Three Dimensional Models of Flow and Deformation in         Subduction Zones
{'Code': '06030204', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'Michael A. Mayhew', 'PO_EMAI': None, 'PO_PHON': None}
The PI will construct detailed three dimensional models of              flow in subduction zone for comparison with seismic determi-                    nations of the flow, deformation and stress in subducted litho-                 spheric slabs.  Adequate resolution will be obtained by solving                 for 3D flow in a limited region around the subduction zone (a                   few thousand kilometers) and superposing this small scale                       solution on the large scale flow resulting from global plate                    motions and large scale convection.  Flow driven by tomograph-                  ically inferred density anomalies will be included.  The analysis               of the models will trace the flow of subducted material, deter-                 mine stress and deformation associated with deeep seismicity,                   and constrain mantle viscosity and structure.  The models will                  allow a quantitative understanding of the dynamics and mechanics                of subduction processes.
{'FirstName': 'Richard', 'LastName': "O'Connell", 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': "Richard J O'Connell", 'EmailAddress': 'oconnell@geophysics.harvard.edu', 'NSF_ID': '000411019', 'StartDate': '07/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Harvard University', 'CityName': 'CAMBRIDGE', 'ZipCode': '021385366', 'PhoneNumber': '6174955501', 'StreetAddress': '1033 MASSACHUSETTS AVE STE 3', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '05', 'CONGRESS_DISTRICT_ORG': 'MA05', 'ORG_UEI_NUM': 'LN53LCFJFL45', 'ORG_LGL_BUS_NAME': 'PRESIDENT AND FELLOWS OF HARVARD COLLEGE', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1574', 'Text': 'Geophysics'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8708477.xml'}