Improved Helioseismic data analysis and inversion for Solar Structure and Excitation Processes
{'Code': '06020203', 'Directorate': {'LongName': 'Directorate For Geosciences'}, 'Division': {'LongName': 'Div Atmospheric & Geospace Sciences'}}
{'SignBlockName': 'Sherry O. Farwell'}
This grant will support a two year theoretical and                         observational study of solar oscillations.  The motivation for                  these studies is to bring geophysical data analysis techniques,                 which have been developed for application to terrestrial free                   oscillation data over the last two decades, to bear on similar                  problems in the analysis of helioseismic data.  The focus will                  be on four areas which have terrestrial counterparts.  These are:               (1) The development of data analysis techniques to produce more                 accurate oscillation frequency and amplitude measurements; (2)                  The use of these frequencies to invert for the spherical                        structure of the Sun; (3) The derivation of the general matrix                  elements for the major solar asphericities and their use,                       together with the frequency estimates, to invert for estimates of               these asphericities; and (4) The development of techniques by                   which constraints can be placed on the excitation of solar                      oscillations.  All aspects of the research will be characterized                by a close cooperation between M.I.T. and Harvard.                                   This work represents an important step in transferring                     terrestrial techniques in seismology to the new field of                        helioseismology. The solar importance lies in furthering our                    understanding of the solar dynamo and the 11 year variation.                    Hence, it is important to S/T research.
{'FirstName': 'Thomas', 'LastName': 'Jordan', 'EmailAddress': 'tjordan@usc.edu', 'StartDate': '09/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Massachusetts Institute of Technology', 'CityName': 'Cambridge', 'ZipCode': '021394301', 'PhoneNumber': '6172531000', 'StreetAddress': '77 MASSACHUSETTS AVE', 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA'}
[{'Code': '1523', 'Text': 'SOLAR-TERRESTRIAL'}, {'Code': '5750', 'Text': 'MAGNETOSPHERIC PHYSICS'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8805546.xml'}