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3D Numerical Modeling of the Summit Lake Lava Flow, Yellowstone, USA

Authors
  • Tsepelev, I. A.1
  • Ismail-Zadeh, A. T.2, 3
  • Melnik, O. E.2, 4
  • 1 Institute of Mathematics and Mechanics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620108, Russia , Yekaterinburg (Russia)
  • 2 Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences, Moscow, 117997, Russia , Moscow (Russia)
  • 3 Institute of Applied Geosciences, Karlsruhe Institute of Technology, Karlsruhe, 76131, Germany , Karlsruhe (Germany)
  • 4 Institute of Mechanics, Lomonosov Moscow State University, Moscow, 119192, Russia , Moscow (Russia)
Type
Published Article
Journal
Izvestiya, Physics of the Solid Earth
Publisher
Pleiades Publishing
Publication Date
Mar 01, 2021
Volume
57
Issue
2
Pages
257–265
Identifiers
DOI: 10.1134/S1069351321020129
Source
Springer Nature
Keywords
License
Yellow

Abstract

Abstract—Volcanic eruptions belong to the extreme events that change the Earth’s landscape and affect global climate and environment. Although special attention is given to super-eruptions, the non-explosive rhyolitic (highly viscous) eruptions and large lava flows are no less important. In this paper, we study an ancient lava flow with a volume of ~50 km3 in the Summit Lake region, ​​Yellowstone, which is one of the best studied large intraplate igneous provinces. We develop three-dimensional (3D) numerical models of isothermal lava flow to analyze the influence of the underlying surface and lava flow viscosity on the advancement and duration of the flow. The modeled dynamics of flow propagation fairly well agrees with the measured values provided that the average angle of inclination of the underlying surface slightly differs from the present-day value (by ~1.3°) presumably due to the pressure change in the magma chamber during the eruption. With the increase in lava viscosity, the flow slows down and its thickness increases leading to a change in the flow morphology.

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