L <- lipdR::readLipd("https://lipdverse.org/data/5E6SEDAAEpI4Llv1TdfK/1_0_11/ElJunco.Zhang.2014.lpd")Report an issue (include datasetId and version)
In compilations: (only most recent versions are shown)
HoloceneAbruptChange-0_11_0
archiveType: LakeSediment
originalDataUrl: https://doi.org/10.1016/j.epsl.2014.07.013
lipdVersion: 1.3
author: list(name = "Zhang, Zhaohui")
journal: Earth and Planetary Science Letters
volume: 404
pages: 420-434
title: El Nino evolution during the Holocene revealed by a biomarker rain gauge in the Galapagos Islands
doi: 10.1016/j.epsl.2014.07.013
latitude: -0.9
longitude: -89.4833
elevation: 670
siteName: El Junco Lake
TSid: ROLaMTjnvyS
variableName: age
units: yr BP
rank: NA
scope: climate
rank: NA
scope: climate
TSid: LS14ZHJU01A
variableName: d2H
units: permil
description: aquatic biomarker
basis: “El Junco Lake Atwood and Sachs (2014) showed that the lake water δD was primarily controlled by rainfall rates during El Niño episodes, as opposed to evaporation or water loss through seepage or overflow….changes in rainfall amount are imprinted in the isotopic composition of botryococcenes, with negative (posi- tive) δD values co-occurring with wetter (drier) periods.”
direction: negative
interpDirection: negative
scope: climate
seasonality: Annual
seasonalityGeneral: Annual
variable: precipitation
variableDetail: amount@surface
variableGroup: P
scope: climate
scope: climate
basis: It is expected that dD values of botryococcene will decline when precipitation rates increase, possibly providing a metric for the severity of extreme rainfall events that are associated with El Nino events. (All botryococcene dD values were highly correlated with water dD values (R2>0.99). And, Zhang and Sachs 2007, Organic Geochemistry), 38: 582-608.
direction: negative
inferredMaterial: lake water
mathematicalRelation: linear
rank: 1
scope: isotope
seasonality: Annual
seasonalityOriginal: Annual
variable: effectivePrecipitation
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: P_E
coefficient: NA
fraction: NA
direction: positive
inferredMaterial: lake water
rank: 2
scope: isotope
seasonalityOriginal: Annual
variable: precipitationIsotope
variableGroup: P_isotope
variableGroupDirection: positive
variableGroupOriginal: P_E
coefficient: NA
fraction: NA
scope: isotope
coefficient: NA
fraction: NA
rank: NA
TSid: LPD796b99d7-dup
variableName: uncertainty
units: permil
description: stdev of d2H of Botryococcene
scope: climate
scope: climate
scope: climate
rank: NA
scope: isotope
coefficient: NA
fraction: NA
rank: NA
scope: isotope
coefficient: NA
fraction: NA
scope: isotope
coefficient: NA
fraction: NA
rank: NA
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 BP)
interpretation
1
2
d2H (permil)
interpretation
1
2
3
4
5
6
uncertainty (permil)
interpretation
1
2
3
4
5
6
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)