed seismic velocity structure in and around the Naruko volcano, northeastern Japan, using data from a dense seismic observation network. We found a distinct seismic low-velocity zone (LVZ) beneath the Naruko volcano, with a diameter of nearly 10 to 20 km in the lower crust. This LVZ could correspond to a magma chamber. We also found a seismic low-velocity zone beneath the aftershock region of the 2008 Iwate-Miyagi Nairiku earthquake. This LVZ could correspond to an area with overpressurized fluid, which promoted the occurrence of the 2008 Iwate-Miyagi Nairiku earthquake.

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“…This builds on previous tomography studies carried out at Hengill volcano (e.g., Toomey and Foulger, 1989) that revealed the main structural features of the volcanic area and the triple junction. In particular, the V P /V S ratio and attenuation measurements are diagnostic of pore-fluid and temperature conditions when used in conjunction with V P (Evans et al, 1994;Gunasekera et al, 2003;Husen et al, 2004).…”

Section: Introductionmentioning

confidence: 99%