%-------------------------------------------------------------------------------
% UF Sparse Matrix Collection, Tim Davis
% http://www.cise.ufl.edu/research/sparse/matrices/Janna/Geo_1438
% name: Janna/Geo_1438
% [geomechanical model of earth crust with underground deformation]
% id: 2545
% date: 2011
% author: C. Janna, M. Ferronato
% ed: T. Davis
% fields: name title A id date author ed kind Zeros notes
% kind: structural problem
%-------------------------------------------------------------------------------
% notes:
% Authors: Carlo Janna and Massimiliano Ferronato                 
%                                                                 
% Symmetric Positive Definite Matrix                              
% # equations:   1437960                                          
% # non-zeroes: 63156690                                          
% Problem description: Geomechanical problem                      
%                                                                 
% The matrix Geo_1438 is obtained from a geomechanical problem    
% discretizing a region of the earth crust subject to underground 
% deformation. The computational domain is a box with an areal    
% extent of 50 x 50 km and 10 km deep consisting of regularly     
% shaped tetrahedral Finite Elements.  The problem arises from a  
% 3D discretization with three displacement unknowns associated to
% each node of the grid.  This matrix has been used as a test case
% in the following paper:                                         
%                                                                 
% 1) C. Janna, M. Ferronato, G. Gambolati. "A Block FSAI-ILU      
% parallel preconditioner for symmetric positive definite linear  
% systems". SIAM Journal on Scientific Computing, 32, pp.         
% 2468-2484, 2010.                                                
%-------------------------------------------------------------------------------
