| [latex]\alpha[/latex] |
= |
compressibility of the aquifer matrix (LT2M-1) , with the exception in the following row |
| [latex]\alpha[/latex] |
= |
in section 9.2.4, angle of refraction, also defined in the row above this row |
| [latex]b[/latex] |
= |
saturated thickness of the aquifer (L), with the exception in the following row |
| [latex]b[/latex] |
= |
in Sections 16 and 17, aperture (distance between walls of fracture) (L), also defined in the row above this row |
| Beta [latex]\beta[/latex] |
= |
compressibility of water (LT2M-1) |
| d |
= |
number of flow tubes, areas bounded by adjacent pairs of flow lines (:) |
| Delta [latex]\mathrm{\Delta}\sigma[/latex] |
= |
change in effective stress (MLT-2) |
| Delta [latex]\mathrm{\Delta}L/L[/latex] |
= |
change in length (thickness) over the total length (L) |
| [latex]\mathrm{\Delta}Storage[/latex] |
= |
change in storage over time in a system that balances input and output |
| [latex]dh/dl[/latex] |
= |
hydraulic gradient or change in hydraulic head (:) |
| [latex]\partial h/\partial x[/latex] |
= |
hydraulic gradient with respect to x (:) |
| e |
= |
void ratio (:) |
| [latex]f[/latex] |
= |
number of equipotential drops across a flow net (:) |
| [latex]g[/latex] |
= |
gravitational acceleration (LT– 2) |
| h |
= |
hydraulic head (L) |
| Eta [latex]H[/latex] |
= |
head of the backwater above the weir crest in ft |
| Eta [latex]H_{a}[/latex] |
= |
heat energy added (L) expressed as height of column of water |
| Eta [latex]{\ H}_{L}[/latex] |
= |
mechanical energy lost (L) expressed as height of column of water |
| Eta [latex]H_{E}[/latex] |
= |
heat energy extracted (L) expressed as height of column of water |
| i |
= |
hydraulic gradient (dh/dl) (:) |
| Iota I(t) |
= |
input to a system over time |
| k |
= |
intrinsic permeability (L2) |
| K |
= |
hydraulic conductivity (LT-1) |
| L |
= |
length of the weir crest in ft |
| Mu [latex]\mu_{fluid}[/latex] |
= |
viscosity of the fluid (ML-1T-1) |
| Mu μ |
= |
viscosity (ML-1T-1) |
| n |
= |
porosity ([latex]:[/latex]), with the exception in the following row |
| n |
= |
in section 13.5.2, Manning roughness coefficient (:), also defined in the row above |
| ω |
= |
gravimetric moisture content (:) |
| O(t) |
= |
output from a system over time |
| p |
= |
pressure (ML-1T-2) |
| [latex]P_{f}[/latex] |
= |
pore fluid pressure (ML-1T-2) |
| [latex]P_{h}[/latex] |
= |
hydrostatic pressure; hydrostatic pore fluid pressure (ML-1T-2) |
| Phi φ |
= |
porosity (:) |
| Phi [latex]\varphi_{eff}[/latex] |
= |
effective porosity (:) |
| Psi ψ |
= |
matric potential (or negative pressure head) (L) |
| Q |
= |
volumetric discharge (L3T-1) |
| q |
= |
specific discharge of groundwater flow (LT-1) |
| q’ |
= |
flow per unit width of aquifer (L2T-1) |
| r |
= |
radius (distance from pumping well) (L) |
| R |
= |
hydraulic radius (L) |
| Rho[latex]\ \rho_{bulk}[/latex] |
= |
bulk density (ML-3) |
| Rho[latex]\ \rho_{fluid}[/latex] |
= |
density of the fluid (ML-3) |
| Rho [latex]\ \rho_{f}[/latex] |
= |
fluid density (ML-3) |
| s |
= |
drawdown (L) |
| S |
= |
storativity, [latex]S = S_{s}b[/latex] (:) |
| Sd[latex]S_{d}[/latex] |
= |
degree of saturation (:) |
| Sigma [latex]\sigma[/latex] |
= |
total vertical stress; also called the normal stress (ML-1T-2) |
| Sigma σ’ |
= |
effective stress, or “grain to grain” stress in the rock (ML-1T-2) |
| Sigma [latex]\sigma_{v}[/latex] |
= |
vertical stress (ML-1T-2) |
| [latex]S_{r}[/latex] |
= |
specific retention (:) |
| [latex]S_{s}[/latex] |
= |
specific storage (L-1) |
| [latex]S_{y}[/latex] |
= |
specific yield (:) |
| θ |
= |
volumetric moisture content (L3L-3) |
| T |
= |
aquifer transmissivity, [latex]T\ = \ Kb[/latex] (L2T-1 ) |
| t |
= |
time (T) |
| u |
= |
excess fluid pressure |
| v |
= |
velocity (LT-1) |
| [latex]v_{avg}[/latex] |
= |
average linear velocity (LT-1) |
| [latex]V_{solids}[/latex] |
= |
volume of the solids (L3) |
| [latex]V_{total}[/latex] |
= |
total volume of the sample ((L3) |
| [latex]V_{voids}[/latex] |
= |
volume of the voids (L3) |
| w |
= |
rate of vertical leakage or recharge to the aquifer (LT-1) |
| x |
= |
some distance from [latex]h_{1}\ ([/latex]L) |
| x, y |
= |
Cartesian coordinates (L) |
| x, y, z |
= |
lengths in the principal directions in our coordinate systems |
| z |
= |
elevation head (L) , with the exceptions in the two following rows |
| z |
= |
in section 15.3, equation 97, thickness of the layer of material (L), also defined in the row above and below |
| z |
= |
in section 15.3, equations 99 and 100, thickness of the overlying layer of water (L), also defined in the two rows above |
