Theoretical and Observational Study of Body and Surface     Waves
{'Code': '06030204', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'James H. Whitcomb', 'PO_EMAI': None, 'PO_PHON': None}
This proposal requests support to continue the principal                   investigator's study of Earth's interior structure using body and               surface waves.  In order to analyze seismic waveforms between the               period range of 10 and 50 sec., we propose to develop a                         perturbative propagator approach.  This method is potentially more              efficient, at least within this period range, than the normal mode              approach that has been successful and widely used for longer                    period (> 50 sec.) waves.  We will apply the method to study the                Earth structure on the global, regional and local scale problems                in order to sharpen the image and increase our understanding of                 seismic velocity structure.
{'FirstName': 'Toshiro', 'LastName': 'Tanimoto', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Toshiro Tanimoto', 'EmailAddress': 'toshiro@geol.ucsb.edu', 'NSF_ID': '000454798', 'StartDate': '06/15/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'California Institute of Technology', 'CityName': 'PASADENA', 'ZipCode': '911250001', 'PhoneNumber': '6263956219', 'StreetAddress': '1200 E CALIFORNIA BLVD', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'California', 'StateCode': 'CA', 'CONGRESSDISTRICT': '28', 'CONGRESS_DISTRICT_ORG': 'CA28', 'ORG_UEI_NUM': 'U2JMKHNS5TG4', 'ORG_LGL_BUS_NAME': 'CALIFORNIA INSTITUTE OF TECHNOLOGY', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '157400', 'Text': 'Geophysics'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8803603.xml'}