# Southern Ocean MOCNESS Plankton Tow and Water Chemistry Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/21990 # Description: # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mortyn2003/mortyn2003tno57-13foram.txt # Description: # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleoceanography # # Dataset DOI: # # Parameter_Keywords: population abundance, oxygen isotopes, carbon isotopes #-------------------- # Contribution_Date # Date: 2017-04-24 #-------------------- # File_Last_Modified_Date # Date: 2017-04-24 #-------------------- # Title # Study_Name: Southern Ocean MOCNESS Plankton Tow and Water Chemistry Data #-------------------- # Investigators # Investigators: Mortyn, P.G.; Charles, C.D. #-------------------- # Description_Notes_and_Keywords # Description: Plankton tow foraminiferal census and stable isotope (d18O and d13C) and water chemistry data # collected near 6 drill sites in the Atlantic sector of the Southern Ocean. d18O analyses were carried out on # the 150-250-um fraction of Globigerina bulloides, Neogloboquadrina pachyderma, Globorotalia truncatulinoides, # Globorotalia inflata, and Orbulina universa. #-------------------- # Publication # Authors: P. Graham Mortyn and Christopher D. Charles # Published_Date_or_Year: 2003-06-01 # Published_Title: Planktonic foraminiferal depth habitat and d18O calibrations: Plankton tow results from the Atlantic sector of the Southern Ocean # Journal_Name: Paleoceanography # Volume: 18 # Edition: # Issue: 2 # Pages: # Report_Number: # DOI: 10.1029/2001PA000637 # Online_Resource: http://onlinelibrary.wiley.com/doi/10.1029/2001PA000637/full # Full_Citation: # Abstract: Plankton tows conducted in the Atlantic sector of the Southern Ocean allow analysis of the influence of water column structure on planktonic foraminiferal abundance and d18O composition. Foraminiferal abundance varies by several orders of magnitude across a large gradient in sea surface temperature and other hydrographic features, demonstrating high sensitivity of foraminiferal populations to regional differences in water properties. The depth of maximum abundance for key species such as Globigerina bulloides and Neogloboquadrina pachyderma is not constant from station to station. The pattern suggests that their abundance and shell chemistry are tied to density horizons or other conditions (such as food availability) that become more sharply defined with depth in the northern subantarctic. The consistent observation of Globorotalia inflata and Globoratalia truncatulinoides as relatively deep-dwelling species confirms their utility as indicators of upper thermocline properties. In d18O all species are observed to be isotopically lighter than predicted from water properties, but the species-specific offset is fairly uniform at all stations. These observations define the utility of multispecies d18O for reconstructing temperature and density stratification from past surface oceans. #------------------ # Funding_Agency # Funding_Agency_Name: US National Oceanic and Atmospheric Administration # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: #------------------ # Site_Information # Site_Name: TNO57-13 # Location: Ocean>Southern Ocean # Country: # Northernmost_Latitude: -53.0 # Southernmost_Latitude: -53.0 # Easternmost_Longitude: 5.0 # Westernmost_Longitude: 5.0 # Elevation: #------------------ # Data_Collection # Collection_Name: TNO57-13foram # Earliest_Year: 1996 # Most_Recent_Year: 1997 # Time_Unit: AD # Core_Length: # Notes: #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## depth_m depth, , , m, , , water depth, ,N, ## g.bull Globigerina bulloides abundance, , , number per m3 seawater, ,paleoceanography, ,MOCNESS,N, ## n.pachy-r Neogloboquadrina pachyderma right coiling abundance, , , number per m3 seawater, ,paleoceanography, ,MOCNESS,N, ## n.pachy-l Neogloboquadrina pachyderma left coiling abundance, , , number per m3 seawater, ,paleoceanography, ,MOCNESS,N, ## t.quinq Turborotalita quinqueloba abundance, , , number per m3 seawater, ,paleoceanography, ,MOCNESS,N, ## g.infla Globorotalia inflata abundance, , , number per m3 seawater, ,paleoceanography, ,MOCNESS,N, ## o.univer Orbulina universa abundance, , , number per m3 seawater, ,paleoceanography, ,MOCNESS,N, ## g.trc Globorotalia truncatulinoides abundance, , , number per m3 seawater, ,paleoceanography, ,MOCNESS,N, ## d13Cg.bull delta 13C, Globigerina bulloides, , per mil PDB, ,paleoceanography, 150-250-um fraction,MOCNESS,N, ## d18Og.bull delta 18O, Globigerina bulloides, , per mil PDB, ,paleoceanography, 150-250-um fraction,MOCNESS,N, ## d13Cn.pachy delta 13C, Neogloboquadrina pachyderma, , per mil PDB, ,paleoceanography, 150-250-um fraction,MOCNESS,N, ## d18On.pachy delta 18O, Neogloboquadrina pachyderma, , per mil PDB, ,paleoceanography, 150-250-um fraction,MOCNESS,N, # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # depth_m g.bull n.pachy-r n.pachy-l t.quinq g.infla o.univer g.trc d13Cg.bull d18Og.bull d13Cn.pachy d18On.pachy 12.5 0.0019 0.001 0.0306 0 0 0 0.001 0.61949 2.2392 37.5 0.0276 0 0.0012 0 0 0 0 62.5 0.1276 0 0.0302 0.0022 0.0022 0 0.0034 0.15076 1.5972 87.5 0.012 0.0012 0.0096 0.0024 0.0024 0 0.0024 125 0.0012 0.0058 0.0185 0.0012 0 0 0.0139 175 0.0049 0 0.0049 0.0049 0 0 0 250 0 0.0012 0.0012 0 0 0 0.0012 350 0.004 0 0.0012 0 0 0 0 450 0.0016 0 0.0031 0.0016 0 0 0