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Solid Earth
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Articles | Volume 12, issue 7
Articles | Volume 12, issue 7
https://doi.org/10.5194/se-12-1549-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-12-1549-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 7
Research article
 | 
06 Jul 2021
Research article |  | 06 Jul 2021

Magma ascent mechanisms in the transition regime from solitary porosity waves to diapirism

Janik Dohmen and Harro Schmeling

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Cited articles

Aharonov, E., Whitehead, J., Kelemen, P. B., and Spiegelman, M.: Channeling instability of upwelling melt in the mantle, J. Geophys. Res., 100, 20433–20450, 1995. 
Barcilon, V. and Lovera, O. M.: Solitary waves in magma dynamics, J. Fluid Mech., 204, 121–133, https://doi.org/10.1017/S0022112089001680, 1989. 
Bittner, D. and Schmeling, H.: Numerical modelling of melting processes and induced diapirism in the lower crust, Geophys. J. Int., 123, 59–70, 1995. 
Collins, W. J.: Polydiapirism of the Archean Mount Edgar Batholith, Pilbara Block, Western Australia, Precambrian Res., 43, 41–62, 1989. 
Connolly, J. A. D.: Devolatilization-generated fluid pressure and deformation-propagated fluid flow during prograde regional metamorphism, J. Geophys. Res.-Sol. Ea., 102, 18149–18173, 1997. 
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In partially molten regions within the Earth, the melt is able to move separately from the surrounding rocks. This allows for the emergence of so-called solitary porosity waves, driven by compaction and decompaction due to the melt with higher buoyancy. Our numerical models can predict whether a partially molten region will ascend dominated by solitary waves or diapirism. Even in diapiris-dominated regions, solitary waves will build up and ascend as a swarm when the ascend time is long enough.
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