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L <- lipdR::readLipd("https://lipdverse.org/data/xpHL3Wn9kbEaJRpviF9x/1_0_6/CO04PFCH.lpd")
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iso2k-1_1_2
archiveType: Coral
originalDataUrl: https://www.ncdc.noaa.gov/paleo/study/1891
lipdVersion: 1.3
author: list(name = "Pfeiffer, M., W.-C. Dullo, and A. Eisenhauer")
doi: 10.1016/j.yqres.2004.02.009
author: list(name = "Pfeiffer, M.")
latitude: -5.43
longitude: 71.77
elevation: -1.8
siteName: Peros Banhos Atoll
TSid: MAT7a32fff5e7
variableName: year
units: yr AD
description: Year AD
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: MATd4f8849f7d
variableName: depth
units: cm
description: depth
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
rank: NA
scope: climate
TSid: CO04PFCH02A
variableName: d18O
units: permil
description: carbonate
basis: We find strong correlations between coral y18O, precipitation, and OLR, but also between coral y18O and SST
direction: decrease/increase
interpDirection: decrease/increase
scope: climate
variable: temperature
variableDetail: sea surface
variableGroup: temperature and salinity
scope: climate
scope: climate
basis: Core piM correlates more strongly with precipitation and OLR than COI-5 (Table 1). Note that years of high rainfall coincide with years of large negative coral y18O anomalies in the wet season (and high amplitudes of the annual cycle,
direction: positive
inferredMaterial: seawater
integrationTime: 2
integrationTimeBasis: A simple chronology based on these density bands in both corals temporally aligned anomalous 18O-depleted years precisely in the same years (e.g., 1972?1973, 1982? 1983). During these years, there were noted positive precipitation and/or SST anomalies. We then assigned February 15 to the most negative isotopic values. This is, on average, the wettest month. We then interpolated linearly between the anchor points to obtain bimonthly records of coral y18O.
integrationTimeUnits: month
mathematicalRelation: linear
rank: 1
scope: isotope
seasonality: subannual
variable: seawaterIsotope
variableGroup: EffectiveMoisture
variableGroupDirection: negative
variableGroupOriginal: d18O_seawater
coefficient: NA
fraction: NA
basis: However, over the entire time interval compared, maximum variations of mean summer SST are 1jC, which would account for approximately 0.20x in coral y18O (Juillet- Leclerc and Schmidt, 2001). Over the same period, mean summer coral y18O varies by as much as 0.7x (piM) and 0.4x (COI-5) (Fig. 4); i.e., the maximum SST contribution to the coral isotopic signal is 29% (piM) and 50% (COI-5).
direction: negative
inferredMaterial: seawater
integrationTime: 2
integrationTimeBasis: A simple chronology based on these density bands in both corals temporally aligned anomalous 18O-depleted years precisely in the same years (e.g., 1972?1973, 1982? 1983). During these years, there were noted positive precipitation and/or SST anomalies. We then assigned February 15 to the most negative isotopic values. This is, on average, the wettest month. We then interpolated linearly between the anchor points to obtain bimonthly records of coral y18O.
integrationTimeUnits: month
mathematicalRelation: linear
rank: 2
scope: isotope
variable: temperature
variableGroup: Temperature
variableGroupDirection: negative
variableGroupOriginal: T_water
coefficient: NA
fraction: NA
scope: isotope
coefficient: NA
fraction: NA
rank: NA
TSid: CO04PFCH01A
variableName: d18O
units: permil
description: carbonate
basis: We find strong correlations between coral y18O, precipitation, and OLR, but also between coral y18O and SST
interpDirection: decrease/increase
scope: climate
variable: temperature
variableDetail: sea surface
variableGroup: temperature and salinity
scope: climate
scope: climate
basis: However, over the entire time interval compared, maximum variations of mean summer SST are 1jC, which would account for approximately 0.20x in coral y18O (Juillet- Leclerc and Schmidt, 2001). Over the same period, mean summer coral y18O varies by as much as 0.7x (piM) and 0.4x (COI-5) (Fig. 4); i.e., the maximum SST contribution to the coral isotopic signal is 29% (piM) and 50% (COI-5)
direction: decrease
mathematicalRelation: linear
rank: 2
scope: isotope
coefficient: NA
fraction: NA
basis: Core GIM correlates more strongly with precipitation and OLR than COI-5 (Table 1). Note that years of high rainfall coincide with years of large negative coral y18O anomalies in the wet season (and high amplitudes of the annual cycle,
direction: increase
mathematicalRelation: linear
rank: 1
scope: isotope
coefficient: NA
fraction: NA
scope: isotope
coefficient: NA
fraction: NA
rank: NA
TSid: chron1
variableName: depthUTh
units: mm
description: midpoint depth of the subsample drilled for UTh age
TSid: chron20
variableName: depthtopPb
units: mm
description: Depth at the top of the subsample for 210Pb analysis
TSid: chron21
variableName: depthbottomPb
units: mm
description: Depth at the bottom of the subsample for 210Pb analysis
TSid: chron24
variableName: depthtopCs
units: mm
description: Depth at the top of the subsample for 137Cs analysis
TSid: chron25
variableName: depthbottomCs
units: mm
description: Depth at the bottom of the subsample for 137Cs analysis
TSid: chron2
variableName: SampleID
units: unitless
description: Sample ID for the UTh age measured
TSid: chron3
variableName: weight
units: mg
description: Weight of powder analyzed for UTh age
TSid: chron4
variableName: U238
units: ppb
description: 238U content of the subsample
TSid: chron5
variableName: U238_error
units: ppb
description: Analytical uncertainty of 238U
TSid: chron6
variableName: Th232
units: ppt
description: 232Th content of the subsample
TSid: chron7
variableName: Th232_error
units: ppt
description: Analytical uncertainty of 232Th
TSid: chron8
variableName: d234U
units: (ratio)
description: d234U measured in the subsample
TSid: chron9
variableName: d234U_error
units: unitless
description: Analytical uncertainty of d234U
TSid: chron10
variableName: Th230_U238activity
units: activity
description: [230Th/238U] activity measured in the subsample
TSid: chron11
variableName: U_Thactivity_error
units: unitless
description: Analytical uncertainty of 230Th238U activity
TSid: chron12
variableName: Th230_Th232ratio
units: ppm
description: [230Th/232Th] ratio in the subsample
TSid: chron13
variableName: Thratio_error
units: ppm
description: Analytical uncertainty of 230Th232Th ratio
TSid: chron14
variableName: AgeUncorrected
units: years ago
description: Uncorrected UTh age of the subsample
TSid: chron15
variableName: AgeUncorr_error
units: yrs
description: Analytical uncertainty of Uncorrected Age
TSid: chron16
variableName: age
units: years ago
description: Corrected UTh age of the subsample
TSid: chron17
variableName: AgeCorr_error
units: yrs
description: Uncertainty of Corrected Age (includes Th correction)
TSid: chron18
variableName: dU234initial
units: (ratio)
description: Calculated initial d234U in the subsample
TSid: chron19
variableName: dU234i_error
units: unitless
description: Analytical uncertainty of calculated d234U initial
TSid: chron22
variableName: Pb210excess
units: dpm/g
description: Lead210 excess measured in the subsample
TSid: chron23
variableName: Pb210_error
units: dpm/g
description: Analytical uncertainty of 210Pb excess
TSid: chron26
variableName: Cs137gamactivity
units: Bq/g
description: Cesium137 gactivity measured in the subsample
TSid: chron27
variableName: Cs137_error
units: Bq/g
description: Analytical uncertainty of 137Cs gactivity
TSid: chron28
variableName: bandAge
units: yr CE
description: Band counted age for the UTh sample
TSid: chron29
variableName: sampleType
units: unitless
description: Sample description. E.g., round plug, annual density band
root
pub
pub1
pub2
geo
PaleoData columns
year (yr AD)
interpretation
1
2
3
4
depth (cm)
interpretation
1
2
3
4
d18O (permil)
interpretation
1
2
3
4
5
6
d18O (permil)
interpretation
1
2
3
4
5
6
ChronData columns
depthUTh (mm)
depthtopPb (mm)
depthbottomPb (mm)
depthtopCs (mm)
depthbottomCs (mm)
SampleID (unitless)
weight (mg)
U238 (ppb)
U238_error (ppb)
Th232 (ppt)
Th232_error (ppt)
d234U ((ratio))
d234U_error (unitless)
Th230_U238activity (activity)
U_Thactivity_error (unitless)
Th230_Th232ratio (ppm)
Thratio_error (ppm)
AgeUncorrected (years ago)
AgeUncorr_error (yrs)
age (years ago)
AgeCorr_error (yrs)
dU234initial ((ratio))
dU234i_error (unitless)
Pb210excess (dpm/g)
Pb210_error (dpm/g)
Cs137gamactivity (Bq/g)
Cs137_error (Bq/g)
bandAge (yr CE)
sampleType (unitless)