14 Notations
|
‰ |
parts per thousand (permil) |
|
1,2,3,… |
subscript for input streams |
|
a,b,c |
fitting constants (K2, K, dimensionless, respectively) |
|
α |
equilibrium fractionation factor for the reaction at a given temperature (dimensionless) |
|
X,Y |
fractionation factor for transition from X to Y (dimensionless) |
|
c |
y-intercept (dimensions of y-axis values) |
|
d |
deuterium excess (D-excess) |
|
δ |
deviation of stable isotope composition from a standard |
|
ε |
enrichment factor |
|
f |
fraction (1 to 0) of water that remains (dimensionless) |
|
f |
subscript for output stream |
|
g |
subscript indicating groundwater |
|
m |
gradient, i.e., slope of the line (dimensions of y-axis values over dimensions of x-axis values) |
|
mRMW |
gradient, i.e., slope of the Reduced Major Axis Regression (dimensions of y-axis values over dimensions of x-axis values) |
|
p |
subscript indicating precipitation |
|
Q |
flow rate (MT–1) |
|
R |
isotope ratio such as 2H/1H (dimensionless) |
|
rfinal |
isotope composition of the pool of water with fraction f remaining (dimensionless) |
|
rinitial |
original isotope composition of the pool (dimensionless) |
|
s |
subscript indicating resultant total stream flow |
|
SPxy |
sum of product of deviations from the mean of x and deviations from mean of y (dimensions are product of x and y dimensions) |
|
SSx |
sum of the squared deviations from the mean of x (squared dimensions of the x variable) |
|
SSy |
sum of the squared deviations from the mean of y (squared dimensions of the y variable) |
|
T |
temperature (K) |
|
X |
subscript indicating reactant compound or state |
|
x, y |
regression variables |
|
Y |
subscript indicating product compound or state |