<?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:creator>C. Willis</dc:creator>
  <dc:date>1986</dc:date>
  <dc:description>&lt;p&gt;&lt;span class="EXLDetailsDisplayVal"&gt;The author presents a numerical &lt;span class="searchword"&gt;method&lt;/span&gt; for calculating the density and S-wave velocity in the upper mantle of a spherically symmetric, non-rotating Earth which consists of a perfect elastic, isotropic material. The &lt;span class="searchword"&gt;data&lt;/span&gt; comes from the periods of the &lt;span class="searchword"&gt;toroidal&lt;/span&gt; oscillations. She tests the &lt;span class="searchword"&gt;method&lt;/span&gt; on a smoothed version of model A. The error in the reconstruction is less than &lt;span class="searchword"&gt;1&lt;/span&gt;%. The effects of perturbations in the eigenvalues are studied and she finds that the final model is sensitive to errors in the &lt;span class="searchword"&gt;data&lt;/span&gt;.&lt;/span&gt; &lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1088/0266-5611/2/1/009</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>IOPscience</dc:publisher>
  <dc:title>An inverse method using toroidal mode data</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>