Page 17 - Hydrogeology Principles and Practice

HYDA01 12/5/05 5:44 PM Page xvi

xvi Symbols and Abbreviations

Symbol Description Units

2 w average linear water velocity m s −1
WHO World Health Organization
WMO World Meteorological Organization
WMWL World Meteoric Water Line
W(u) well function
w width m
ZFP zero flux plane
z (hydraulics) elevation m
z (chemistry) electrical charge

Greek symbols

Symbol Description Units

2
−1
−1
a aquifer compressibility m N (or Pa )
a aquifer dispersivity m
a isotope fractionation factor
−1
2
−1
b water compressibility m N (or Pa )
g (chemistry) activity coefficient kg mol −1
g (hydraulics) specific weight N
d stable isotope notation
d− partial negative charge
d+ partial positive charge
q volumetric moisture content
l radionuclide decay constant s −1
m viscosity N s m −2
2 −1
m/r kinematic viscosity m s
r fluid density kg m −3
r b bulk mass density kg m −3
r s particle mass density kg m −3
−2
s e effective stress Pa (or N m )
−2
s T total stress Pa (or N m )
t total competing cation concentration meq (100 g) −1
S sum of
F fluid potential (= h) m
y fluid pressure m of water
y a air entry pressure m of water
X saturation index