Kiel automated device for isotope ratio mass spectrometry on a Finnigan Delta XL mass ratio spectrometer.
Chara encrustations, ostracodes, gastropod and mollusk shell fragments and the <125-mm fraction of marl sediment from selected intervals of the core
; archiveType changed - was originally Lake sediment (LS)
Bulk sediment samples were taken from core C/E for isotope analyses at 0.5-cm increments for the uppermost 16.5 cm (32 field-extruded samples; Glew, 1988; Glew et al., 2001), at 1-cm increments from 16.5-cm depth to the White River Ash at 64-cm depth, and at 2-cm increments from 64- to 144-cm depth for a total of 121 samples. The bulk sediment samples were wet sieved through nested screens (63, 125, 250-mm), collected separately and freeze dried. At least five individual Chara stem encrustations (1?3 mm each in length) were picked from the dried fractions, examined for purity, homogenized and sub- sampled for CO2 extraction
18O-enrichment in Marcella Lake water caused by summer effective moisture conditions; These prominent late Holocene changes in effective moisture occurred simultaneously with changes in Aleutian Low circulation patterns over the Gulf of Alaska indicated by Jellybean Lake. The reconstructed climate patterns are consistent with the topographically controlled climatic heterogeneity observed in the coastal mountains and interior valleys of the region today
effective moisture occurred simultaneously with changes in Aleutian Low circulation
Temperature fractionations between calcite and lake water were considered and are thought to be minor (0.25%/1C).
dsample 1?4 ([Rsample/Rstandard]-) x 1000 where R = 2H/1H, 18O/16O in sample and standard, respectively; First, the oxygen isotope stratigraphy from each lake was converted into three smoothed time-series at 50, 100 and 200-year intervals to examine multi-decadal and longer-term variations (Figs. 5a and b). Second, the Jellybean-d18OCa time-series were subtracted from the Marcella-d18O Chara time-series to produce a third, Dd (Fig. 5c). Variability of evaporation-insensitive Jellybean-d18OCa is relatively small (1.5?2%) compared to Marcella Lake (4.0?5.0%), but there are intervals where the d18Op correction results in distinguishable effects on long-term trends of Marcella-d18OChara (note arrows in Fig. 5a and c). The smoothing procedure was done to eliminate problems due to temporal mismatches between individual samples from the two cores but given the nature of the trends does not significantly effect the uncertainty regarding timing of prominent shifts or long-term trends.
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)
age (MAT7ad84f8db8): interpretation5_scope: '' has been replaced by 'climate'
depth (MATf01b198877): interpretation5_scope: '' has been replaced by 'climate'
Updated lipdverse database entry with a changed file.
age (MAT7ad84f8db8): paleoData_units: 'yr AD' has been replaced by 'yr BP'
age (MAT7ad84f8db8): paleoData_variableName: 'year' has been replaced by 'age'
year (MAT7ad84f8db8): interpretation4_scope: '' has been replaced by 'climate'
depth (MATf01b198877): interpretation4_scope: '' has been replaced by 'climate'
d18O (LS07ANMA): paleoData_isPrimary: '' has been replaced by 'FALSE'
d18O (LS07ANMA): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
year (MAT7ad84f8db8): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (MAT7ad84f8db8): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
depth (MATf01b198877): paleoData_isPrimary: '' has been replaced by 'FALSE'
depth (MATf01b198877): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
d18O (LS07ANMA): interpretation2_direction: 'negative' has been replaced by ''
d18O (LS07ANMA): interpretation2_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS07ANMA): interpretation2_integrationTime: '100' has been replaced by ''
d18O (LS07ANMA): interpretation2_integrationTimeUncertaintyType: 'chronological' has been replaced by ''
d18O (LS07ANMA): interpretation2_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS07ANMA): interpretation2_rank: '1' has been replaced by ''
d18O (LS07ANMA): interpretation2_scope: 'isotope' has been replaced by 'climate'
d18O (LS07ANMA): interpretation2_seasonality: 'Jun-Aug' has been replaced by ''
d18O (LS07ANMA): interpretation2_variable: 'effectivePrecipitation' has been replaced by ''
d18O (LS07ANMA): interpretation2_variableGroup: 'EffectiveMoisture' has been replaced by ''
d18O (LS07ANMA): interpretation2_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS07ANMA): interpretation2_variableGroupOriginal: 'P_E' has been replaced by ''
d18O (LS07ANMA): interpretation3_basis: 'Temperature fractionations between calcite and lake water were considered and are thought to be minor (0.25%/1C).' has been replaced by ''
d18O (LS07ANMA): interpretation3_inferredMaterial: 'lake water' has been replaced by ''
d18O (LS07ANMA): interpretation3_integrationTime: '100' has been replaced by ''
d18O (LS07ANMA): interpretation3_integrationTimeUncertaintyType: 'chronological' has been replaced by ''
d18O (LS07ANMA): interpretation3_integrationTimeUnits: 'years' has been replaced by ''
d18O (LS07ANMA): interpretation3_rank: '2' has been replaced by ''
d18O (LS07ANMA): interpretation3_scope: 'isotope' has been replaced by 'climate'
d18O (LS07ANMA): interpretation3_variable: 'temperature' has been replaced by ''
d18O (LS07ANMA): interpretation3_variableGroup: 'Temperature' has been replaced by ''
d18O (LS07ANMA): interpretation3_variableGroupDirection: 'negative' has been replaced by ''
d18O (LS07ANMA): interpretation3_variableGroupOriginal: 'T_water' has been replaced by ''
d18O (LS07ANMA): interpretation4_direction: '' has been replaced by 'negative'
d18O (LS07ANMA): interpretation4_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS07ANMA): interpretation4_integrationTime: '' has been replaced by '100'
d18O (LS07ANMA): interpretation4_integrationTimeUncertaintyType: '' has been replaced by 'chronological'
d18O (LS07ANMA): interpretation4_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS07ANMA): interpretation4_rank: '' has been replaced by '1'
d18O (LS07ANMA): interpretation4_scope: '' has been replaced by 'isotope'
d18O (LS07ANMA): interpretation4_seasonality: '' has been replaced by 'Jun-Aug'
d18O (LS07ANMA): interpretation4_variable: '' has been replaced by 'effectivePrecipitation'
d18O (LS07ANMA): interpretation4_variableGroup: '' has been replaced by 'EffectiveMoisture'
d18O (LS07ANMA): interpretation4_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS07ANMA): interpretation4_variableGroupOriginal: '' has been replaced by 'P_E'
d18O (LS07ANMA): interpretation5_basis: '' has been replaced by 'Temperature fractionations between calcite and lake water were considered and are thought to be minor (0.25%/1C).'
d18O (LS07ANMA): interpretation5_inferredMaterial: '' has been replaced by 'lake water'
d18O (LS07ANMA): interpretation5_integrationTime: '' has been replaced by '100'
d18O (LS07ANMA): interpretation5_integrationTimeUncertaintyType: '' has been replaced by 'chronological'
d18O (LS07ANMA): interpretation5_integrationTimeUnits: '' has been replaced by 'years'
d18O (LS07ANMA): interpretation5_rank: '' has been replaced by '2'
d18O (LS07ANMA): interpretation5_scope: '' has been replaced by 'isotope'
d18O (LS07ANMA): interpretation5_variable: '' has been replaced by 'temperature'
d18O (LS07ANMA): interpretation5_variableGroup: '' has been replaced by 'Temperature'
d18O (LS07ANMA): interpretation5_variableGroupDirection: '' has been replaced by 'negative'
d18O (LS07ANMA): interpretation5_variableGroupOriginal: '' has been replaced by 'T_water'
d18O (LS07ANMA): interpretation6_scope: '' has been replaced by 'isotope'
year (MAT7ad84f8db8): interpretation1_scope: '' has been replaced by 'climate'
year (MAT7ad84f8db8): interpretation2_scope: '' has been replaced by 'climate'
year (MAT7ad84f8db8): interpretation3_scope: '' has been replaced by 'climate'
depth (MATf01b198877): interpretation1_scope: '' has been replaced by 'climate'
depth (MATf01b198877): interpretation2_scope: '' has been replaced by 'climate'
depth (MATf01b198877): interpretation3_scope: '' has been replaced by 'climate'
d18O (LS07ANMA): interpretation1_variable: 'Effective Moisture' has been replaced by 'effectivePrecipitation'
d18O (LS07ANMA): interpretation2_seasonality: 'JJA' has been replaced by 'Jun-Aug'
d18O (LS07ANMA): interpretation2_variable: 'P_E' has been replaced by 'effectivePrecipitation'
d18O (LS07ANMA): interpretation3_variable: 'T_water' has been replaced by 'temperature'
Changes made as part of LiPDverse vocabulary standardization process
d18O (LS07ANMA): paleoData_longName: '' has been replaced by 'AD'
year (MAT7ad84f8db8): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MAT7ad84f8db8): paleoData_longName: '' has been replaced by 'AD'
depth (MATf01b198877): paleoData_longName: '' has been replaced by 'AD'
Anderson, Lesleigh , Abbott, Mark B. , Finney, Bruce P. , Burns, Stephen J.
Anderson, L., Abbott, M. B., Finney, B. P. and Burns, S. J.: Late Holocene moisture balance variability in the southwest Yukon Territory, Canada, Quaternary Science Reviews, 26(1-2), 130–141, doi:10.1016/j.quascirev.2006.04.011, 2007.
Late Holocene moisture balance variability in the southwest Yukon Territory, Canada