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L <- lipdR::readLipd("https://lipdverse.org/data/ibVsIVMBin5vvLzzHu5r/1_0_5/LS09SASP.lpd")
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In compilations: (only most recent versions are shown)
iso2k-1_1_1
archiveType: LakeSediment
originalDataUrl: https://www.ncdc.noaa.gov/paleo/study/29432
lipdVersion: 1.3
author: Sachs, Julian P. , Sachse, Dirk , Smittenberg, Rienk H. , Zhang, Zhaohui , Battisti, David S. , Golubic, Stjepko
journal: Nature Geoscience
volume: 2
pages: -6
title: Southward movement of the Pacific intertropical convergence zone AD 1400?1850
doi: 10.1038/NGEO554
latitude: 7.15
longitude: 134.3667
elevation: 4
siteName: Spooky Lake
TSid: MAT3e773ec33c
variableName: year
units: yr AD
description: Year AD
TSid: MAT851bf03235
variableName: depth
units: cm
description: depth
TSid: LS09SASP01A
variableName: d2H
units: permil
description: aquatic biomarker
basis: 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.
interpDirection: positive
scope: climate
seasonality: Annual
seasonalityOriginal: Annual
variable: precipitation
variableDetail: air@surface
variableDetailOriginal: air
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: Precipitation amount
scope: climate
scope: climate
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.
direction: negative
inferredMaterial: lake water
mathematicalRelation: linear
scope: isotope
seasonality: Annual
seasonalityOriginal: Annual
variable: precipitation
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: P_amount
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.
direction: depends on source, transport history, etc
inferredMaterial: lake water
scope: isotope
seasonality: Annual
seasonalityOriginal: Annual
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupDirection: positive
variableGroupOriginal: rainfall d2H
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.
direction: positive (more mixing, higher d2H in surface waters)
inferredMaterial: lake water
scope: isotope
seasonality: Annual
seasonalityOriginal: Annual
variable: lakeWaterIsotope
variableGroup: mixing with sea water which is in bottom of meromictic lake
TSid: LPD292174f8
variableName: d2H
units: permil
description: aquatic biomarker
scope: climate
scope: climate
scope: climate
direction: negative
mathematicalRelation: linear
scope: isotope
variable: hydrologicBalance
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: I_E
scope: isotope
scope: 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?
root
pub
pub1
geo
PaleoData columns
year (yr AD)
depth (cm)
d2H (permil)
interpretation
1
2
3
4
5
6
d2H (permil)
interpretation
1
2
3
4
5
6
ChronData columns
depth (cm)
age14C (yr14C BP)
SD (yr14C BP)
fractionModern ()
fractionModernUncertainty ()
delta13C (permil)
delta13Cuncertainty (permil)
thickness (cm)
labID ()
materialDated ()
activity (Bq g-1)
activityUncertainty (Bq g-1)
supportedActivity ()
x210PbModel ()
age (yr BP)
SD (yr BP)
reservoirAge14C (yr14C BP)
reservoirAge14CUncertainty (yr14C BP)
useInAgeModel ()