; archiveType changed - was originally Lake sediment (LS)
Semi-preparative HPLC-MS to isolate dinosterol, which was then acetylated and injected on a GC, Delta V IRMS system
dD values of lake surface water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying seawater. As rain also increases the density stratification in the lakes, decreasing mixing, surface water dD values are expected to be significantly lower during wet periods compared with dry periods. Conclusions of the paper are about moisture balance (P-E) in the tropical Pacific.
Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid ?D values can be expected to closely co-vary with the surface water ?Dvalues25,26. ?D values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water ?D values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.
depends on source, transport history, etc
Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid dD values can be expected to closely co-vary with the surface water dDvalues25,26. dD values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water dD values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.
positive (more mixing, higher d2H in surface waters)
mixing with sea water which is in bottom of meromictic lake
fraction of modern 14C activity uncertainty
210Pb, 239+240Pu or 137Cs activity uncertainty
Y if supported 210Pb activity, N if unsupported 210Pb activity
model used to convert 210Pb activity to age (e.g., constant rate of supply)
years before 1950 (calibrated age, or ages that dont need calibration)
Methodology in Smittenberg and Sachs, 2007, Journal of Chromatography, 1169:70-76
d2H (LPD292174f8): paleoData_isPrimary: '' has been replaced by 'FALSE'
d2H (LPD292174f8): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
d2H (LS09SASP01A): paleoData_isPrimary: '' has been replaced by 'FALSE'
d2H (LS09SASP01A): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
year (MAT3e773ec33c): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (MAT3e773ec33c): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
depth (MAT851bf03235): paleoData_isPrimary: '' has been replaced by 'FALSE'
depth (MAT851bf03235): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
d2H (LPD292174f8): interpretation1_direction: 'negative' has been replaced by ''
d2H (LPD292174f8): interpretation1_mathematicalRelation: 'linear' has been replaced by ''
d2H (LPD292174f8): interpretation1_scope: 'isotope' has been replaced by 'climate'
d2H (LPD292174f8): interpretation1_variable: 'hydrologicBalance' has been replaced by ''
d2H (LPD292174f8): interpretation1_variableGroup: 'EffectiveMoisture' has been replaced by ''
d2H (LPD292174f8): interpretation1_variableGroupDirection: 'negative' has been replaced by ''
d2H (LPD292174f8): interpretation1_variableGroupOriginal: 'I_E' has been replaced by ''
d2H (LPD292174f8): interpretation2_scope: '' has been replaced by 'climate'
d2H (LPD292174f8): interpretation3_scope: '' has been replaced by 'climate'
d2H (LPD292174f8): interpretation4_direction: '' has been replaced by 'negative'
d2H (LPD292174f8): interpretation4_scope: '' has been replaced by 'isotope'
d2H (LPD292174f8): interpretation4_variable: '' has been replaced by 'hydrologicBalance'
d2H (LPD292174f8): interpretation4_variableGroup: '' has been replaced by 'EffectiveMoisture'
d2H (LPD292174f8): interpretation4_mathematicalRelation: '' has been replaced by 'linear'
d2H (LPD292174f8): interpretation4_variableGroupDirection: '' has been replaced by 'negative'
d2H (LPD292174f8): interpretation4_variableGroupOriginal: '' has been replaced by 'I_E'
d2H (LPD292174f8): interpretation5_scope: '' has been replaced by 'isotope'
d2H (LPD292174f8): interpretation6_scope: '' has been replaced by 'isotope'
d2H (LS09SASP01A): interpretation2_basis: 'Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid ?D values can be expected to closely co-vary with the surface water ?Dvalues25,26. ?D values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water ?D values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.' has been replaced by ''
d2H (LS09SASP01A): interpretation2_direction: 'negative' has been replaced by ''
d2H (LS09SASP01A): interpretation2_inferredMaterial: 'lake water' has been replaced by ''
d2H (LS09SASP01A): interpretation2_mathematicalRelation: 'linear' has been replaced by ''
d2H (LS09SASP01A): interpretation2_scope: 'isotope' has been replaced by 'climate'
d2H (LS09SASP01A): interpretation2_seasonality: 'Annual' has been replaced by ''
d2H (LS09SASP01A): interpretation2_seasonalityOriginal: 'Annual' has been replaced by ''
d2H (LS09SASP01A): interpretation2_variable: 'precipitation' has been replaced by ''
d2H (LS09SASP01A): interpretation2_variableGroup: 'EffectiveMoisture' has been replaced by ''
d2H (LS09SASP01A): interpretation2_variableGroupDirection: 'negative' has been replaced by ''
d2H (LS09SASP01A): interpretation2_variableGroupOriginal: 'P_amount' has been replaced by ''
d2H (LS09SASP01A): interpretation3_basis: 'Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid ?D values can be expected to closely co-vary with the surface water ?Dvalues25,26. ?D values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water ?D values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.' has been replaced by ''
d2H (LS09SASP01A): interpretation3_direction: 'depends on source, transport history, etc' has been replaced by ''
d2H (LS09SASP01A): interpretation3_inferredMaterial: 'lake water' has been replaced by ''
d2H (LS09SASP01A): interpretation3_scope: 'isotope' has been replaced by 'climate'
d2H (LS09SASP01A): interpretation3_seasonality: 'Annual' has been replaced by ''
d2H (LS09SASP01A): interpretation3_seasonalityOriginal: 'Annual' has been replaced by ''
d2H (LS09SASP01A): interpretation3_variable: 'precipitationIsotope' has been replaced by ''
d2H (LS09SASP01A): interpretation3_variableGroup: 'P_isotope' has been replaced by ''
d2H (LS09SASP01A): interpretation3_variableGroupDirection: 'positive' has been replaced by ''
d2H (LS09SASP01A): interpretation3_variableGroupOriginal: 'rainfall d2H' has been replaced by ''
d2H (LS09SASP01A): interpretation4_basis: 'Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid dD values can be expected to closely co-vary with the surface water dDvalues25,26. dD values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water dD values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.' has been replaced by 'Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid ?D values can be expected to closely co-vary with the surface water ?Dvalues25,26. ?D values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water ?D values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.'
d2H (LS09SASP01A): interpretation4_direction: 'positive (more mixing, higher d2H in surface waters)' has been replaced by 'negative'
d2H (LS09SASP01A): interpretation4_variable: 'lakeWaterIsotope' has been replaced by 'precipitation'
d2H (LS09SASP01A): interpretation4_variableGroup: 'mixing with sea water which is in bottom of meromictic lake' has been replaced by 'EffectiveMoisture'
d2H (LS09SASP01A): interpretation4_mathematicalRelation: '' has been replaced by 'linear'
d2H (LS09SASP01A): interpretation4_variableGroupDirection: '' has been replaced by 'negative'
d2H (LS09SASP01A): interpretation4_variableGroupOriginal: '' has been replaced by 'P_amount'
d2H (LS09SASP01A): interpretation5_basis: '' has been replaced by 'Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid ?D values can be expected to closely co-vary with the surface water ?Dvalues25,26. ?D values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water ?D values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.'
d2H (LS09SASP01A): interpretation5_direction: '' has been replaced by 'depends on source, transport history, etc'
d2H (LS09SASP01A): interpretation5_inferredMaterial: '' has been replaced by 'lake water'
d2H (LS09SASP01A): interpretation5_scope: '' has been replaced by 'isotope'
d2H (LS09SASP01A): interpretation5_seasonality: '' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation5_seasonalityOriginal: '' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation5_variable: '' has been replaced by 'precipitationIsotope'
d2H (LS09SASP01A): interpretation5_variableGroup: '' has been replaced by 'P_isotope'
d2H (LS09SASP01A): interpretation5_variableGroupDirection: '' has been replaced by 'positive'
d2H (LS09SASP01A): interpretation5_variableGroupOriginal: '' has been replaced by 'rainfall d2H'
d2H (LS09SASP01A): interpretation6_basis: '' has been replaced by 'Permanent anoxia in the subsurface water confines phytoplankton, dominated by dinoflagellates and diatoms24, to the oxygenated, brackish and deuterium-depleted surface water where their lipid dD values can be expected to closely co-vary with the surface water dDvalues25,26. dD values of that water are controlled by the amount of rainfall, its isotopic composition and the amount of mixing with the underlying sea water. As rain also increases the density stratification in the lakes, decreasing mixing, surface water dD values are expected to be significantly lower during wet periods compared with dry periods. Zhang and Sachs 2007, Organic Geochemistry, 38: 582-608.'
d2H (LS09SASP01A): interpretation6_direction: '' has been replaced by 'positive (more mixing, higher d2H in surface waters)'
d2H (LS09SASP01A): interpretation6_inferredMaterial: '' has been replaced by 'lake water'
d2H (LS09SASP01A): interpretation6_scope: '' has been replaced by 'isotope'
d2H (LS09SASP01A): interpretation6_seasonality: '' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation6_seasonalityOriginal: '' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation6_variable: '' has been replaced by 'lakeWaterIsotope'
d2H (LS09SASP01A): interpretation6_variableGroup: '' has been replaced by 'mixing with sea water which is in bottom of meromictic lake'
Updated lipdverse database entry with a changed file.
d2H (LPD292174f8): interpretation1_variable: 'I_E' has been replaced by 'hydrologicBalance'
d2H (LS09SASP01A): interpretation1_seasonality: 'annual' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation1_variable: 'Precipitation amount' has been replaced by 'precipitation'
d2H (LS09SASP01A): interpretation2_seasonality: 'annual' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation2_variable: 'P_amount' has been replaced by 'precipitation'
d2H (LS09SASP01A): interpretation3_seasonality: 'annual' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation3_variable: 'rainfall d2H' has been replaced by 'precipitationIsotope'
d2H (LS09SASP01A): interpretation4_seasonality: 'annual' has been replaced by 'Annual'
d2H (LS09SASP01A): interpretation4_variable: 'mixing with sea water which is in bottom of meromictic lake' has been replaced by 'lakeWaterIsotope'
Changes made as part of LiPDverse vocabulary standardization process
d2H (LPD292174f8): paleoData_longName: '' has been replaced by 'AD'
d2H (LS09SASP01A): paleoData_longName: '' has been replaced by 'AD'
year (MAT3e773ec33c): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MAT3e773ec33c): paleoData_longName: '' has been replaced by 'AD'
depth (MAT851bf03235): paleoData_longName: '' has been replaced by 'AD'
Sachs, Julian P. , Sachse, Dirk , Smittenberg, Rienk H. , Zhang, Zhaohui , Battisti, David S. , Golubic, Stjepko
Sachs, J. P., Sachse, D., Smittenberg, R. H., Zhang, Z., Battisti, D. S. and Golubic, S.: Southward movement of the Pacific intertropical convergence zone AD 1400–1850, Nature Geoscience, 2(7), 519–525, doi:10.1038/ngeo554, 2009.
Southward movement of the Pacific intertropical convergence zone AD 1400?1850