Groundwater Cycle

edX
Training overview
Professional Course
Virtual Classroom
5 weeks
From 750 USD

Start dates
Online
750 USD
Inquire for more information

Course description

Groundwater Cycle

Groundwater is the water beneath the ground surface. It is a vast freshwater reservoir often overlooked because invisible, yet 1000 times greater than all lakes and rivers. The Earth is blue for its oceans, but it is green for the blankets of freshwater under our feet. Half of the world’s population relies on groundwater for drinking and almost half of the irrigated land now depends on groundwater, a ten-fold increase in the past 50 years.

This course explores the water cycle from an underground perspective. We start with the description of groundwater as a resource: How much is there? Where is it? How do we use it? How much groundwater do plants and trees use every year? How much water do aquifers lose during droughts? How much do they gain during rain events or in a typical year?

In the second objective of this course, we describe underground waters and the properties and classification of aquifers. What is the difference between a confined and unconfined aquifer? What is porosity and does it influence groundwater resources? We then explain and apply Darcy’s law. Darcy is a 19th century hydraulics engineer who famously worked on bringing clean fresh water to the public fountains of Dijon, France. His law describes flow in porous media and is the cornerstone of subsurface hydrology. We will review his experiments and show how he arrived at his law empirically. We even will show in a lab video how to calculate the hydraulic properties of porous media following Darcy’s steps. After this empirical overview, we will demonstrate how we can derive the same law from first principles using Newton’s force balances.

In our third objective, we will build up from Darcy’s law to derive the other principles of groundwater motion. What are the differences between confined and unconfined flows? What happens when it rains and the aquifers recharge? What happens in soils with inhomogeneous properties? What is a water divide? Finally, we will introduce modeling principles to translate these foundations into real-life engineering. How can we solve the equations of motion in excel using finite difference? How can we design tile drains to lower the water table in a cornfield?

Want to find out more?

Who should attend?

Prerequisites:

None

Training content

Week 1: The Underground Water Cycle

We start with the description of groundwater as a resource: How much is there? Where is it? How do we use it?

  • Importance of Groundwater
  • Groundwater Use
  • Water Cycle, Groundwater Availability
  • Global Water Cycle
  • Water Distribution
  • Watershed Water Balance
  • Groundwater Recharge from Hydrographs Analysis
  • Recession Curve Displacement Method
  • Seasonal Recession Method

Week 2: Aquifers

We describe underground waters and the properties and classification of aquifers. What is the difference between a confined and an unconfined aquifer? What is porosity and does it influence groundwater resources?

  • Underground Water and Aquifer Types
  • Lab Water in a Sand Box
  • Underground Water and Aquifers
  • WaterTtable, Piezometric Head and Potentiometric Surface Maps
  • Review of Piezometric Head
  • Potentiometric Surface Maps
  • Porosity and Underground Matrix
  • What is Porosity?
  • Measuring Porosity
  • Specific Yield, Specific Retention, Specific Storage, Storativity
  • Specific Yield, Specific Retention
  • Specific Storage and Storativity

Week 3: Darcy’s Law

We explain and apply Darcy’s law. This law describes flow in porous media and is the cornerstone of subsurface hydrology.

  • Darcy the Engineer
  • Darcy’s Law: An Empirical Law
  • Permeameters
  • Darcy Data and Hydraulic Conductivity
  • Darcy’s Law: A Fundamental Law
  • Physics Basics: Energy, Forces and Pressures = Einstein, Newton and
  • Stokes and Poiseuille Law

Week 4: Groundwater Flow

We build up from Darcy’s law to derive the other principles of groundwater motion. What are the differences between confined and unconfined flows? What happens when it rains and aquifers recharge?

  • Principles of Groundwater Flow
  • Confined Flow
  • Dupuit: Unconfined Flow
  • Recharge and Divide
  • Boussinesq Equation
  • Leaky Confined

Week 5: Modeling and Applications

We introduce modeling principles to translate mathematical models into real-life engineering. How can we solve the equations of motion in excel? How can we design tile drains to lower the water table in a cornfield?

  • K Charge
  • Finite Difference Principles
  • Finite Difference Application

Course delivery details

This course is offered through Purdue University, a partner institute of EdX.

3-5 hours per week

Costs

  • Verified Track -$750
  • Audit Track - Free

Certification / Credits

What you'll learn

  • Describe the global and local water balance and quantify groundwater recharge from hydrographs

    • Explain in your own words the terms: groundwater, freshwater, water allocation, drought, water demand
    • Provide estimates of human water usage, global water reservoirs, water during historic droughts
    • Sketch the water cycle
    • Provide a water balance for a wathershed
    • Apply the concept of water balance to simple situations
    • Use the displacement and seasonal recession method to calculate groundwater recharge.
  • Identify underground waters, describe the properties of aquifers and recall their classification
    • Define: zone of saturation, zone of aeration/unsaturated zone, water table, vadose zone, capillary fringe
    • Define: aquifer, aquitard/aquifuge, pore space, phreatic surface, root zone, confined/unconfined aquifer, piezometric surface, artesian aquifer, perched aquifers
    • Define porosity, derive its value in packed beds, Understand Grain size distribution and porosity, Understand the porosity of rock formations
    • Define storativity, elastic storage coefficient, specific yield, storage coefficient, specific retention, specific storage.
    • Draw piezometric maps from piezometer data
    • Find recharge and discharge zones from piezometric data
  • Explain and apply Darcy's law
    • Provide and explain Newton's second law, Newton's second law applied to fluids and Stokes Equation.
    • Explain the difference between Darcy flux and water velocity.
    • Derive Darcy's law from first principles: Navier-Stokes to Stokes to Poiseuille to Darcy
    • Provide physical explanations of the hydraulic conductivity
  • Derive the groundwater flow equations, apply their solutions to solve practical problems
    • Provide and explain Dupuit's equation.
    • Solve problems related to unconfined and confined aquifers.
    • Derive the Boussinesq equation.
    • Define transmissivity
    • Write the continuity equation for a leaky aquifer and provide an explanation for each parameter and variable as well as their units
    • Define transmissivity

About edX

edX

edX For Business helps leading companies upskill their labor forces by making the world’s greatest educational resources available to learners across a wide variety of in-demand fields. edX For Business delivers high-quality corporate eLearning to train and engage your employees...


Read more and show all training delivered by this supplier

Contact this provider

Fill out your details to find out more about Groundwater Cycle.

  Contact the provider

  Get more information

  Register your interest

Country *

Contact info

edX

141 Portland Street
02139 Cambridge Massachusetts

 Show phone number
edx.business

Request Information

Have a question about this course? Fill out this form and the provider will get in touch with you shortly

View again
Supplier Directory
Join our Supplier Directory to:
- Gain Traffic
- Get Noticed
- Showcase Your Services
- Free Listing Available