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Numerical simulation of Rhone's glacier from 1874 to 2100

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Title: Numerical simulation of Rhone's glacier from 1874 to 2100
Authors: Jouvet, Guillaume Browse this author
Picasso, Marco Browse this author
Rappaz, Jacques Browse this author
Blatter, Heinz Browse this author
Huss, Matthias Browse this author
Funk, Martin Browse this author
Issue Date: Sep-2008
Publisher: [Department of Mathematics, Hokkaido University]
Citation: JST Presto Symposium on Mathematical Sciences towards Environmental Problems (Hokkaido University technical report series in mathematics ; 136). pp.1-9.
Abstract: The numerical simulation of the motion of Rhone's glacier in the Swiss Alps is performed from 1874 to 2007, and then from 2007 to 2100. Given the shape of the glacier, the velocity of ice u is obtained by solving a 3D nonlinear Stokes problem. Then, the shape of the glacier is updated by computing the volume fraction of ice ϕ, which satisfies the transport equation ∂ϕ/∂t +u · ∇ϕ = bδΓA. Here bδΓA is a source term acting only on the ice-air interface ΓA which accounts for the accumulation or ablation of ice due to snow falls or melting. A decoupling algorithm allows the two above problems to be solved using different numerical techniques. The nonlinear Stokes problem is solved on a fixed, unstructured finite element mesh made of tetrahedrons. The transport equation is solved using a fixed, structured grid made of smaller cells. The numerical simulation is performed between 1874 and 2007. Then, a median climatic scenario is considered in order to predict the shape of the glacier from 2007 until 2100.
Description: JSTさきがけ研究集会 環境問題における数理の可能性. 平成20年6月11日~平成20年6月13日. 札幌市
Conference Name: JSTさきがけ研究集会 環境問題における数理の可能性
Conference Place: 札幌
Type: proceedings
Appears in Collections:北海道大学サステナビリティ・ウィーク2008 (Sustainability Weeks 2008) > JSTさきがけ研究集会 環境問題における数理の可能性

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