L <- lipdR::readLipd("https://lipdverse.org/data/Yxo3tiC6Ct2TfZhHzUtO/1_0_8/AKIII.Terwilliger.2013.lpd")Report an issue (include datasetId and version)
In compilations: (only most recent versions are shown)
iso2k-1_0_0
archiveType: TerrestrialSediment
originalDataUrl: https://doi.org/10.25921/57j8-vs18
lipdVersion: 1.3
author: list(list(name = "Terwilliger, Valery J. , Eshetu, Zewdu , Disnar, Jean-Robert , Jacob, Ji¿½ri¿½my , Paul Adderley, W. , Huang, Yongsong , Alexandre, Marcelo , Fogel, Marilyn L."))
journal: Geochimica et Cosmochimica Acta
volume: 111
pages: -21
title: Environmental changes and the rise and fall of civilizations in the northern Horn of Africa: An approach combining ?D analyses of land-plant derived fatty acids with multiple proxies in soil
doi: 10.1016/j.gca.2012.10.040
latitude: 13.3322
longitude: 39.3646
elevation: 2171
siteName: Adi Kolan
TSid: MATa3745f3c77
variableName: age
units: yr AD
description: Year AD
TSid: MAT32498f268a
variableName: depth
units: cm
description: depth
TSid: SL13TEAK01B
variableName: d2H
units: permil
description: terrestrial biomarker
basis: dDn-C26 data unambiguously if perhaps qualitatively reflect changes in precipitation despite potentially confounding influences of vegetation type and other factors. "The dD values of the fatty acids from land-plant sources (n-C26, n-C28, n-C30) were significantly correlated to one another in each site"
interpDirection: decrease
scope: climate
variable: precipitation
direction: negative
variableGroup: P
variableGroupOriginal: precipitation amount
seasonality: Annual
variableDetail: amount@surface
seasonalityGeneral: Annual
basis: precipitation occurs in closest proximity to the bulk of global cloud formation and its dD values are most influenced by its amount. dD values de- crease as precipitation amount increases (Risi et al., 2008). Additional factors shape the dD values of fatty acids in land-plants as well but their consideration below suggests that our dDn-C26 sequences were unambiguously if qualita- tively reflecting changes in amount of precipitation.
direction: positive
inferredMaterial: soil water
mathematicalRelation: linear
rank: 1
scope: isotope
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupOriginal: precipitation amount
variableGroupDirection: positive
basis: Plant to plant differences in fractionations between dD values of n-alkyl compounds and their precipitation source may introduce the greatest error in interpreting rainfall amount.
inferredMaterial: soil water
scope: isotope
variableGroup: plant community composition
seasonality: Growing Season
inferredMaterial: soil water
scope: isotope
TSid: SL13TEAK01C2
variableName: d2H
units: permil
description: terrestrial biomarker
basis: dDn-C26 data unambiguously if perhaps qualitatively reflect changes in precipitation despite potentially confounding influences of vegetation type and other factors. "The dD values of the fatty acids from land-plant sources (n-C26, n-C28, n-C30) were significantly correlated to one another in each site"
interpDirection: decrease
scope: climate
variable: precipitation
direction: negative
variableGroup: P
variableGroupOriginal: precipitation amount
seasonality: Annual
variableDetail: amount@surface
seasonalityGeneral: Annual
basis: precipitation occurs in closest proximity to the bulk of global cloud formation and its dD values are most influenced by its amount. dD values de- crease as precipitation amount increases (Risi et al., 2008). Additional factors shape the dD values of fatty acids in land-plants as well but their consideration below suggests that our dDn-C26 sequences were unambiguously if qualita- tively reflecting changes in amount of precipitation.
direction: positive
inferredMaterial: soil water
mathematicalRelation: linear
rank: 1
scope: isotope
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupOriginal: precipitation amount
variableGroupDirection: positive
basis: Plant to plant differences in fractionations between dD values of n-alkyl compounds and their precipitation source may introduce the greatest error in interpreting rainfall amount.
inferredMaterial: soil water
scope: isotope
variableGroup: plant community composition
seasonality: Growing Season
inferredMaterial: soil water
scope: isotope
TSid: SL13TEAK01A
variableName: d2H
units: permil
description: terrestrial biomarker
basis: dDn-C26 data unambiguously if perhaps qualitatively reflect changes in precipitation despite potentially confounding influences of vegetation type and other factors. "The dD values of the fatty acids from land-plant sources (n-C26, n-C28, n-C30) were significantly correlated to one another in each site"
interpDirection: decrease
scope: climate
variable: precipitation
variableGroup: P
variableGroupOriginal: precipitation amount
direction: negative
seasonality: Annual
variableDetail: amount@surface
seasonalityGeneral: Annual
basis: precipitation occurs in closest proximity to the bulk of global cloud formation and its dD values are most influenced by its amount. dD values de- crease as precipitation amount increases (Risi et al., 2008). Additional factors shape the dD values of fatty acids in land-plants as well but their consideration below suggests that our dDn-C26 sequences were unambiguously if qualita- tively reflecting changes in amount of precipitation.
direction: positive
inferredMaterial: soil water
mathematicalRelation: linear
rank: 1
scope: isotope
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupOriginal: precipitation amount
variableGroupDirection: positive
basis: Plant to plant differences in fractionations between dD values of n-alkyl compounds and their precipitation source may introduce the greatest error in interpreting rainfall amount.
inferredMaterial: soil water
scope: isotope
variableGroup: plant community composition
seasonality: Growing Season
inferredMaterial: soil water
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
units: unitless
description: fraction of modern 14C activity
TSid: chron5
variableName: fractionModernUncertainty
units: unitless
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
units: unitless
description: laboratory ID from radiocarbon facility
TSid: chron10
variableName: materialDated
units: unitless
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
units: unitless
description: Y if supported 210Pb activity, N if unsupported 210Pb activity
TSid: chron14
variableName: x210PbModel
units: unitless
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
units: unitless
description: was this date used in the age model?
root
pub
pub1
geo
PaleoData columns
age (yr AD)
depth (cm)
d2H (permil)
interpretation
1
2
3
4
d2H (permil)
interpretation
1
2
3
4
d2H (permil)
interpretation
1
2
3
4
ChronData columns
depth (cm)
age14C (yr14C BP)
SD (yr14C BP)
fractionModern (unitless)
fractionModernUncertainty (unitless)
delta13C (permil)
delta13Cuncertainty (permil)
thickness (cm)
labID (unitless)
materialDated (unitless)
activity (Bq g-1)
activityUncertainty (Bq g-1)
supportedActivity (unitless)
x210PbModel (unitless)
age (yr BP)
SD (yr BP)
reservoirAge14C (yr14C BP)
reservoirAge14CUncertainty (yr14C BP)
useInAgeModel (unitless)