<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Peter C. Trescott</dc:contributor>
  <dc:creator>S. P. Larson</dc:creator>
  <dc:date>1977</dc:date>
  <dc:description>&lt;p&gt;The use of the strongly implicit procedure (SIP) with an additional iteration parameter, &lt;i&gt;&lt;span&gt;β&lt;/span&gt;&lt;/i&gt;, to scale the residual vector is advantageous to the solution of some ground-waterflow problems. For steady-state water-table problems plagued by excessive elimination of grid blocks during the iteration process, selection of &lt;i&gt;&lt;span&gt;β&lt;/span&gt;&lt;/i&gt;&amp;lt;1 can be effective in limiting the deletion of blocks to a reasonable number. Also, a linear problem characterized by large anisotropy and layers of contrasting hydraulic conductivity was solved more efficiently with &lt;i&gt;&lt;span&gt;β&lt;/span&gt;&lt;/i&gt;=1.5. Effective values of &lt;i&gt;&lt;span&gt;β&lt;/span&gt;&lt;/i&gt; are generally in the range 0&amp;lt;&lt;i&gt;&lt;span&gt;β&lt;/span&gt;&lt;/i&gt;&amp;lt;2 and are easily determined by trial. Use of a &lt;i&gt;&lt;span&gt;β&lt;/span&gt;&lt;/i&gt; parameter in the SIP algorithm provides an effective solution technique for a class of ground-water-flow problems that previously was burdened by significant computational difficulty. &lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>Solution of water-table and anisotropic flow problems by using the strongly implicit procedure</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>