Tracer experiments           package:SoPhy           R Documentation

_B_r_i_l_l_i_a_n_t _B_l_u_e _t_r_a_c_e_r _p_r_o_f_i_l_e

_D_e_s_c_r_i_p_t_i_o_n:

     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.

_U_s_a_g_e:

        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="/"))

_F_o_r_m_a_t:

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

_S_o_u_r_c_e:

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

_R_e_f_e_r_e_n_c_e_s:

     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._
           <URL:
           http://www.ito.umnw.ethz.ch/SoilPhys/Fliessmuster/projekt_fl
           ury.html>

        *  von Albertini, N., Laeser, H.P., Leuenberger, J. and H.
           Fluehler (1994-97) _Strukturerholung eines verdichteten
           Ackerbodens unter einer mehrjaehrigen Kunstwiese._ <URL:
           http://www.ito.umnw.ethz.ch/SoilPhys/Fliessmuster/projekt_vo
           nalbertini.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.

_E_x_a_m_p_l_e_s:

     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.")
     }

