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L <- lipdR::readLipd("https://lipdverse.org/data/4gKGCCfsqyf8TmVGIulj/1_0_6/LS13STEL.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/13195
lipdVersion: 1.3
author: Stansell, N. D. , Steinman, B. A. , Abbott, M. B. , Rubinov, M. , Roman-Lacayo, M.
journal: Geology
volume: 41
pages: -3
title: Lacustrine stable isotope record of precipitation changes in Nicaragua during the Little Ice Age and Medieval Climate Anomaly
doi: 10.1130/G33736.1
latitude: 11.9
longitude: -85.9167
elevation: 44
siteName: Lago El Grancho
TSid: MAT12f2b34800
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: MAT7d3f8a3175
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: LS13STEL
variableName: d18O
units: permil
description: carbonate
basis: More specifi cally, the ostracod-based oxygen isotope record from El Gancho, Nicaragua, indicates that wetter conditions prevailed from as early as ca. A.D. 600 until the end of the MCA, ca. A.D. 1250. An abrupt shift toward arid conditions occurred during the ~150 yr interval between the MCA and the LIA, and was followed by a generally drier climate that has persisted until present
direction: negative
interpDirection: increase
scope: climate
variable: effectivePrecipitation
variableGroup: E/P
scope: climate
scope: climate
basis: Oxygen isotope values of El Gancho surface water samples are enriched by ~8? relative to local meteoric water (Fig. 3), indicating substantial water loss through both evaporation and nonfractionating outfl ow pathways (i.e., overfl ow and outseepage through the lake bed), and a resulting lake water isotopic sensitivity to changes in hydrologic balance. isotopic and hydrologic modeling supports these assertions, indicating that precipitation [amount] is the principle control on El Gancho lake water !18O values. For example, in response to modeled precipitation changes of i¿½50%, El Gancho exhibited water and ostracod !18O increases of >1.5? and decreases of >1.0?, respectively; largely as a result of hydrologic control of the proportions of water lost through evaporation and overfl ow (Table DR5).
direction: negative
inferredMaterial: lake water
integrationTimeUnits: Years
rank: 1
scope: isotope
variable: effectivePrecipitation
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: P_E
inferredMaterial: lake water
integrationTimeUnits: Years
rank: 2
scope: isotope
variable: temperature
variableGroup: Temperature
variableGroupDirection: negative
variableGroupOriginal: T_water
inferredMaterial: lake water
integrationTimeUnits: Years
rank: 3
scope: isotope
variable: relativeHumidity
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: RH
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
4
5
depth (cm)
interpretation
1
2
3
4
5
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 ()