check if chronology and/or sensor integration time. integrationTime "uncertainty type" given but no time. (GF)
; archiveType changed - was originally Lake sediment (LS)
check if chronology and/or sensor integration time.
Where water loss is mainly through evaporation as is likely for Lake Ashenge, the waters tend to have a variable and elevated oxygen isotope composition relative to regional rainfall (which tends to be negative). Measured d18Ocarb values are always higher than those of ambient precipitation as the lighter isotope 16O is preferentially lost to evaporation (Leng et al.,2006)...The isotope records from Ashenge therefore show large swings in composition as the ratio of precipitation to evaporation (P/E) has changed through time
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)
was this date used in the age modelpermil
age (MAT4af57a079e): interpretation3_scope: '' has been replaced by 'climate'
age (MAT4af57a079e): interpretation4_scope: '' has been replaced by 'climate'
depth (MAT9b7da70963): interpretation3_scope: '' has been replaced by 'climate'
depth (MAT9b7da70963): interpretation4_scope: '' has been replaced by 'climate'
Updated lipdverse database entry with a changed file.
age (MAT4af57a079e): paleoData_units: 'yr AD' has been replaced by 'yr BP'
age (MAT4af57a079e): paleoData_variableName: 'year' has been replaced by 'age'
d18O (LS09MAAS): paleoData_isPrimary: '' has been replaced by 'FALSE'
d18O (LS09MAAS): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
year (MAT4af57a079e): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (MAT4af57a079e): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
depth (MAT9b7da70963): paleoData_isPrimary: '' has been replaced by 'FALSE'
depth (MAT9b7da70963): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
d18O (LS09MAAS): interpretation1_basis: 'Where water loss is mainly through evaporation as is likely for Lake Ashenge, the waters tend to have a variable and elevated oxygen isotope composition relative to regional rainfall (which tends to be negative). Measured d18Ocarb values are always higher than those of ambient precipitation as the lighter isotope 16O is preferentially lost to evaporation (Leng et al.,2006)...The isotope records from Ashenge therefore show large swings in composition as the ratio of precipitation to evaporation (P/E) has changed through time' has been replaced by ''
d18O (LS09MAAS): interpretation1_direction: 'negative' has been replaced by ''
d18O (LS09MAAS): interpretation1_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS09MAAS): interpretation1_integrationTimeUncertaintyType: 'chronology, unknown lake residence time' has been replaced by ''
d18O (LS09MAAS): interpretation1_integrationTimeUnits: 'Years' has been replaced by ''
d18O (LS09MAAS): interpretation1_rank: '1' has been replaced by ''
d18O (LS09MAAS): interpretation1_scope: 'isotope' has been replaced by 'climate'
d18O (LS09MAAS): interpretation1_variable: 'effectivePrecipitation' has been replaced by ''
d18O (LS09MAAS): interpretation1_variableGroup: 'EffectiveMoisture' has been replaced by ''
d18O (LS09MAAS): interpretation1_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS09MAAS): interpretation1_variableGroupOriginal: 'P_E' has been replaced by ''
d18O (LS09MAAS): interpretation2_direction: 'negative' has been replaced by ''
d18O (LS09MAAS): interpretation2_inferredMaterial: 'Lake water' has been replaced by ''
d18O (LS09MAAS): interpretation2_integrationTimeUncertaintyType: 'chronology, unknown lake residence time' has been replaced by ''
d18O (LS09MAAS): interpretation2_integrationTimeUnits: 'Years' has been replaced by ''
d18O (LS09MAAS): interpretation2_rank: '2' has been replaced by ''
d18O (LS09MAAS): interpretation2_scope: 'isotope' has been replaced by 'climate'
d18O (LS09MAAS): interpretation2_variable: 'temperature' has been replaced by ''
d18O (LS09MAAS): interpretation2_variableGroup: 'Temperature' has been replaced by ''
d18O (LS09MAAS): interpretation2_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS09MAAS): interpretation2_variableGroupOriginal: 'T_water' has been replaced by ''
d18O (LS09MAAS): interpretation3_scope: '' has been replaced by 'climate'
d18O (LS09MAAS): interpretation4_basis: '' has been replaced by 'Where water loss is mainly through evaporation as is likely for Lake Ashenge, the waters tend to have a variable and elevated oxygen isotope composition relative to regional rainfall (which tends to be negative). Measured d18Ocarb values are always higher than those of ambient precipitation as the lighter isotope 16O is preferentially lost to evaporation (Leng et al.,2006)...The isotope records from Ashenge therefore show large swings in composition as the ratio of precipitation to evaporation (P/E) has changed through time'
d18O (LS09MAAS): interpretation4_direction: '' has been replaced by 'negative'
d18O (LS09MAAS): interpretation4_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS09MAAS): interpretation4_integrationTimeUncertaintyType: '' has been replaced by 'chronology, unknown lake residence time'
d18O (LS09MAAS): interpretation4_integrationTimeUnits: '' has been replaced by 'Years'
d18O (LS09MAAS): interpretation4_rank: '' has been replaced by '1'
d18O (LS09MAAS): interpretation4_scope: '' has been replaced by 'isotope'
d18O (LS09MAAS): interpretation4_variable: '' has been replaced by 'effectivePrecipitation'
d18O (LS09MAAS): interpretation4_variableGroup: '' has been replaced by 'EffectiveMoisture'
d18O (LS09MAAS): interpretation4_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS09MAAS): interpretation4_variableGroupOriginal: '' has been replaced by 'P_E'
d18O (LS09MAAS): interpretation5_direction: '' has been replaced by 'negative'
d18O (LS09MAAS): interpretation5_inferredMaterial: '' has been replaced by 'Lake water'
d18O (LS09MAAS): interpretation5_integrationTimeUncertaintyType: '' has been replaced by 'chronology, unknown lake residence time'
d18O (LS09MAAS): interpretation5_integrationTimeUnits: '' has been replaced by 'Years'
d18O (LS09MAAS): interpretation5_rank: '' has been replaced by '2'
d18O (LS09MAAS): interpretation5_scope: '' has been replaced by 'isotope'
d18O (LS09MAAS): interpretation5_variable: '' has been replaced by 'temperature'
d18O (LS09MAAS): interpretation5_variableGroup: '' has been replaced by 'Temperature'
d18O (LS09MAAS): interpretation5_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS09MAAS): interpretation5_variableGroupOriginal: '' has been replaced by 'T_water'
d18O (LS09MAAS): interpretation6_scope: '' has been replaced by 'isotope'
year (MAT4af57a079e): interpretation1_scope: '' has been replaced by 'climate'
year (MAT4af57a079e): interpretation2_scope: '' has been replaced by 'climate'
depth (MAT9b7da70963): interpretation1_scope: '' has been replaced by 'climate'
depth (MAT9b7da70963): interpretation2_scope: '' has been replaced by 'climate'
d18O (LS09MAAS): interpretation1_variable: 'P_E' has been replaced by 'effectivePrecipitation'
d18O (LS09MAAS): interpretation2_variable: 'T_water' has been replaced by 'temperature'
Changes made as part of LiPDverse vocabulary standardization process
d18O (LS09MAAS): paleoData_longName: '' has been replaced by 'AD'
year (MAT4af57a079e): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MAT4af57a079e): paleoData_longName: '' has been replaced by 'AD'
depth (MAT9b7da70963): paleoData_longName: '' has been replaced by 'AD'
Marshall, Michael H. , Lamb, Henry F. , Davies, Sarah J. , Leng, Melanie J. , Kubsa, Zelalem , Umer, Mohammed , Bryant, Charlotte
Marshall, M. H., Lamb, H. F., Davies, S. J., Leng, M. J., Kubsa, Z., Umer, M. and Bryant, C.: Climatic change in northern Ethiopia during the past 17,000 years: A diatom and stable isotope record from Lake Ashenge, Palaeogeography, Palaeoclimatology, Palaeoecology, 279(1-2), 114–127, doi:10.1016/j.palaeo.2009.05.003, 2009.
Palaeogeography, Palaeoclimatology, Palaeoecology
Climatic change in northern Ethiopia during the past 17,000degreesyears: A diatom and stable isotope record from Lake Ashenge