Outline of introductory lecture, 9/8/04

I. Introduction of professor and TA

II. Definition(s) of hydrogeology and scope of practice

A. General definitions

1. Dr. Science's definition

2. S&Z page 7: "Hydrogeology is the study of the laws governing the movement of subterranean water, the mechanical, chemical and thermal interaction of this water with the porous solid, and the transport of energy, chemical constituents, and particulate matter by the flow."

B. Applications in Physical hydrogeology (focus of most of this course)

1. Exploration - identification of major water bearing units (aquifer delineation)

2. Development - design and construction of wells, requires understanding of well hydraulics

3. Inventory - quantification of the resource

(The USGS provides some interesting data on trends in ground-water use.)

4. Management - balancing conflicting demands, sustainability

C. Applications in Chemical hydrogeology (focus of approximately last third of this course)

1. Quality of drinking water

2. Chemical evolution along flow paths

3. Contaminant transport (subject of Geology 629)

D. Applications to the broader Earth sciences

1. Engineering challenges: subsidence, sinkholes, landslides, earthquakes

2. Mineral and energy resources: geothermal energy, hydrodynamics of hydrocarbon reservoirs, deposition of mineral deposits

3. Waste management: radioactive waste, landfills

III. Syllabus and course requirements (see handouts and web syllabus)

IV. Themes and tools

A. Use of models

1. Physical (e.g. sandbox)

2. Analog (heat flow, flow of electric current)

3. Mathematical (analytical solutions, graphical solutions, numerical solutions)

B. Mathematics as a concise means of approximating our understanding of the physical system

C. The conservation equation: INPUT-OUTPUT= CHANGE IN STORAGE

V. Application of the conservation equation to global and basin scale water budgets