leadR_CRS: Pb-210 CRS models

Description Usage Arguments Value Examples

Description

performs a constant rate of supply model for Lead-210 data.

Usage

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leadR_CRS(filename, unsupp = "estimate", coredate, area = "UWITEC",
  export = NULL)

Arguments

filename

the filename of the CSV datafile. It must have the following columns: "Depth", the center depth of the sample (in cm), Depth_Span, the width of the sample (in cm), Pb.210, the measured activity (in Bq/g), and "Pb.210_1s" the standard error of that measurement (in Bq/g), and "dry_mass", the dry mass of the sample (in grams).

unsupp

optional, if passed should be a numeric value to use as the baseline Pb-210 (in Bq/g), or "estimate" to automatically estimate it. If you don't pass either you must supply the data as a column in the input data.

coredate

the data of the top of the core (in years AD).

area

the diameter of the sediment core, or just "UWITEC" if you're using a UWITEC corer.

export

optional, the name to use for an output datafile.

Value

an object with the raw data, input, output, and accumulation rate

Examples

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leadR_CRS(filename=system.file("extdata", "exampledata.csv", package = "LeadR"), coredate=2014)

tombishop1/LeadR documentation built on May 31, 2019, 6:10 p.m.