<?xml version="1.0" encoding="UTF-8"?>

<rootTag>
  <Award>
    <AwardTitle>Three-Dimensional Modeling of Seafloor Geo-Acoustic Interaction</AwardTitle>
    <AwardEffectiveDate>06/15/2013</AwardEffectiveDate>
    <AwardExpirationDate>05/31/2016</AwardExpirationDate>
    <AwardAmount>190902</AwardAmount>
    <AwardInstrument>
      <Value>Standard Grant</Value>
    </AwardInstrument>
    <Organization>
      <Code>06040200</Code>
      <Directorate>
        <LongName>Directorate For Geosciences</LongName>
      </Directorate>
      <Division>
        <LongName>Division Of Ocean Sciences</LongName>
      </Division>
    </Organization>
    <ProgramOfficer>
      <SignBlockName>Candace O. Major</SignBlockName>
    </ProgramOfficer>
    <AbstractNarration>Updates to the SPECFEM3D wave propagation code will be developed so that it can handle fully elastic, 3-D behavior at and near the seafloor-ocean interface. The current version does not fully account for attenuation, which 2-D modeling has shown is a key factor in partitioning of compressional and shear energy at the solid-fluid interface and within porous shallow sediments that characterize most of the seafloor. Predictions from the updated code are to be benchmarked against a commonly used Parabolic Equation algorithm that is well suited for long-distance (far field) calculations, thus enabling study study of water-borne seismic phases all the way from source, through the near field, to far-range receivers. A dataset from the North Pacific will provide constraints for model parameter testing.</AbstractNarration>
    <MinAmdLetterDate>06/12/2013</MinAmdLetterDate>
    <MaxAmdLetterDate>09/19/2014</MaxAmdLetterDate>
    <ARRAAmount/>
    <AwardID>1260094</AwardID>
    <Investigator>
      <FirstName>Ralph</FirstName>
      <LastName>Stephen</LastName>
      <EmailAddress>rstephen@whoi.edu</EmailAddress>
      <StartDate>06/12/2013</StartDate>
      <EndDate/>
      <RoleCode>Principal Investigator</RoleCode>
    </Investigator>
    <Investigator>
      <FirstName>Ilya</FirstName>
      <LastName>Udovydchenkov</LastName>
      <EmailAddress>iudovydchenkov@whoi.edu</EmailAddress>
      <StartDate>06/12/2013</StartDate>
      <EndDate>09/19/2014</EndDate>
      <RoleCode>Former Co-Principal Investigator</RoleCode>
    </Investigator>
    <Institution>
      <Name>Woods Hole Oceanographic Institution</Name>
      <CityName>WOODS HOLE</CityName>
      <ZipCode>025431041</ZipCode>
      <PhoneNumber>5082893542</PhoneNumber>
      <StreetAddress>183 OYSTER POND ROAD</StreetAddress>
      <CountryName>United States</CountryName>
      <StateName>Massachusetts</StateName>
      <StateCode>MA</StateCode>
    </Institution>
    <ProgramElement>
      <Code>1620</Code>
      <Text>MARINE GEOLOGY AND GEOPHYSICS</Text>
    </ProgramElement>
    <ProgramReference>
      <Code>1620</Code>
      <Text>MARINE GEOLOGY AND GEOPHYSICS</Text>
    </ProgramReference>
  </Award>
</rootTag>
