Figure 4 Variation of dissolved Fe concentration with depth at a station in the North Pacific Ocean (oxic, but with a deep
oxygen minimum; data from Gordon et al., 1982) compared to the variation of dissolved Mn concentration with depth in the
Cariaco Trench (data from Jacobs et al. 1987).
xul=87
xlr=418
yul=95
ylr=508
xgr=xlr-xul
ygr=ylr-yul
if (e.x <= xlr && e.x >= xul && e.y <= ylr && e.y >= yul)
{
xg=0 +((e.x)-xul)/((xgr)/400)
document.myform.graphX.value=xg;
yg=1000 + ((e.y)-ylr)/((ygr)/1000)
document.myform.graphY.value=yg;
ph=-xg
hc=Math.pow(10,ph)
document.myform.graphHC.value=hc;
pe=yg*16.9
document.myform.graphPE.value=pe;
}
else {
document.myform.graphX.value="";
document.myform.graphY.value="";
document.myform.graphHC.value="";
document.myform.graphPE.value="";
}
}