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Course Hazards and risk assessment GEO4-4425, Utrecht University, 20 March 2020

Topic: Vulnerability of groundwater systems to flooding events

Lectures Density dependent groundwater flow, UNESCO-IHE, Delft, 18-19-22-23 June 2015

Download: Lecture notes Density Dependent Groundwater Flow

Download:   Powerpoint presentation: pdf format  
Download:   Henry's problemEffect saline flooding event on groundwater: pdf document  
Download:   Henry's problemsaltfresh_flooding: PMWIN files, Exercise 1
Download:  Elder's problem: pdf document 
Download: Elder's problem: PMWIN files 
Download: Vertical interface: pdf document 
Download: Vertical interface: PMWIN files 
Download: Freshwater lens: pdf document 
Download: Freshwater lens: PMWIN files 

Download:   word documents Henry, Elder, Vertical Interface, Freshwater Lens  

Download:   animation Elder

saltfresh_flooding: PMWIN files, Exercise 5

Lecture Notes Density Dependent Groundwater Flow: Salt water intrusion in coastal aquifers

Auteur: Gualbert Oude Essink 
Dictaat: Density Dependent Groundwater Flow

1 Introduction
2 Characteristics of a density dependen groundwater system
3 Freshwater head
4 The concept of a fresh-saline interface
5 Control of salt water intrusion
6 Numerical modelling
7 Salt water intrusion in the Netherlands
8 Heat transport in porous media: introduction

Lecture Notes Groundwater Modelling

Auteur: Gualbert Oude Essink 
Dictaat: Groundwater Modelling 
PART I Modelling Protocol 
1 Introduction 
2 Classification of mathematical models 
3 Methodology of modelling 
4 Data gathering 
PART II Groundwater Modelling 
5 Introduction 
6 Mathematical description of hydrogeologic processes 
7 Solution techniques 
8 Numerical aspects of groundwater models 
9 Some selected groundwater codes

Homage Prof. Custodio:

article: Salinisation of groundwater resources in the Dutch Deltaic Area: modelling, monitoring, Climate Change and Solutions

Animations: examples of salinisation processes

Henry's profile with sea level rise
3D zoet-zout verdeling ondergrond NL
Fresh water injection to combat salinisation
3D zoet-zout verdeling ondergrond Texel
Regional groundwater flow, partly captured by a sandy boil  
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Henry's profile with sea level rise
3D zoet-zout verdeling ondergrond NL
Fresh water injection to combat  salinisation
3D zoet-zout verdeling ondergrond Texel
Regional groundwater flow, partly captured by a sandy boil


Physical barrier in the coastal zone
Dutch profile: extraction, upconing and low inland levels
Profile over 3D model: effect sea level rise on salinisation
Movement of the island De Griend (NL): creation of a freshwater lens
Evolution of a freshwater lens
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Physical barrier in the coastal zone
Dutch profile extraction, upconing and low inland levels
Profile over 3D model: effect sea level rise on salinisation
Movement of the island De Griend (NL): creation of a freshwater lens
Evolution of a freshwater lens


Upconing saline groundwater under a low-lying area
Ontwikkeling van een zoetwaterlens
3D salinity groundwater distribution of the Nile Delta, Egypt
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Upconing saline groundwater under a low-lying area
Ontwikkeling van een zoetwaterlens
Development lens
Nile delta