Origins of Carbon Isotope Signals in Tropical and Polar     Oceans:  0-25,000 Years B.P.
{'Code': '06040200', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'OCE', 'LongName': 'Division Of Ocean Sciences'}}
{'SignBlockName': 'Bilal U. Haq', 'PO_EMAI': None, 'PO_PHON': None}
The carbon-isotopic signal of the Southern Ocean surface waters                 near the polar front is enriched in delta C-13 by 1.0 per mil.                  However, downcore the planktonic forams in the polar front                      region show a greater variation in C-13 because of the                          migrations of the front through time, linked to changes in                      carbon-isotopic composition of the Antarctic Intermediate Water                 (AAIW). In the tropics the delta C-13 signal is small and its                   origin is debated. The objective of the proposed research is to                 isolate global, transient, thermodynamic, and "Redfield"                        changes in the tropical and polar surface water isotopic                        records.                                                                                                                                                        Funds are provided for a two years' stable-isotopic study of                    cores from the topical to polar waters spanning the past 250                    k.yrs. to decipher the origin of the carbon-isotopic signal.                    The study will help resolve the changes in the position and                     intensity of the polar front. The analyses of Cd/Ca ratios of                   forams Cibicides sp. along with their carbon-isotopic analyses                  may help determine if the decoupling of the two systems can be                  used to identify the presence of AAIW.
{'FirstName': 'Richard', 'LastName': 'Fairbanks', 'PI_MID_INIT': 'G', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Richard G Fairbanks', 'EmailAddress': 'fairbanks@LDEO.columbia.edu', 'NSF_ID': '000113872', 'StartDate': '04/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Columbia University', 'CityName': 'NEW YORK', 'ZipCode': '100277922', 'PhoneNumber': '2128546851', 'StreetAddress': '615 W 131ST ST', 'StreetAddress2': 'MC 8741', 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY', 'CONGRESSDISTRICT': '13', 'CONGRESS_DISTRICT_ORG': 'NY13', 'ORG_UEI_NUM': 'F4N1QNPB95M4', 'ORG_LGL_BUS_NAME': 'THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1620', 'Text': 'Marine Geology and Geophysics'}
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