<?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>D. Perkins</dc:contributor>
  <dc:contributor>A. Frankel</dc:contributor>
  <dc:creator>S. Harmsen</dc:creator>
  <dc:date>1999</dc:date>
  <dc:description>&lt;p&gt;Probabilistic seismic hazard analysis&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="small-caps"&gt;(PSHA)&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;is a technique for estimating the annual rate of exceedance of a specified ground motion at a site due to known and suspected earthquake sources. The relative contributions of the various sources to the total seismic hazard are determined as a function of their occurrence rates and their ground-motion potential. The separation of the exceedance contributions into bins whose base dimensions are magnitude and distance is called&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;deaggregation&lt;/i&gt;. We have deaggregated the hazard analyses for the new USGS national probabilistic ground-motion hazard maps (Frankel&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;et al.&lt;/i&gt;, 1996). For points on a 0.2° grid in the central and eastern United States&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="small-caps"&gt;(CEUS)&lt;/span&gt;, we show color maps of the geographical variation of mean and modal magnitudes (&lt;i&gt;&lt;span class="overline"&gt;M&lt;/span&gt;, Mˇ&lt;/i&gt;) and distances (&lt;i&gt;&lt;span class="overline"&gt;D&lt;/span&gt;, Dˇ&lt;/i&gt;) for ground motions having a 2% chance of exceedance in 50 years. These maps are displayed for peak horizontal acceleration and for spectral response accelerations of 0.2, 0.3, and 1.0 sec. We tabulate&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="overline"&gt;M&lt;/span&gt;,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="overline"&gt;D&lt;/span&gt;, Mˇ&lt;/i&gt;, and&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Dˇ&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;for 49 CEUS cities for 0.2- and 1.0-sec response. Thus, these maps and tables are PSHA-derived estimates of the potential earthquakes that dominate seismic hazard at short and intermediate periods in the CEUS.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1785/BSSA0890010001</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Seismological Society of America</dc:publisher>
  <dc:title>Deaggregation of probabilistic ground motions in the central and eastern United States</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>