<?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>George Plafker</dc:contributor>
  <dc:contributor>Jerry L. Svarc</dc:contributor>
  <dc:contributor>Michael Lisowski</dc:contributor>
  <dc:creator>James C. Savage</dc:creator>
  <dc:date>2014</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Middleton Island, located at the seaward edge of the continental shelf 50 km from the base of the inner wall of the Aleutian Trench, affords an opportunity to make land-based measurements of uplift near the toe of the Prince William Sound megathrust, site of the 1964,&amp;nbsp;&lt;/span&gt;&lt;i&gt;M&lt;/i&gt;&lt;span&gt;&amp;thinsp;=&amp;thinsp;9.2, Alaska earthquake. Leveling surveys (1973&amp;ndash;1993) on Middleton Island indicate roughly uniform tilting (~1 &amp;micro;rad/a down to the northwest) of the island, and GPS surveys (1993&amp;ndash;2012) show an uplift rate of 14 mm/a of the island relative to fixed North America. The data are consistent with a combined (coseismic and postseismic) uplift (in meters) due to the 1964 earthquake as a function of time&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;&amp;tau;&lt;/i&gt;&lt;span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;(years after the earthquake)&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;u&lt;/i&gt;&lt;span&gt;(&lt;/span&gt;&lt;i&gt;&amp;tau;&lt;/i&gt;&lt;span&gt;)&amp;thinsp;=&amp;thinsp;(3.5&amp;thinsp;+&amp;thinsp;1.21 log&lt;/span&gt;&lt;sub&gt;10&lt;/sub&gt;&lt;span&gt;&amp;thinsp;[1&amp;thinsp;+&amp;thinsp;1.67&amp;thinsp;&lt;/span&gt;&lt;i&gt;&amp;tau;&lt;/i&gt;&lt;span&gt;])&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;H&lt;/i&gt;&lt;span&gt;(&lt;/span&gt;&lt;i&gt;&amp;tau;&lt;/i&gt;&lt;span&gt;) where 3.5 is the coseismic uplift and&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;H&lt;/i&gt;&lt;span&gt;(&lt;/span&gt;&lt;i&gt;&amp;tau;&lt;/i&gt;&lt;span&gt;) is 0 for&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;&amp;tau;&lt;/i&gt;&lt;span&gt;&amp;thinsp;&amp;lt;&amp;thinsp;0 and 1 otherwise. The current uplift on Middleton Island is attributed to continuous slip on a fault splaying off from the megathrust, and the long-term uplift is the superposition of the effects of past earthquakes, each earthquake being similar to the 1964 event. Then, the predicted uplift at time&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;t&lt;/i&gt;&lt;span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;due to a sequence of earthquakes at times&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;t&lt;sub&gt;i&lt;/sub&gt;&lt;/i&gt;&lt;span&gt;would be&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;img src="http://onlinelibrary.wiley.com/store/10.1002/2014JB011127/asset/equation/jgrb50748-math-0001.gif?v=1&amp;amp;t=i3udhdfj&amp;amp;s=045302a578ea3538d8fd66696ab3201077da5a74" alt="inline image" /&gt;&lt;span&gt;. From studies of strandlines associated with the uplifted terraces on Middleton Island, Plafker et al. (1992) estimated the occurrence times of the last six earthquakes and measured the present-day elevations of those strandlines. The predicted uplift is in rough agreement with those measurements. About half of the predicted uplift is due to postseismic relaxation from previous earthquakes.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1002/2014JB011127</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Americal Geophysical Union</dc:publisher>
  <dc:title>Continuous uplift near the seaward edge of the Prince William Sound megathrust: Middleton Island, Alaska</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>