Tracer experiments {SoPhy} | R Documentation

## Brilliant Blue tracer profile

### Description

Digitised pictures of profiles that have been excavated after Brilliant Blue tracer experiments. The picture were taken by the soil physics group at ETH Zurich, see Source and References below.

### Usage

       path <- paste(system.file(package='SoPhy'), 'tracer', sep="/")
       F04  <- read.picture(paste(path, "F04", sep="/"))
       F04g <- read.picture(paste(path, "F04.G", sep="/"))
       F06  <- read.picture(paste(path, "F06", sep="/"))
       F06g <- read.picture(paste(path, "F06.G", sep="/"))
       K06  <- read.picture(paste(path, "K06", sep="/"))
       K06g <- read.picture(paste(path, "K06.G", sep="/"))

### Format

3-dimensional array, where the last dimension codes red, green, blue, and alpha.

### Source

The data were collected by the soil physics group at ETH Zurich, http://www.ito.umnw.ethz.ch/SoilPhys/Fliessmuster/

### References

Data

- Flury, M., Leuenberger, J., Studer, B. and Jury, W.A. and Fluehler, H. (1992-94) Prafeerentielle Fliesswege in Ackerboeden - ein screening-Test unter Feldbedingungen. http://www.ito.umnw.ethz.ch/SoilPhys/Fliessmuster/projekt_flury.html
- von Albertini, N., Laeser, H.P., Leuenberger, J. and H. Fluehler (1994-97) Strukturerholung eines verdichteten Ackerbodens unter einer mehrjaehrigen Kunstwiese. http://www.ito.umnw.ethz.ch/SoilPhys/Fliessmuster/projekt_vonalbertini.html

Papers

- von Albertini, N., Leuenberger, J., Laeser, H.P. and H. Fluehler (1995) Regeneration der Bodenstruktur eines verdichteten Ackerbodens unter Kunstwiese Bodenkundliche Gesellschaft der Schweiz, Dokument 7, 10-16
- Flury, M. and Fluehler, H. (1994) Brilliant Blue FCF as a Dye Tracer for Solute Transport Studies - A Toxicological Overview J. Environm. Quality 23, 1108-1112
- Flury, M. and Fluehler, H. (1995) Tracer characteristics of Brilliant Blue FCF. Soil Sci. Soc. Am. J. 59, 22-27.
- Flury, M., Fluehler, H., Jury, W.A. and Leuenberger, J. (1994) Susceptibility of Soils to Preferential Flow of Water: A Field Study. Water Resour. Res. 30, 1945-1954
- German-Heins, J. and Flury, M. (2000) Sorption of Brilliant Blue FCF in soils as affected by pH and ionic strength. Geoderma 97, 87-101.
- Schlather, M. and Huwe, B. (2005) A risk index for characterising flow pattern in soils using dye tracer distributions. J. Contam. Hydrol. 79, to appear.

### Examples

    path <- paste(system.file(package='SoPhy'), 'tracer', sep="/")
    for (nm in c("F04", "F06", "K06")) {
       cat("\n", nm, ":\nOriginal picture. ", sep="")
       p <- read.picture(paste(path, "/", nm,  sep=""))
       plotRGB(p)
       readline("Press return.")
       p <- read.picture(paste(path, "/", nm, ".G", sep=""))
       plotRGB(p)
       readline("Picture after first preparation. Press return.")
    }

[Package SoPhy version 1.0.28 Index]