Lecture 6 - Groundwater Hydrology Flashcards
What Does Hydrodynamic Equilibrium Depend on?
Discharge = Recharge
What Does Hydrodynamic Disequilibrium Depend on:
Discharge > Recharge
What is Groundwater Hydrology?
The movment and distribution of goundwater in soils and rocks of the Earth’s crust
What Does the Hydraulic Gradient Depend on?
Change in height / Change in length
Groundwater flows perpendicular to what?
Equipotential lines
What is Porosity?
Ability to hold water (in void spaces)
What is the Porosity Equation (P)
Volume in the pore / the total ground water volume
What is Permeability?
Ability to transmit water
What is Dispersivity?
The ability to mix groundwater
What is Hydraulic Conductivity (k):
Time to flush a sediment-filled column
What is the hydraulic condcuctivity Equation (k)?
k = GL / Aht
Discharge Equation (Q):
Q = ((permeability (k)) x Area x (Hydraulic Gradient (i))) / (Effective porosity (η))
What is the Velocity Equation:
((Permeability (k)) x (hydraulic gradient (i))) / (effective porosity (
η))
Types of Contamination (5):
- Agricultural
- Commercial
- Inductrial
- Municipal
- Specialized
What are LNAPL?
Light Non-Aqueous Phase Liquid (less dense than water)