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9 Mar 2004: flow. Pyroclastic flows can be up toseveral thousands of cubic kilometres in volume, propagating for tens of kilometresfrom the vent of a volcano at speeds over 200 m s1 (Sparks et ... ume. Vmax30. 0t. (b). Vmax. 200 400 600 800 1000. 25.

9 Mar 2004: 1125WETTLAUFER ET AL.: SOLIDIFICATION OF LEADS. profile was taken after the buoy had reached the oceanic tem-perature, and each subsequent profile is separated by 200 min.A quantitative analysis of ... The initial profile was taken after the buoy had

9 Mar 2004: The simulations discussed here were obtained for a channel of length xw = 4,the typical grid had 160 horizontal and 200 stretched vertical intervals, and thetypical time step was 2 103.

9 Mar 2004: 25. 0 50 100 150 200 250. 50. 75. 100. 125.

9 Feb 2004: Quantitative modelling ofgranular suspension flows. By Herbert E. Huppert. Institute of Theoretical Geophysics, Department of AppliedMathematics and Theoretical Physics, University of Cambridge,. Silver Street, Cambridge CB3 9EW, UK. A broad review

10 Jun 2004: J. Fluid Mech. (2004), vol. 508, pp. 175–199. c 2004 Cambridge University PressDOI: 10.1017/S0022112004009036 Printed in the United Kingdom. 175. Axisymmetric collapses of granular columns. By GERT LUBE1, HERBERT E. HUPPERT2,R. STEPHEN J. SPARKS1

9 Mar 2004: 200 points and with a time stepof 5 103.

23 Aug 2004: As t 0 it can be seen that the solution diverges from the line of best fit., t = 103, y = 1/200; , t = 103, y = 1/400; , t = 104, y =

9 Feb 2004: In a typical numerical integration, we used 200 grid points, a time step of 5104and an initial time oft0 = 0.5.

9 Mar 2004: The majority of the calculations have used 200 uniformlyspaced grid points in each mushy layer, although we have checked convergenceusing 400 and 800 points. ... We note that a typical calculation with 200 grid points. 178 D.