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iso2k-1_1_0
archiveType: LakeSediment
originalDataUrl: https://www.ncdc.noaa.gov/paleo/study/6107
lipdVersion: 1.3
author: Hodell, David A. , Brenner, Mark , Curtis, Jason H. , Medina-Gonzi¿½lez, Roger , Ildefonso-Chan Can, Enrique , Albornaz-Pat, Alma , Guilderson, Thomas P.
journal: Quaternary Research
volume: 63
pages: -12
title: Climate change on the Yucatan Peninsula during the Little Ice Age
doi: 10.1016/j.yqres.2004.11.004
latitude: 20.61
longitude: -89.715
elevation: 10
siteName: Aguada Xcaamal
TSid: MAT84a9b485af
variableName: year
units: yr AD
description: Year AD
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: MATc677ac6a42
variableName: depth
units: cm
description: depth
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: LS05HOAG01
variableName: d18O
units: permil
description: carbonate
basis: The salinity and 18O content of the lake water increased as a result of reduced precipitation and/or increased evaporation in the mid- to late 1500s
scope: climate
variable: effectivePrecipitation
variableGroup: E/P
scope: climate
scope: climate
basis: Variations in carbonate d18O in Aguada X?caamal were principally controlled by changes in the d18O of lake water that, in turn, reflect changes in the lake?s hydrologic budget (evaporation, precipitation, and outflow) and the d18O of incoming precipitation and groundwater
direction: negative
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 1
scope: isotope
variable: hydrologicBalance
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: I_E
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 2
scope: isotope
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupDirection: positive
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 3
scope: isotope
variable: groundWaterIsotope
variableGroup: G_isotope
TSid: MAT005c7252d7
variableName: year
units: yr AD
description: Year AD
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: MAT1ff4dd97a5
variableName: depth
units: cm
description: depth
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: LS05HOAG02
variableName: d18O
units: permil
description: carbonate
basis: The salinity and 18O content of the lake water increased as a result of reduced precipitation and/or increased evaporation in the mid- to late 1500s
scope: climate
variable: effectivePrecipitation
variableGroup: E/P
scope: climate
scope: climate
basis: Variations in carbonate d18O in Aguada X?caamal were principally controlled by changes in the d18O of lake water that, in turn, reflect changes in the lake?s hydrologic budget (evaporation, precipitation, and outflow) and the d18O of incoming precipitation and groundwater
direction: negative
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 1
scope: isotope
variable: hydrologicBalance
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: I_E
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 2
scope: isotope
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupDirection: positive
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 3
scope: isotope
variable: groundWaterIsotope
variableGroup: G_isotope
TSid: MAT857b62a589
variableName: year
units: yr AD
description: Year AD
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: MATae189b27a0
variableName: depth
units: cm
description: depth
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: LS05HOAG03
variableName: d18O
units: permil
description: carbonate
basis: The salinity and 18O content of the lake water increased as a result of reduced precipitation and/or increased evaporation in the mid- to late 1500s
scope: climate
variable: effectivePrecipitation
variableGroup: E/P
scope: climate
scope: climate
basis: Variations in carbonate d18O in Aguada X?caamal were principally controlled by changes in the d18O of lake water that, in turn, reflect changes in the lake?s hydrologic budget (evaporation, precipitation, and outflow) and the d18O of incoming precipitation and groundwater
direction: negative
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 1
scope: isotope
variable: hydrologicBalance
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: I_E
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 2
scope: isotope
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupDirection: positive
equilibriumEvidence: Core-top d18O values for ostracods and gastropods are close to calculated equilibrium values for calcite and aragonite, respectively
inferredMaterial: lake water
integrationTimeUncertaintyType: Chonology; multiple potential controls on d18O
integrationTimeUnits: Years
rank: 3
scope: isotope
variable: groundWaterIsotope
variableGroup: G_isotope
TSid: chron1
variableName: depth
units: cm
description: mid-point depth
TSid: chron2
variableName: age14C
units: yr14C BP
description: 14C years before 1950
TSid: chron3
variableName: SD
units: yr14C BP
description: 14C years uncertainty
TSid: chron4
variableName: fractionModern
description: fraction of modern 14C activity
TSid: chron5
variableName: fractionModernUncertainty
description: fraction of modern 14C activity uncertainty
TSid: chron6
variableName: delta13C
units: permil
description: delta13C of material analyzed for 14C
TSid: chron7
variableName: delta13Cuncertainty
units: permil
description: delta13C uncertainty
TSid: chron8
variableName: thickness
units: cm
description: thickness of sample (along depth axis)
TSid: chron9
variableName: labID
description: laboratory ID from radiocarbon facility
TSid: chron10
variableName: materialDated
description: material analyzed
TSid: chron11
variableName: activity
units: Bq g-1
description: 210Pb, 239+240Pu or 137Cs activity
TSid: chron12
variableName: activityUncertainty
units: Bq g-1
description: 210Pb, 239+240Pu or 137Cs activity uncertainty
TSid: chron13
variableName: supportedActivity
description: Y if supported 210Pb activity, N if unsupported 210Pb activity
TSid: chron14
variableName: x210PbModel
description: model used to convert 210Pb activity to age (e.g., constant rate of supply)
TSid: chron15
variableName: age
units: yr BP
description: years before 1950 (calibrated age, or ages that dont need calibration)
TSid: chron16
variableName: SD
units: yr BP
description: uncertainty in age
TSid: chron17
variableName: reservoirAge14C
units: yr14C BP
description: 14C reservoir age
TSid: chron18
variableName: reservoirAge14CUncertainty
units: yr14C BP
description: 14C reservoir age uncertainty
TSid: chron19
variableName: useInAgeModel
description: was this date used in the age model?
TSid: chron1
variableName: depth
units: cm
description: mid-point depth
TSid: chron2
variableName: age14C
units: yr14C BP
description: 14C years before 1950
TSid: chron3
variableName: SD
units: yr14C BP
description: 14C years uncertainty
TSid: chron4
variableName: fractionModern
description: fraction of modern 14C activity
TSid: chron5
variableName: fractionModernUncertainty
description: fraction of modern 14C activity uncertainty
TSid: chron6
variableName: delta13C
units: permil
description: delta13C of material analyzed for 14C
TSid: chron7
variableName: delta13Cuncertainty
units: permil
description: delta13C uncertainty
TSid: chron8
variableName: thickness
units: cm
description: thickness of sample (along depth axis)
TSid: chron9
variableName: labID
description: laboratory ID from radiocarbon facility
TSid: chron10
variableName: materialDated
description: material analyzed
TSid: chron11
variableName: activity
units: Bq g-1
description: 210Pb, 239+240Pu or 137Cs activity
TSid: chron12
variableName: activityUncertainty
units: Bq g-1
description: 210Pb, 239+240Pu or 137Cs activity uncertainty
TSid: chron13
variableName: supportedActivity
description: Y if supported 210Pb activity, N if unsupported 210Pb activity
TSid: chron14
variableName: x210PbModel
description: model used to convert 210Pb activity to age (e.g., constant rate of supply)
TSid: chron15
variableName: age
units: yr BP
description: years before 1950 (calibrated age, or ages that dont need calibration)
TSid: chron16
variableName: SD
units: yr BP
description: uncertainty in age
TSid: chron17
variableName: reservoirAge14C
units: yr14C BP
description: 14C reservoir age
TSid: chron18
variableName: reservoirAge14CUncertainty
units: yr14C BP
description: 14C reservoir age uncertainty
TSid: chron19
variableName: useInAgeModel
description: was this date used in the age model?
root
pub
pub1
geo
PaleoData columns
year (yr AD) [1-1]
interpretation
1
2
3
4
5
depth (cm) [1-1]
interpretation
1
2
3
4
5
d18O (permil) [1-1]
interpretation
1
2
3
4
5
6
year (yr AD) [2-1]
interpretation
1
2
3
4
5
depth (cm) [2-1]
interpretation
1
2
3
4
5
d18O (permil) [2-1]
interpretation
1
2
3
4
5
6
year (yr AD) [3-1]
interpretation
1
2
3
4
5
depth (cm) [3-1]
interpretation
1
2
3
4
5
d18O (permil) [3-1]
interpretation
1
2
3
4
5
6
ChronData columns
depth (cm) [1-1]
age14C (yr14C BP) [1-1]
SD (yr14C BP) [1-1]
fractionModern () [1-1]
fractionModernUncertainty () [1-1]
delta13C (permil) [1-1]
delta13Cuncertainty (permil) [1-1]
thickness (cm) [1-1]
labID () [1-1]
materialDated () [1-1]
activity (Bq g-1) [1-1]
activityUncertainty (Bq g-1) [1-1]
supportedActivity () [1-1]
x210PbModel () [1-1]
age (yr BP) [1-1]
SD (yr BP) [1-1]
reservoirAge14C (yr14C BP) [1-1]
reservoirAge14CUncertainty (yr14C BP) [1-1]
useInAgeModel () [1-1]
depth (cm) [2-1]
age14C (yr14C BP) [2-1]
SD (yr14C BP) [2-1]
fractionModern () [2-1]
fractionModernUncertainty () [2-1]
delta13C (permil) [2-1]
delta13Cuncertainty (permil) [2-1]
thickness (cm) [2-1]
labID () [2-1]
materialDated () [2-1]
activity (Bq g-1) [2-1]
activityUncertainty (Bq g-1) [2-1]
supportedActivity () [2-1]
x210PbModel () [2-1]
age (yr BP) [2-1]
SD (yr BP) [2-1]
reservoirAge14C (yr14C BP) [2-1]
reservoirAge14CUncertainty (yr14C BP) [2-1]
useInAgeModel () [2-1]