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L <- lipdR::readLipd("https://lipdverse.org/data/d5iww7TYNjOQwD48FkWa/1_0_6/LS11NECA.lpd")Report an issue (include datasetId and version)
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iso2k-1_1_1
archiveType: LakeSediment
originalDataUrl: https://www.ncdc.noaa.gov/paleo/study/10310
lipdVersion: 1.3
author: Nelson, D. B. , Abbott, M. B. , Steinman, B. , Polissar, P. J. , Stansell, N. D. , Ortiz, J. D. , Rosenmeier, M. F. , Finney, B. P. , Riedel, J.
journal: Proceedings of the National Academy of Sciences
volume: 108
pages: -5
title: Drought variability in the Pacific Northwest from a 6,000-yr lake sediment record
doi: 10.1073/pnas.1009194108
latitude: 48.5
longitude: -119.6
elevation: 594
siteName: Castor
TSid: MATfceac3c4b6
variableName: year
units: yr AD
description: Year AD
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: MAT0227632aa3
variableName: depth
units: cm
description: depth
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: LS11NECA
variableName: d18O
units: permil
description: carbonate
basis: Our results indicate that during the Medieval Climate Anomaly (MCA) (900-1300 AD) the Pacific Northwest experienced exceptional wetness in winter and that during the Little Ice Age (LIA) (1450-1850 AD) conditions were drier, contrasting with hydroclimatic anomalies in the desert Southwest and consistent with climate dynamics related to the El Nii¿½o Southern Oscillation (ENSO) and the Pacific Decadal Oscillation (PDO).
direction: decrease
interpDirection: decrease
scope: climate
seasonality: Winter
variable: precipitation
variableDetail: ENSO/PDO
variableGroup: P
variableOriginal: precipitation
scope: climate
scope: climate
basis: Castor Lake water and sediment oxygen isotope values are primarily influenced by catchment water balance variations resulting from precipitation-evaporation forcing; To establish a meteoric water baseline for the Castor Lake record, we mean centered the independently dated (SI Appendix, Table S1) Lime Lake ?18O data and subtracted these variations from the mean centered Castor Lake ?18O values (Figs. 2 and 3) thereby isolating the isotopic influence of hydrologic forcing on the Castor lake-catchment system (8). The resulting ??18O record represents the cumulative isotopic effects of evaporation
direction: negative
inferredMaterial: lake water
rank: 1
scope: isotope
seasonality: Dec-Feb
variable: effectivePrecipitation
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: P_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)
interpretation
1
2
3
depth (cm)
interpretation
1
2
3
d18O (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 ()