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Table 1.   Model parameters values assumed in numerical simulations

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

Parameters and notations Parameter values
experiment 1 experiment 2 experiment 3
Lava density, \({{\rho }_{l}}\) 2350 kg m–3
Lava viscosity, \({{\eta }_{l}}\) 5.6 × 109 Pa s 5.6 × 109 Pa s 5.6 × 109 Pa s
Air density, \({{\rho }_{a}}\) 1 kg m–3
Air viscosity, \({{\eta }_{a}}\) 10–4 Pa s
Gravitational acceleration, g (0, 0, –9.81) m s–1 (–0.1, 0.2, –9.81) m s–1 (0, 0, –9.81) m s–1
Time scale, \(t^* = {{{{\eta }_{l}}} \mathord{\left/ {\vphantom {{{{\eta }_{l}}} {({{\rho }_{l}}gh)}}} \right. \kern-0em} {({{\rho }_{l}}gh)}}\) 243 s 243 s 2430 s
Length scale, h 1000 m
Velocity scale, \({h \mathord{\left/ {\vphantom {h {t{\text{*}}}}} \right. \kern-0em} {t{\text{*}}}}\) 4.115 m s–1 4.115 m s–1 0.4115 m s–1
Width of the model domain, l1 32 136 m
Length of the model domain, l2 36 939 m
Height of the model domain, l3 400 m
Grid \(174 \times 200 \times 70\) hexahedra with \({{h}_{1}} = 183.747\) m, \({{h}_{2}} = 183.767\) m, \({{h}_{3}} = 5.71\) m
Lava extrusion rate \({{{\mathbf{u}}}_{0}} = (0,0,2.65774 \times {{10}^{{ - 3}}}{\text{)}}\) m s–1
Model fissure shape Ellipse with semi-major axis of 2000 m, semi-minor axis 200 m, area 1.31691 × 106 m2