Metal concentrations in lake sediments

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Question

What are metal concentrations in lake sediments? The focus is on Finland.

Answer

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Valitse näytettävä metalli: Co Cr Cu Fe Mn Ni Pb S V Zn + Show code- Hide code library(OpasnetBaseUtils) library(xtable) library(ggplot2) data <- tidy(op_baseGetData("opasnet_base", "Op_en5462")) out <- data[data$Observation %in% metalli, ] colnames(out) <- c("DateTime", "TagName", "Value") out$Value <- as.numeric(out$Value) out$DateTime <- as.numeric(out$DateTime) cat(paste("Metalli: ", metalli, "\n", sep="")) plot(out$Value)

Northing: Easting: Valitse ympyrän säde(km; järvet ko. alueelta huomioidaan): Valitse metallit: Co Cr Cu Fe Mn Ni Pb S V Zn + Show code- Hide code library(OpasnetBaseUtils) library(xtable) library(ggplot2) library(reshape) data <- (op_baseGetData("opasnet_base", "Op_en5462")) data <- tidy(data) data$Result <- as.numeric(data$Result) # This replaces all as.numeric rows below. data <- reshape(data, timevar = "Observation", idvar = "ID", direction = "wide") colnames(data) <- gsub("Result.", "", colnames(data)) data$distance <- sqrt((as.numeric(data$Easting) - easting)^2 + (as.numeric(data$Northing) - northing)^2) data <- melt(data, measure.vars = c("Co", "Cr", "Cu", "Fe", "Mn", "Ni", "Pb", "S", "V", "Zn")) out <- data out$distance <- data$distance <= säde*1000 out <- as.data.frame(as.table(tapply(out$value, out[c("variable", "distance")], mean))) colnames(out) <- gsub("variable", "metalli", colnames(out)) colnames(out) <- gsub("Freq", "pitoisuus", colnames(out)) cat("Metallipitoisuuden keskiarvo ", säde, " km säteellä pisteestä ", easting, "E, ", northing, " N.\n") print(xtable(out[out$distance == TRUE, ]), type = 'html') cat("Pitoisuudet metallille", metalli, ".\n") concentration <- data[data$distance <= säde*1000 & data$variable == metalli, "value"] plot(concentration) # simple plot about concentrations. qplot(Easting, Northing, data = data[data$variable == metalli, ], size = value) # Concentrations on a "map".

Rationale

Based on data from GTK, Finland.

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Metal concentrations in lake sediments. Opasnet . [1]. Accessed 02 Jun 2024.