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rplum (version 0.1.4)

Bayesian Age-Depth Modelling of '210Pb'-Dated Cores

Description

An approach to age-depth modelling that uses Bayesian statistics to reconstruct accumulation histories for '210Pb'-dated deposits using prior information. It can combine '210Pb', radiocarbon, and other dates in the chronologies. See Aquino 'et' 'al.' (2018) . Note that parts of the code underlying 'rplum' are derived from the 'rbacon' package by the same authors. Subsequent versions of 'rplum' and 'rbacon' are planned to reduce duplication, with 'rplum' importing 'rbacon' instead.

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Version

Install

install.packages('rplum')

Monthly Downloads

327

Version

0.1.4

License

GPL (>= 2)

Maintainer

Maarten Blaauw

Last Published

May 4th, 2020

Functions in rplum (0.1.4)

agemodel.it

Extract one age-model iteration
add.dates

Add dates to age-depth plots
accrate.depth

Obtain estimated accumulation rates as for any depth of a core.
accrate.age.ghost

Plot a core's accumulation rates against calendar time.
accrate.depth.ghost

Plot modelled accumulation rates against the depths of a core.
draw.pbmeasured

Plot the 210Pb data
draw.pbmodelled

Plot the 210Pb data
clam2bacon

Translate clam .csv files to Bacon .csv files.
age.pMC

Calculate pMC values from C14 ages
copyCalibrationCurve

Copy a calibration curve.
agedepth

Plot an age-depth model
scissors.plum

Remove the first n iterations.
flux.age.ghost

Plot flux rates for proxies.
thinner

Thin iterations.
bacon2clam

Translate Bacon .csv files to clam .csv files.
proxy.ghost

Proxies analysed along the depths of a core can be plotted as 'proxy-ghost' graphs against calendar time while taking into account chronological uncertainties. Here darker grey indicates more likely calendar ages for specific proxy values.
pMC.age

Calculate C14 ages from pMC values.
rplum

rplum
calib.plot

Plot the dates
AgesOfEvents

Event probabilities against calendar age
calib.plumbacon.plot

Plot the dates
scissors

Remove the first n iterations.
mix.curves

Build a custom-made, mixed calibration curve.
Bacon

Main age-depth modelling function
Bacon.cleanup

Remove files made to produce the current core's age-depth model.
accrate.age

Obtain estimated accumulation rates for any age of a core.
Bacon.Age.d

Output all ages for a single depth.
Plum_runs

List the folders present in the current core directory.
A.modelled

Calculate modelled 210Pb
Baconvergence

Test to identify poorly mixed MCMC runs.
Bacon.hist

Calculate age distributions of depths.
Plum

Main 210Pb age-depth modelling function