Tulane Physical Geology Laboratory -INSTRUCTOR: E. GONZALEZ

Last Updated September 21, 2003

 

GROUNDWATER  -OUTLINE

LABORATORY TWELVE –GROUNDWATER PROCESSES, RESOURCES, AND RISKS.

Laboratory Manual in Physical Geology by The American Geological Institute (AGI) and the National Association of Geoscience Teachers (NAGT); Richard M. Busch, Editor; 6th Edition, 2003.

 

GROUNDWATER

WATER TABLE

 SATURATION ZONE

            WELLS

 

 

POROSITY

            PERMEABILITY AND FLOW

                        AQUIFERS (Unconfined and Confined)

                                    UNCONFINED AND CONFINED (discussed in the section “ Land subsidence  …)

                        AQUICLUDE

                                    CONFINING BEDS

           

 

KARST TOPOGRAPHY

                        DISSOLUTION OF LIMESTONE

            SINKHOLES

            SOLUTION VALLEYS

            SPRINGS

            DISAPPEARING STREAMS

            CAVES OR CAVERNS

 

LOCATION AND MOVEMENT OF GROUNDWATER

            DIRECTION OF FLOW SLOPE OF WATER TABLE

VELOCITY OR RATE (Permeability, porosity, hydraulic gradient)      Not in your manual

                        DARCY’S LAW             v= (k/p) h/l)                                         Not in your manual

 

LAND SUBSIDENCE HAZARDS CAUSED BY GROUNDWATER WITHDRAWAL

            EXAMPLES:  DOWNTOWN MEXICO CITY AND SANTA CLARA VALLEY, CALIFORNIA

 ARTESIAN WELL

                                    PRESSURE SURFACE

                                    RECHARGING AREA

 

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